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Adamczewski-Musch J, Arnold O, Behnke C, Belounnas A, Belyaev A, Berger-Chen JC, Blanco A, Blume C, Böhmer M, Bordalo P, Chernenko S, Chlad L, Ciepal I, Deveaux C, Dreyer J, Epple E, Fabbietti L, Fateev O, Filip P, Fonte P, Franco C, Friese J, Fröhlich I, Galatyuk T, Garzón JA, Gernhäuser R, Golosov O, Golubeva M, Greifenhagen R, Guber F, Gumberidze M, Harabasz S, Heinz T, Hennino T, Hlavac S, Höhne C, Holzmann R, Ierusalimov A, Ivashkin A, Kämpfer B, Karavicheva T, Kardan B, Koenig I, Koenig W, Kohls M, Kolb BW, Korcyl G, Kornakov G, Kornas F, Kotte R, Kugler A, Kunz T, Kurepin A, Kurilkin A, Kurilkin P, Ladygin V, Lalik R, Lapidus K, Lebedev A, Lopes L, Lorenz M, Mahmoud T, Maier L, Malige A, Mamaev M, Mangiarotti A, Markert J, Matulewicz T, Maurus S, Metag V, Michel J, Mihaylov DM, Morozov S, Müntz C, Münzer R, Naumann L, Nowakowski K, Parpottas Y, Pechenov V, Pechenova O, Petukhov O, Piasecki K, Pietraszko J, Przygoda W, Pysz K, Ramos S, Ramstein B, Rathod N, Reshetin A, Rodriguez-Ramos P, Rosier P, Rost A, Rustamov A, Sadovsky A, Salabura P, Scheib T, Schuldes H, Schwab E, Scozzi F, Seck F, Sellheim P, Selyuzhenkov I, Siebenson J, Silva L, Singh U, Smyrski J, Sobolev YG, Spataro S, Spies S, Ströbele H, Stroth J, Sturm C, Svoboda O, Szala M, Tlusty P, Traxler M, Tsertos H, Usenko E, Wagner V, Wendisch C, Wiebusch MG, Wirth J, Wójcik D, Zanevsky Y, Zumbruch P. Directed, Elliptic, and Higher Order Flow Harmonics of Protons, Deuterons, and Tritons in Au+Au Collisions at sqrt[s_{NN}]=2.4 GeV. Phys Rev Lett 2020; 125:262301. [PMID: 33449792 DOI: 10.1103/physrevlett.125.262301] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 10/07/2020] [Accepted: 11/29/2020] [Indexed: 06/12/2023]
Abstract
Flow coefficients v_{n} of the orders n=1-6 are measured with the High-Acceptance DiElectron Spectrometer (HADES) at GSI for protons, deuterons, and tritons as a function of centrality, transverse momentum, and rapidity in Au+Au collisions at sqrt[s_{NN}]=2.4 GeV. Combining the information from the flow coefficients of all orders allows us to construct for the first time, at collision energies of a few GeV, a multidifferential picture of the angular emission pattern of these particles. It reflects the complicated interplay between the effect of the central fireball pressure on the emission of particles and their subsequent interaction with spectator matter. The high precision information on higher order flow coefficients is a major step forward in constraining the equation of state of dense baryonic matter.
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Affiliation(s)
- J Adamczewski-Musch
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - O Arnold
- Excellence Cluster "Origin and Structure of the Universe," 85748 Garching, Germany
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
| | - C Behnke
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
| | - A Belounnas
- Laboratoire de Physique des 2 infinis Irène Joliot-Curie, Université Paris-Saclay, CNRS-IN2P3, F-91405 Orsay, France
| | - A Belyaev
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
| | - J C Berger-Chen
- Excellence Cluster "Origin and Structure of the Universe," 85748 Garching, Germany
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
| | - A Blanco
- LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal
| | - C Blume
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
| | - M Böhmer
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
| | - P Bordalo
- LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal
| | - S Chernenko
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
| | - L Chlad
- Nuclear Physics Institute, The Czech Academy of Sciences, 25068 Rez, Czech Republic
| | - I Ciepal
- Institute of Nuclear Physics, Polish Academy of Sciences, 31342 Kraków, Poland
| | - C Deveaux
- II.Physikalisches Institut, Justus Liebig Universität Giessen, 35392 Giessen, Germany
| | - J Dreyer
- Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany
| | - E Epple
- Excellence Cluster "Origin and Structure of the Universe," 85748 Garching, Germany
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
| | - L Fabbietti
- Excellence Cluster "Origin and Structure of the Universe," 85748 Garching, Germany
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
| | - O Fateev
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
| | - P Filip
- Institute of Physics, Slovak Academy of Sciences, 84228 Bratislava, Slovakia
| | - P Fonte
- LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal
| | - C Franco
- LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal
| | - J Friese
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
| | - I Fröhlich
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
| | - T Galatyuk
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - J A Garzón
- LabCAF. F. Física, Universidad de Santiago de Compostela, 15706 Santiago de Compostela, Spain
| | - R Gernhäuser
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
| | - O Golosov
- National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 115409 Moscow, Russia
| | - M Golubeva
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
| | - R Greifenhagen
- Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany
| | - F Guber
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
| | - M Gumberidze
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - S Harabasz
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
- Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - T Heinz
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - T Hennino
- Laboratoire de Physique des 2 infinis Irène Joliot-Curie, Université Paris-Saclay, CNRS-IN2P3, F-91405 Orsay, France
| | - S Hlavac
- Institute of Physics, Slovak Academy of Sciences, 84228 Bratislava, Slovakia
| | - C Höhne
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- II.Physikalisches Institut, Justus Liebig Universität Giessen, 35392 Giessen, Germany
| | - R Holzmann
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - A Ierusalimov
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
| | - A Ivashkin
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
| | - B Kämpfer
- Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany
| | - T Karavicheva
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
| | - B Kardan
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
| | - I Koenig
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - W Koenig
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - M Kohls
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
| | - B W Kolb
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - G Korcyl
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
| | - G Kornakov
- Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - F Kornas
- Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - R Kotte
- Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany
| | - A Kugler
- Nuclear Physics Institute, The Czech Academy of Sciences, 25068 Rez, Czech Republic
| | - T Kunz
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
| | - A Kurepin
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
| | - A Kurilkin
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
| | - P Kurilkin
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
| | - V Ladygin
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
| | - R Lalik
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
| | - K Lapidus
- Excellence Cluster "Origin and Structure of the Universe," 85748 Garching, Germany
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
| | - A Lebedev
- Institute of Theoretical and Experimental Physics, 117218 Moscow, Russia
| | - L Lopes
- LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal
| | - M Lorenz
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
| | - T Mahmoud
- II.Physikalisches Institut, Justus Liebig Universität Giessen, 35392 Giessen, Germany
| | - L Maier
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
| | - A Malige
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
| | - M Mamaev
- National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 115409 Moscow, Russia
| | - A Mangiarotti
- LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal
| | - J Markert
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - T Matulewicz
- Uniwersytet Warszawski, Wydział Fizyki, Instytut Fizyki Doświadczalnej, 02-093 Warszawa, Poland
| | - S Maurus
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
| | - V Metag
- II.Physikalisches Institut, Justus Liebig Universität Giessen, 35392 Giessen, Germany
| | - J Michel
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
| | - D M Mihaylov
- Excellence Cluster "Origin and Structure of the Universe," 85748 Garching, Germany
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
| | - S Morozov
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
- National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 115409 Moscow, Russia
| | - C Müntz
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
| | - R Münzer
- Excellence Cluster "Origin and Structure of the Universe," 85748 Garching, Germany
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
| | - L Naumann
- Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany
| | - K Nowakowski
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
| | - Y Parpottas
- Department of Physics, University of Cyprus, 1678 Nicosia, Cyprus
| | - V Pechenov
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - O Pechenova
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - O Petukhov
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
| | - K Piasecki
- Uniwersytet Warszawski, Wydział Fizyki, Instytut Fizyki Doświadczalnej, 02-093 Warszawa, Poland
| | - J Pietraszko
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - W Przygoda
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
| | - K Pysz
- Institute of Nuclear Physics, Polish Academy of Sciences, 31342 Kraków, Poland
| | - S Ramos
- LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal
| | - B Ramstein
- Laboratoire de Physique des 2 infinis Irène Joliot-Curie, Université Paris-Saclay, CNRS-IN2P3, F-91405 Orsay, France
| | - N Rathod
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
| | - A Reshetin
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
| | - P Rodriguez-Ramos
- Nuclear Physics Institute, The Czech Academy of Sciences, 25068 Rez, Czech Republic
| | - P Rosier
- Laboratoire de Physique des 2 infinis Irène Joliot-Curie, Université Paris-Saclay, CNRS-IN2P3, F-91405 Orsay, France
| | - A Rost
- Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - A Rustamov
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - A Sadovsky
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
| | - P Salabura
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
| | - T Scheib
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
| | - H Schuldes
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
| | - E Schwab
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - F Scozzi
- Technische Universität Darmstadt, 64289 Darmstadt, Germany
- Laboratoire de Physique des 2 infinis Irène Joliot-Curie, Université Paris-Saclay, CNRS-IN2P3, F-91405 Orsay, France
| | - F Seck
- Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - P Sellheim
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
| | - I Selyuzhenkov
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 115409 Moscow, Russia
| | - J Siebenson
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
| | - L Silva
- LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal
| | - U Singh
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
| | - J Smyrski
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
| | - Yu G Sobolev
- Nuclear Physics Institute, The Czech Academy of Sciences, 25068 Rez, Czech Republic
| | - S Spataro
- Dipartimento di Fisica and INFN, Università di Torino, 10125 Torino, Italy
| | - S Spies
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
| | - H Ströbele
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
| | - J Stroth
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
| | - C Sturm
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - O Svoboda
- Nuclear Physics Institute, The Czech Academy of Sciences, 25068 Rez, Czech Republic
| | - M Szala
- Institut für Kernphysik, Goethe-Universität, 60438 Frankfurt, Germany
| | - P Tlusty
- Nuclear Physics Institute, The Czech Academy of Sciences, 25068 Rez, Czech Republic
| | - M Traxler
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - H Tsertos
- Department of Physics, University of Cyprus, 1678 Nicosia, Cyprus
| | - E Usenko
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
| | - V Wagner
- Nuclear Physics Institute, The Czech Academy of Sciences, 25068 Rez, Czech Republic
| | - C Wendisch
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - M G Wiebusch
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - J Wirth
- Excellence Cluster "Origin and Structure of the Universe," 85748 Garching, Germany
- Physik Department E62, Technische Universität München, 85748 Garching, Germany
| | - D Wójcik
- Uniwersytet Warszawski, Wydział Fizyki, Instytut Fizyki Doświadczalnej, 02-093 Warszawa, Poland
| | - Y Zanevsky
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
| | - P Zumbruch
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
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Salabura P, Adamczewski-Musch J, Arnoldi-Meadows B, Belounnas A, Belyaev A, Blanco A, Blume C, Böhmer M, Borisenko S, Chlad L, Chudoba P, Ciepał I, Dittert D, Dreyer J, Esmail W, Dürr M, Fabbietti L, Fateev S, Fonte P, Friese J, Fröhlich I, Förtsch J, Galatyuk T, Gernhäuser R, Golosov O, Golubeva M, Greifenhagen R, Guber F, Gumberidze M, Harabasz S, Hensch R, Höhne C, Holzmann R, Huck H, Ierusalimov A, Ivashkin A, Kämpfer B, Kampert KH, Kardan B, Koenig I, Koenig W, Kornakov G, Kornas F, Kotte R, Kozela A, Kres I, Kuboś J, Kugler A, Kulesa P, Ladygin V, Lalik R, Lebedev A, Lebedev S, Linev S, Lopes L, Lorenz M, Lykasov G, Mahmoud T, Malige A, Markert J, Matulewicz T, Maurus S, Metag V, Michel J, Morozov S, Müntz C, Naumann L, Nowakowski K, Otto JH, Patel V, Pauly C, Pechenov V, Pechenova O, Petukhov O, Pfeifer D, Piasecki K, Pietraszko J, Prozorov A, Przygoda W, Pysz K, Ramstein B, Rathod N, Reshetin A, Ritman L, Rodriguez-Ramos P, Rost A, Salabura P, Scozzi F, Seck F, Selyuzhenkov I, Shabanov I, Singh US, Smyrski J, Spies S, Ströbele H, Stroth J, Stumm J, Svoboda O, Szala M, Tlusty P, Traxler M, Ungethüm C, Vazquez-Doce O, Wagner V, Weber A, Wendisch C, Wiebusch M, Wintz P, Wirth J, Zhilin A, Zumbruch P. Exploring time like tranistions in pp, πp and AA reactions with HADES. EPJ Web Conf 2020. [DOI: 10.1051/epjconf/202024101013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Radiative transition of an excited baryon to a nucleon with emission of a virtual massive photon converting to dielectron pair (Dalitz decays) provides important information about baryon-photon coupling at low q2 in timelike region. A prominent enhancement in the respective electromagnetic transition Form Factors (etFF) at q2 near vector mesons ρ/ω poles has been predicted by various calculations reflecting strong baryon-vector meson couplings. The understanding of these couplings is also of primary importance for the interpretation of the emissivity of QCD matter studied in heavy ion collisions via dilepton emission. Dedicated measurements of baryon Dalitz decays in proton-proton and pion-proton scattering with HADES detector at GSI/FAIR are presented and discussed. The relevance of these studies for the interpretation of results obtained from heavy ion reactions is elucidated on the example of the HADES results.
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Adamczewski-Musch J, Arnold O, Atomssa ET, Behnke C, Belounnas A, Belyaev A, Berger-Chen JC, Biernat J, Blanco A, Blume C, Böhmer M, Chernenko S, Chlad L, Chudoba P, Ciepał I, Deveaux C, Dittert D, Dreyer J, Epple E, Fabbietti L, Fateev O, Fonte P, Franco C, Friese J, Fröhlich I, Galatyuk T, Garzón JA, Gernhäuser R, Golubeva M, Greifenhagen R, Guber F, Gumberidze M, Harabasz S, Heinz T, Hennino T, Höhne C, Holzmann R, Ierusalimov A, Ivashkin A, Kämpfer B, Kardan B, Koenig I, Koenig W, Kolb BW, Korcyl G, Kornakov G, Kornas F, Kotte R, Kuboś J, Kugler A, Kunz T, Kurepin A, Kurilkin A, Kurilkin P, Ladygin V, Lalik R, Lapidus K, Lebedev A, Linev S, Lopes L, Lorenz M, Mahmoud T, Maier L, Malige A, Markert J, Maurus S, Metag V, Michel J, Mihaylov DM, Mikhaylov V, Morozov S, Müntz C, Münzer R, Naumann L, Nowakowski K, Parpottas Y, Pechenov V, Pechenova O, Petukhov O, Pietraszko J, Prozorov AP, Przygoda W, Ramstein B, Rathod N, Reshetin A, Rodriguez-Ramos P, Rost A, Sadovsky A, Salabura P, Scheib T, Schmidt-Sommerfeld K, Schuldes H, Schwab E, Scozzi F, Seck F, Sellheim P, Siebenson J, Silva L, Smyrski J, Spataro S, Spies S, Ströbele H, Stroth J, Strzempek P, Sturm C, Svoboda O, Szala M, Tlusty P, Traxler M, Tsertos H, Ungethüm C, Vázquez Doce O, Wagner V, Wendisch C, Wiebusch MG, Wirth J, Wójcik D, Zanevsky Y, Zumbruch P, Curceanu C, Piscicchia K, Scordo A. Strong Absorption of Hadrons with Hidden and Open Strangeness in Nuclear Matter. Phys Rev Lett 2019; 123:022002. [PMID: 31386541 DOI: 10.1103/physrevlett.123.022002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 04/29/2019] [Indexed: 06/10/2023]
Abstract
We present the first observation of K^{-} and ϕ absorption within nuclear matter by means of π^{-}-induced reactions on C and W targets at an incident beam momentum of 1.7 GeV/c studied with HADES at SIS18/GSI. The double ratio (K^{-}/K^{+})_{W}/(K^{-}/K^{+})_{C} is found to be 0.319±0.009(stat)_{-0.012}^{+0.014}(syst) indicating a larger absorption of K^{-} in heavier targets as compared to lighter ones. The measured ϕ/K^{-} ratios in π^{-}+C and π^{-}+W reactions within the HADES acceptance are found to be equal to 0.55±0.04(stat)_{-0.07}^{+0.06}(syst) and to 0.63±0.06(stat)_{-0.11}^{+0.11}(syst), respectively. The similar ratios measured in the two different reactions demonstrate for the first time experimentally that the dynamics of the ϕ meson in nuclear medium is strongly coupled to the K^{-} dynamics. The large difference in the ϕ production off C and W nuclei is discussed in terms of a strong ϕN in-medium coupling. These results are relevant for the description of heavy-ion collisions and the structure of neutron stars.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - C Curceanu
- INFN, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
| | - K Piscicchia
- INFN, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
- CENTRO FERMI - Museo Storico della Fisica e Centro Studi e Ricerche "Enrico Fermi", 00184 Rome, Italy
| | - A Scordo
- INFN, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
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Ramstein B, Adamczewski-Musch J, Arnold O, Arnoldi-Meadows B, Belounnas A, Belyaev A, Biernat J, Blanco A, Blume C, Böhmer M, Bordalo P, Chlad L, Chudoba P, Ciepał I, Deveaux C, Dittert D, Dreyer J, Fabbietti L, Fateev O, Fonte P, Franco C, Friese J, Fröhlich I, Galatyuk T, Garzón JA, Gernhäuser R, Gillitzer A, Golubeva M, Greifenhagen R, Guber F, Gumberidze M, Harabasz S, Heinz T, Hennino T, Himmelreich M, Höhne C, Holzmann R, Ierusalimov A, Ivanov V, Ivashkin A, Kämpfer B, Kajetanowicz M, Kampert KH, Karavicheva T, Kardan B, Khomyakov V, Koenig I, Koenig W, Korcyl G, Kornakov G, Kornas F, Kotte R, Kozela A, Kuboś J, Kugler A, Kunz T, Kurepin A, Kurilkin P, Kushpil V, Ladygin V, Lalik R, Lebedev A, Linev S, Liu M, Lopes L, Lorenz M, Lykasov G, Mahmoud T, Malakhov A, Markert J, Maurus S, Metag V, Michel J, Mihaylov D, Mikhaylov V, Morozov S, Müntz C, Naumann L, Nowakowski K, Parpottas Y, Patel V, Pauly C, Pechenov V, Pechenova O, Pereira A, Petousis V, Petukhov O, Pfeifer D, Pietraszko J, Przygoda W, Pysz K, Ramos S, Reshetin A, Ritman L, Rodriguez-Ramos P, Rost A, Sadovsky A, Salabura P, Scheib T, Schuldes H, Schwab E, Scozzi F, Seck F, Sellheim P, Selyuzhenkov I, Silva L, Smyrski J, Sobiella M, Spataro S, Spies S, Ströbele H, Stroth J, Strzempek P, Svoboda O, Szala M, Taranenko A, Tlusty P, Traxler M, Troyan A, Tsertos H, Wagner V, Wendisch C, Wiebusch M, Wintz P, Wirth J, Włoch B, Zhilin A, Zinchenko A, Zumbruch P, Zuschke M. Time-Like Baryon Transitions studies with HADES. EPJ Web Conf 2019. [DOI: 10.1051/epjconf/201919901008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The HADES collaboration uses the e+e− production as a probe of the resonance matter produced in collisions at incident energies of 1-3.5 GeV/nucleon at GSI. Elementary reactions provide useful references for these studies and give information on resonance Dalitz decays (R→Ne+e−). Such processes are sensitive to the structure of time-like electromagnetic baryon transitions in a kinematic range where (off-shell) vector mesons play a crucial role. Results obtained in proton-proton reactions and in a commissioning pion-beam experiment are reported and prospects for future pion beam experiments and for first hyperon Dalitz decay measurements are described. The connection with the investigations of medium effects to be continued with HADES in the next years at SIS18 and SIS100 is also discussed.
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Agakishiev G, Arnold O, Balanda A, Belver D, Belyaev AV, Berger-Chen JC, Blanco A, Böhmer M, Boyard JL, Cabanelas P, Chernenko S, Dybczak A, Epple E, Fabbietti L, Fateev OV, Finocchiaro P, Fonte P, Friese J, Fröhlich I, Galatyuk T, Garzón JA, Gernhäuser R, Göbel K, Golubeva M, González-Díaz D, Guber F, Gumberidze M, Heinz T, Hennino T, Holzmann R, Ierusalimov A, Iori I, Ivashkin A, Jurkovic M, Kämpfer B, Karavicheva T, Koenig I, Koenig W, Kolb BW, Kornakov G, Kotte R, Krása A, Krizek F, Krücken R, Kuc H, Kühn W, Kugler A, Kurepin A, Ladygin V, Lalik R, Lang S, Lapidus K, Lebedev A, Liu T, Lopes L, Lorenz M, Maier L, Mangiarotti A, Markert J, Metag V, Michalska B, Michel J, Müntz C, Müntzer R, Naumann L, Pachmayer YC, Palka M, Parpottas Y, Pechenov V, Pechenova O, Pietraszko J, Przygoda W, Ramstein B, Reshetin A, Rustamov A, Sadovsky A, Salabura P, Schmah A, Schwab E, Siebenson J, Sobolev YG, Spataro S, Spruck B, Ströbele H, Stroth J, Sturm C, Tarantola A, Teilab K, Tlusty P, Traxler M, Trebacz R, Tsertos H, Vasiliev T, Wagner V, Weber M, Wendisch C, Wüstenfeld J, Yurevich S, Zanevsky YV. Subthreshold Ξ^{-} production in collisions of p(3.5 GeV)+Nb. Phys Rev Lett 2015; 114:212301. [PMID: 26066429 DOI: 10.1103/physrevlett.114.212301] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Indexed: 06/04/2023]
Abstract
Results on the production of the double strange cascade hyperon Ξ^{-} are reported for collisions of p(3.5 GeV)+Nb, studied with the High Acceptance Di-Electron Spectrometer (HADES) at SIS18 at GSI Helmholtzzentrum for Heavy-Ion Research, Darmstadt. For the first time, subthreshold Ξ^{-} production is observed in proton-nucleus interactions. Assuming a Ξ^{-} phase-space distribution similar to that of Λ hyperons, the production probability amounts to P_{Ξ^{-}}=[2.0±0.4(stat)±0.3(norm)±0.6(syst)]×10^{-4} resulting in a Ξ^{-}/(Λ+Σ^{0}) ratio of P_{Ξ^{-}}/P_{Λ+Σ^{0}}=[1.2±0.3(stat)±0.4(syst)]×10^{-2}. Available model predictions are significantly lower than the measured Ξ^{-} yield.
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Affiliation(s)
- G Agakishiev
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
| | - O Arnold
- Excellence Cluster "Origin and Structure of the Universe," 85748 Garching, Germany
| | - A Balanda
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
| | - D Belver
- LabCAF Facultad de Física, Universidade de Santiago de Compostela, 15706 Santiago de Compostela, Spain
| | - A V Belyaev
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
| | - J C Berger-Chen
- Excellence Cluster "Origin and Structure of the Universe," 85748 Garching, Germany
| | - A Blanco
- LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal
| | - M Böhmer
- Physik Department E12, Technische Universität München, 85748 Garching, Germany
| | - J L Boyard
- Institut de Physique Nucléaire (UMR 8608), CNRS/IN2P3 - Université Paris Sud, F-91406 Orsay Cedex, France
| | - P Cabanelas
- LabCAF Facultad de Física, Universidade de Santiago de Compostela, 15706 Santiago de Compostela, Spain
| | - S Chernenko
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
| | - A Dybczak
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
| | - E Epple
- Excellence Cluster "Origin and Structure of the Universe," 85748 Garching, Germany
| | - L Fabbietti
- Excellence Cluster "Origin and Structure of the Universe," 85748 Garching, Germany
| | - O V Fateev
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
| | - P Finocchiaro
- Instituto Nazionale di Fisica Nucleare - Laboratori Nazionali del Sud, 95125 Catania, Italy
| | - P Fonte
- LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal
| | - J Friese
- Physik Department E12, Technische Universität München, 85748 Garching, Germany
| | - I Fröhlich
- Institut für Kernphysik, Johann Wolfgang Goethe-Universität, 60438 Frankfurt, Germany
| | - T Galatyuk
- Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - J A Garzón
- LabCAF Facultad de Física, Universidade de Santiago de Compostela, 15706 Santiago de Compostela, Spain
| | - R Gernhäuser
- Physik Department E12, Technische Universität München, 85748 Garching, Germany
| | - K Göbel
- Institut für Kernphysik, Johann Wolfgang Goethe-Universität, 60438 Frankfurt, Germany
| | - M Golubeva
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
| | | | - F Guber
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
| | - M Gumberidze
- Technische Universität Darmstadt, 64289 Darmstadt, Germany
- Institut de Physique Nucléaire (UMR 8608), CNRS/IN2P3 - Université Paris Sud, F-91406 Orsay Cedex, France
| | - T Heinz
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - T Hennino
- Institut de Physique Nucléaire (UMR 8608), CNRS/IN2P3 - Université Paris Sud, F-91406 Orsay Cedex, France
| | - R Holzmann
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - A Ierusalimov
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
| | - I Iori
- Istituto Nazionale di Fisica Nucleare, Sezione di Milano, 20133 Milano, Italy
| | - A Ivashkin
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
| | - M Jurkovic
- Physik Department E12, Technische Universität München, 85748 Garching, Germany
| | - B Kämpfer
- Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - T Karavicheva
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
| | - I Koenig
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - W Koenig
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - B W Kolb
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - G Kornakov
- LabCAF Facultad de Física, Universidade de Santiago de Compostela, 15706 Santiago de Compostela, Spain
| | - R Kotte
- Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - A Krása
- Nuclear Physics Institute, Academy of Sciences of Czech Republic, 25068 Rez, Czech Republic
| | - F Krizek
- Nuclear Physics Institute, Academy of Sciences of Czech Republic, 25068 Rez, Czech Republic
| | - R Krücken
- Physik Department E12, Technische Universität München, 85748 Garching, Germany
| | - H Kuc
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
- Institut de Physique Nucléaire (UMR 8608), CNRS/IN2P3 - Université Paris Sud, F-91406 Orsay Cedex, France
| | - W Kühn
- II. Physikalisches Institut, Justus Liebig Universität Giessen, 35392 Giessen, Germany
| | - A Kugler
- Nuclear Physics Institute, Academy of Sciences of Czech Republic, 25068 Rez, Czech Republic
| | - A Kurepin
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
| | - V Ladygin
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
| | - R Lalik
- Excellence Cluster "Origin and Structure of the Universe," 85748 Garching, Germany
| | - S Lang
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - K Lapidus
- Excellence Cluster "Origin and Structure of the Universe," 85748 Garching, Germany
| | - A Lebedev
- Institute of Theoretical and Experimental Physics, 117218 Moscow, Russia
| | - T Liu
- Institut de Physique Nucléaire (UMR 8608), CNRS/IN2P3 - Université Paris Sud, F-91406 Orsay Cedex, France
| | - L Lopes
- LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal
| | - M Lorenz
- Institut für Kernphysik, Johann Wolfgang Goethe-Universität, 60438 Frankfurt, Germany
| | - L Maier
- Physik Department E12, Technische Universität München, 85748 Garching, Germany
| | - A Mangiarotti
- LIP-Laboratório de Instrumentação e Física Experimental de Partículas, 3004-516 Coimbra, Portugal
| | - J Markert
- Institut für Kernphysik, Johann Wolfgang Goethe-Universität, 60438 Frankfurt, Germany
| | - V Metag
- II. Physikalisches Institut, Justus Liebig Universität Giessen, 35392 Giessen, Germany
| | - B Michalska
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
| | - J Michel
- Institut für Kernphysik, Johann Wolfgang Goethe-Universität, 60438 Frankfurt, Germany
| | - C Müntz
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
| | - R Müntzer
- Excellence Cluster "Origin and Structure of the Universe," 85748 Garching, Germany
- Physik Department E12, Technische Universität München, 85748 Garching, Germany
| | - L Naumann
- Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - Y C Pachmayer
- Institut für Kernphysik, Johann Wolfgang Goethe-Universität, 60438 Frankfurt, Germany
| | - M Palka
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
| | - Y Parpottas
- Department of Physics, University of Cyprus, 1678 Nicosia, Cyprus
| | - V Pechenov
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - O Pechenova
- Institut für Kernphysik, Johann Wolfgang Goethe-Universität, 60438 Frankfurt, Germany
| | - J Pietraszko
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - W Przygoda
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
| | - B Ramstein
- Institut de Physique Nucléaire (UMR 8608), CNRS/IN2P3 - Université Paris Sud, F-91406 Orsay Cedex, France
| | - A Reshetin
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
| | - A Rustamov
- Institut für Kernphysik, Johann Wolfgang Goethe-Universität, 60438 Frankfurt, Germany
| | - A Sadovsky
- Institute for Nuclear Research, Russian Academy of Science, 117312 Moscow, Russia
| | - P Salabura
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
| | - A Schmah
- Excellence Cluster "Origin and Structure of the Universe," 85748 Garching, Germany
| | - E Schwab
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - J Siebenson
- Excellence Cluster "Origin and Structure of the Universe," 85748 Garching, Germany
| | - Yu G Sobolev
- Nuclear Physics Institute, Academy of Sciences of Czech Republic, 25068 Rez, Czech Republic
| | - S Spataro
- II. Physikalisches Institut, Justus Liebig Universität Giessen, 35392 Giessen, Germany
| | - B Spruck
- II. Physikalisches Institut, Justus Liebig Universität Giessen, 35392 Giessen, Germany
| | - H Ströbele
- Institut für Kernphysik, Johann Wolfgang Goethe-Universität, 60438 Frankfurt, Germany
| | - J Stroth
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- Institut für Kernphysik, Johann Wolfgang Goethe-Universität, 60438 Frankfurt, Germany
| | - C Sturm
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - A Tarantola
- Institut für Kernphysik, Johann Wolfgang Goethe-Universität, 60438 Frankfurt, Germany
| | - K Teilab
- Institut für Kernphysik, Johann Wolfgang Goethe-Universität, 60438 Frankfurt, Germany
| | - P Tlusty
- Nuclear Physics Institute, Academy of Sciences of Czech Republic, 25068 Rez, Czech Republic
| | - M Traxler
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - R Trebacz
- Smoluchowski Institute of Physics, Jagiellonian University of Cracow, 30-059 Kraków, Poland
| | - H Tsertos
- Department of Physics, University of Cyprus, 1678 Nicosia, Cyprus
| | - T Vasiliev
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
| | - V Wagner
- Nuclear Physics Institute, Academy of Sciences of Czech Republic, 25068 Rez, Czech Republic
| | - M Weber
- Physik Department E12, Technische Universität München, 85748 Garching, Germany
| | - C Wendisch
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - J Wüstenfeld
- Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - S Yurevich
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - Y V Zanevsky
- Joint Institute of Nuclear Research, 141980 Dubna, Russia
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Przygoda W, Adamczewski-Musch J, Arnold O, Atomssa E, Behnke C, Berger-Chen J, Biernat J, Blanco A, Blume C, Böhmer M, Bordalo P, Chernenko S, Deveaux C, Dybczak A, Epple E, Fabbietti L, Fateev O, Fonte P, Franco C, Friese J, Fröhlich I, Galatyuk T, Garzón JA, Gill K, Golubeva M, Guber F, Gumberidze M, Harabasz S, Hennino T, Hlavac S, Höhne C, Holzmann R, Ierusalimov A, Ivashkin A, Jurkovic M, Kämpfer B, Karavicheva T, Kardan B, Koenig I, Koenig W, Kolb BW, Korcyl G, Kornakov G, Kotte R, Krása A, Krebs E, Kuc H, Kugler A, Kunz T, Kurepin A, Kurilkin A, Kurilkin P, Ladygin V, Lalik R, Lapidus K, Lebedev A, Lopes L, Lorenz M, Mahmoud T, Maier L, Mangiarotti A, Markert J, Metag V, Michel J, Müntz C, Münzer R, Naumann L, Palka M, Parpottas Y, Pechenov V, Pechenova O, Petousis V, Pietraszko J, Ramstein B, Rehnisch L, Reshetin A, Rost A, Rustamov A, Sadovsky A, Salabura P, Scheib T, Schmidt-Sommerfeld K, Schuldes H, Sellheim P, Siebenson J, Silva L, Sobolev Y, Spataro S, Ströbele H, Stroth J, Strzempek P, Sturm C, Svoboda O, Tarantola A, Teilab K, Tlusty P, Traxler M, Tsertos H, Vasiliev T, Wagner V, Wendisch C, Wirth J, Wüstenfeld J, Zanevsky Y, Zumbruch P. Investigating hadronic resonances in pp interactions with HADES. EPJ Web of Conferences 2015. [DOI: 10.1051/epjconf/20159700024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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7
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Epple E, Adamczewski-Musch J, Arnold O, Atomssa E, Behnke C, Berger-Chen J, Biernat J, Blanco A, Blume C, Böhmer M, Bordalo P, Chernenko S, Deveaux C, Dybczak A, Fabbietti L, Fateev O, Fonte P, Franco C, Friese J, Fröhlich I, Galatyuk T, Garzón JA, Gill K, Golubeva M, Guber F, Gumberidze M, Harabasz S, Hennino T, Hlavac S, Höhne C, Holzmann R, Ierusalimov A, Ivashkin A, Jurkovic M, Kämpfer B, Karavicheva T, Kardan K, Koenig I, Koenig W, Kolb BW, Korcyl G, Kornakov G, Kotte R, Krása A, Krebs E, Kuc H, Kugler A, Kunz T, Kurepin A, Kurilkin A, Kurilkin P, Ladygin V, Lalik R, Lapidus K, Lebedev A, Lopes L, Lorenz M, Mahmoud T, Maier L, Mangiarotti A, Markert J, Metag V, Michel J, Müntz C, Münzer R, Naumann L, Palka M, Parpottas Y, Pechenov V, Pechenova O, Petousis V, Pietraszko J, Przygoda W, Ramstein B, Rehnisch L, Reshetin A, Rost A, Rustamov A, Sadovsky A, Salabura P, Scheib T, Schmidt-Sommerfeld K, Schuldes H, Sellheim P, Siebenson J, Silva L, Sobolev Y, Spataro S, Ströbele H, Stroth J, Strzempek P, Sturm C, Svoboda O, Tarantola A, Teilab K, Tlusty P, Traxler M, Tsertos H, Vasiliev T, Wagner V, Wendisch C, Wirth J, Wüstenfeld J, Zanevsky Y, Zumbruch P. Highlights of Resonance Measurements With HADES. EPJ Web of Conferences 2015. [DOI: 10.1051/epjconf/20159700015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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8
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Kurilkin A, Arnold O, Atomssa ET, Behnke C, Belyaev A, Berger-Chen JC, Biernat J, Blanco A, Blume C, Böhmer M, Bordalo P, Chernenko S, Deveaux C, Dybczak A, Epple E, Fabbietti L, Fateev O, Fonte P, Franco C, Friese J, Fröhlich I, Galatyuk T, Garzón JA, Gill K, Golubeva M, González-Díaz D, Guber F, Gumberidze M, Harabasz S, Hennino T, Höhne C, Holzmann R, Ierusalimov A, Ivashkin A, Jurkovic M, Kämpfer B, Karavicheva T, Kardan K, Koenig I, Koenig W, Kolb BW, Korcyl G, Kornakov G, Kotte R, Krása A, Krebs E, Krizek F, Kuc H, Kugler A, Kunz T, Kurepin A, Kurilkin P, Ladygin V, Lalik R, Lang S, Lapidus K, Lebedev A, Lopes L, Lorenz M, Maier L, Mangiarotti A, Markert J, Metag V, Michel J, Müntz C, Münzer R, Naumann L, Palka M, Pechenov V, Pechenova O, Petousis V, Pietraszko J, Przygoda W, Ramstein B, Rehnisch L, Reshetin A, Rost A, Rustamov A, Sadovsky A, Salabura P, Scheib T, Schmidt-Sommerfeld K, Schuldes H, Sellheim P, Siebenson J, Silva L, Sobolev YG, Spataro S, Ströbele H, Stroth J, Strzempek P, Sturm C, Svoboda O, Tarantola A, Teilab K, Tlusty P, Traxler M, Tsertos H, Vasiliev T, Wagner V, Wendisch C, Wirth J, Wüstenfeld J, Yurevich S, Zanevsky Y. Measurement of the quasi free np→ npπ+π−and np→ ppπ−π0reactions at 1.25 GeV With HADES. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20148102009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Ramstein B, Adamczewski-Musch J, Arnold O, Atomssa E, Behnke C, Berger-Chen J, Biernat J, Blanco A, Blume C, Böhmer M, Bordalo P, Chernenko S, Deveaux C, Dybczak A, Epple E, Fabbietti L, Fateev O, Fonte P, Franco C, Friese J, Fröhlich I, Galatyuk T, Garzón JA, Gill K, Golubeva M, Guber F, Gumberidze M, Harabasz S, Hennino T, Hlavac S, Höhne C, Holzmann R, Ierusalimov A, Ivashkin A, Jurkovic M, Kämpfer B, Karavicheva T, Kardan K, Koenig I, Koenig W, Kolb BW, Korcyl G, Kornakov G, Kotte R, Krása A, Krebs E, Kuc H, Kugler A, Kunz T, Kurepin A, Kurilkin A, Kurilkin P, Ladygin V, Lalik R, Lapidus K, Lebedev A, Lopes L, Lorenz M, Mahmoud T, Maier L, Mangiarotti A, Markert J, Metag V, Michel J, Müntz C, Münzer R, Naumann L, Palka M, Parpottas Y, Pechenov V, Pechenova O, Petousis V, Pietraszko J, Przygoda W, Rehnisch L, Reshetin A, Rost A, Rustamov A, Sadovsky A, Salabura P, Scheib T, Schmidt-Sommerfeld K, Schuldes H, Sellheim P, Siebenson J, Silva L, Sobolev Y, Spataro S, Ströbele H, Stroth J, Strzempek P, Sturm C, Svoboda O, Tarantola A, Teilab K, Tlusty P, Traxler M, Tsertos H, Vasiliev T, Wagner V, Wendisch C, Wirth J, Wüstenfeld J, Zanevsky Y, Zumbruch P. HADES results in elementary reactions. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20148101003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Pietraszko J, Agakishiev G, Behnke C, Belver D, Belyaev A, Berger-Chen J, Blanco A, Blume C, Böhmer M, Cabanelas P, Chernenko S, Dritsa C, Dybczak A, Epple E, Fabbietti L, Fateev O, Fonte P, Friese J, Fröhlich I, Galatyuk T, Garzón JA, Gill K, Golubeva M, González-Díaz D, Guber F, Gumberidze M, Harabasz S, Hennino T, Höhne C, Holzmann R, Huck P, Ierusalimov A, Ivashkin A, Jurkovic M, Kämpfer B, Karavicheva T, Koenig I, Koenig W, Kolb BW, Korcyl G, Kornakov G, Kotte R, Krása A, Krebs E, Krizek F, Kuc H, Kugler A, Kurepin A, Kurilkin A, Kurilkin P, Ladygin V, Lalik R, Lang S, Lapidus K, Lebedev A, Lopes L, Lorenz M, Maier L, Mangiarotti A, Markert J, Metag V, Michel J, Müntz C, Münzer R, Naumann L, Palka M, Parpottas Y, Pechenov V, Pechenova O, Przygoda W, Ramstein B, Rehnisch L, Reshetin A, Rustamov A, Sadovsky A, Salabura P, Scheib T, Schuldes H, Siebenson J, Sobolev Y, Spataro S, Ströbele H, Stroth J, Strzempek P, Sturm C, Svoboda O, Tarantola A, Teilab K, Tlusty P, Traxler M, Tsertos H, Vasiliev T, Wagner V, Weber M, Wendisch C, Wüstenfeld J, Yurevich S, Zanevsky Y. In-medium hadron properties measured with HADES. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20146604023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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11
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Lorenz M, Agakishiev G, Behnke C, Belver D, Belyaev A, Berger-Chen J, Blanco A, Blume C, Böhmer M, Cabanelas P, Chernenko S, Dritsa C, Dybczak A, Epple E, Fabbietti L, Fateev O, Fonte P, Friese J, Fröhlich I, Galatyuk T, Garzón JA, Gill K, Golubeva M, González-Díaz D, Guber F, Gumberidze M, Harabasz S, Hennino T, Höhne C, Holzmann R, Huck P, Ierusalimov A, Ivashkin A, Jurkovic M, Kämpfer B, Karavicheva T, Koenig I, Koenig W, Kolb BW, Korcyl G, Kornakov G, Kotte R, Krása A, Krebs E, Krizek F, Kuc H, Kugler A, Kurepin A, Kurilkin A, Kurilkin P, Ladygin V, Lalik R, Lang S, Lapidus K, Lebedev A, Lopes L, Maier L, Mangiarotti A, Markert J, Metag V, Michel J, Müntz C, Münzer R, Naumann L, Palka M, Parpottas Y, Pechenov V, Pechenova O, Pietraszko J, Przygoda W, Ramstein B, Rehnisch L, Reshetin A, Rustamov A, Sadovsky A, Salabura P, Scheib T, Schuldes H, Siebenson J, Sobolev Y, Spataro S, Ströbele H, Stroth J, Strzempek P, Sturm C, Svoboda O, Tarantola A, Teilab K, Tlusty P, Traxler M, Tsertos H, Vasiliev T, Wagner V, Weber M, Wendisch C, Wüstenfeld J, Yurevich S, Zanevsky Y. Low mass dielectrons radiated off cold nuclear matter measured with HADES. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20146609011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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12
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Kurilkin P, Agakishiev G, Behnke C, Belver D, Belyaev A, Berger-Chen J, Blanco A, Blume C, Böhmer M, Cabanelas P, Chernenko S, Dritsa C, Dybczak A, Epple E, Fabbietti L, Fateev O, Fonte P, Friese J, Fröhlich I, Galatyuk T, Garzón JA, Gill K, Golubeva M, González-Díaz D, Guber F, Gumberidze M, Harabasz S, Hennino T, Holzmann R, Huck P, Höhne C, Ierusalimov A, Ivashkin A, Jurkovic M, Kämpfer B, Karavicheva T, Koenig I, Koenig W, Kolb BW, Korcyl G, Kornakov G, Kotte R, Krása A, Krebs E, Krizek F, Kuc H, Kugler A, Kurepin A, Kurilkin A, Ladygin V, Lalik R, Lang S, Lapidus K, Lebedev A, Lopes L, Lorenz M, Maier L, Mangiarotti A, Markert J, Metag V, Michel J, Müntz C, Münzer R, Naumann L, Palka M, Parpottas Y, Pechenov V, Pechenova O, Pietraszko J, Przygoda W, Ramstein B, Rehnisch L, Reshetin A, Rustamov A, Sadovsky A, Salabura P, Scheib T, Schuldes H, Siebenson J, Sobolev Y, Spataro S, Ströbele H, Stroth J, Strzempek P, Sturm C, Svoboda O, Tarantola A, Teilab K, Tlusty P, Traxler M, Tsertos H, Vasiliev T, Wagner V, Weber M, Wendisch C, Wüstenfeld J, Yurevich S, Zanevsky Y. The dp-elastic cross section measurement at the deuteron kinetic energy of 2.5 GeV. EPJ Web of Conferences 2012. [DOI: 10.1051/epjconf/20123709021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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13
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Lorenz M, Agakishiev G, Behnke C, Belver D, Belyaev A, Berger-Chen J, Blanco A, Blume C, Böhmer M, Cabanelas P, Dritsa C, Dybczak A, Epple E, Fabbietti L, Fonte P, Friese J, Fröhlich I, Galatyuk T, Garzón JA, Gill K, Golubeva M, Gonzáalez-Díaz D, Guber F, Gumberidze M, Harabasz S, Hennino T, Holzmann R, Huck P, Höhne C, Ierusalimov A, Ivashkin A, Jurkovic M, Kämpfer B, Karavicheva T, Koenig I, Koenig W, Kolb BW, Korcyl G, Kornakov G, Kotte R, Krása A, Krebs E, Krizek F, Kuc H, Kugler A, Kurepin A, Kurilkin A, Kurilkin P, Ladygin V, Lalik R, Lang S, Lapidus K, Lebedev A, Lopes L, Maier L, Mangiarotti A, Markert J, Metag V, Michel J, Müntz C, Münzer R, Naumann L, Palka M, Parpottas Y, Pechenov V, Pechenova O, Pietraszko J, Przygoda W, Ramstein B, Rehnisch L, Reshetin A, Rustamov A, Sadovsky A, Salabura P, Scheib T, Schuldes H, Siebenson J, Sobolev Y, Spataroe S, Ströbele H, Stroth J, Strzempek P, Sturm C, Svoboda O, Tarantola A, Teilab K, Tlusty P, Traxler M, Tsertos H, Vasiliev T, Wagner V, Weber M, Wendisch C, Wüstenfeld J, Yurevich S, Zanevsky Y. Resonance production in p+p, p+A and A+A collisions measured with HADES. EPJ Web of Conferences 2012. [DOI: 10.1051/epjconf/20123600015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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14
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Agakishiev G, Balanda A, Bassini R, Belver D, Belyaev AV, Blanco A, Böhmer M, Boyard JL, Braun-Munzinger P, Cabanelas P, Castro E, Chernenko S, Christ T, Destefanis M, Díaz J, Dohrmann F, Dybczak A, Eberl T, Fabbietti L, Fateev OV, Finocchiaro P, Fonte P, Friese J, Fröhlich I, Galatyuk T, Garzón JA, Gernhäuser R, Gil A, Gilardi C, Golubeva M, González-Díaz D, Guber F, Hennino T, Holzmann R, Iori I, Ivashkin A, Jurkovic M, Kämpfer B, Kanaki K, Karavicheva T, Kirschner D, Koenig I, Koenig W, Kolb BW, Kotte R, Krizek F, Krücken R, Kühn W, Kugler A, Kurepin A, Lang S, Lange JS, Lapidus K, Liu T, Lopes L, Lorenz M, Maier L, Mangiarotti A, Markert J, Metag V, Michalska B, Michel J, Mishra D, Morinière E, Mousa J, Müntz C, Naumann L, Otwinowski J, Pachmayer YC, Palka M, Parpottas Y, Pechenov V, Pechenova O, Pietraszko J, Przygoda W, Ramstein B, Reshetin A, Roy-Stephan M, Rustamov A, Sadovsky A, Sailer B, Salabura P, Schmah A, Sobolev YG, Spataro S, Spruck B, Ströbele H, Stroth J, Sturm C, Sudol M, Tarantola A, Teilab K, Tlusty P, Traxler M, Trebacz R, Tsertos H, Wagner V, Weber M, Wisniowski M, Wojcik T, Wüstenfeld J, Yurevich S, Zanevsky YV, Zhou P, Zumbruch P. Deep subthreshold Xi;{-} production in Ar + KCl reactions at 1.76A GeV. Phys Rev Lett 2009; 103:132301. [PMID: 19905504 DOI: 10.1103/physrevlett.103.132301] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2009] [Indexed: 05/28/2023]
Abstract
We report first results on a deep subthreshold production of the doubly strange hyperon Xi;{-} in a heavy-ion reaction. At a beam energy of 1.76A GeV the reaction Ar + KCl was studied with the High Acceptance Di-Electron Spectrometer at SIS18/GSI. A high-statistics and high-purity Lambda sample was collected, allowing for the investigation of the decay channel Xi;{-} --> Lambdapi;{-}. The deduced Xi;{-}/(Lambda + Sigma;{0}) production ratio of (5.6 +/- 1.2_{-1.7};{+1.8}) x 10;{-3} is significantly larger than available model predictions.
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Affiliation(s)
- G Agakishiev
- II.Physikalisches Institut, Justus Liebig Universität Giessen, 35392 Giessen, Germany
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15
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Agakichiev G, Agodi C, Alvarez-Pol H, Bałanda A, Bertini D, Bielcik J, Bellia G, Böhmer M, Bokemeyer H, Boyard JL, Braun-Munzinger P, Cabanelas P, Chernenko S, Christ T, Coniglione R, Cosentino L, Díaz J, Dohrmann F, Durán I, Eberl T, Enghardt W, Fabbietti L, Fateev O, Fernandez C, Finocchiaro P, Friese J, Fröhlich I, Fuentes B, Garabatos C, Garzón JA, Gernhäuser R, Gilardi C, Golubeva M, González-Díaz D, Grosse E, Guber F, Hennino T, Hlavac S, Holzmann R, Homolka J, Ierusalimov A, Iori I, Ivashkin A, Jaskuła M, Jurkovic M, Kagarlis M, Kajetanowicz M, Kämpfer B, Kanaki K, Karavicheva T, Kastenmüller A, Kidoń L, Kienle P, Koenig I, Koenig W, Körner HJ, Kolb BW, Kotte R, Krücken R, Kugler A, Kühn W, Kulessa R, Kurepin A, Lang S, Lange S, Lehnert J, Lins E, Magestro D, Maiolino C, Malarz A, Markert J, Metag V, Mousa J, Münch M, Müntz C, Naumann L, Nekhaev A, Novotny J, Otwinowski J, Pachmayer YC, Pechenov V, Pérez T, Piattelli P, Pietraszko J, Pleskac R, Płoskoń M, Pospísil V, Prokopowicz W, Przygoda W, Ramstein B, Reshetin A, Ritman J, Roy-Stephan M, Rustamov A, Sadovsky A, Sailer B, Salabura P, Sánchez M, Sapienza P, Schmah A, Schön H, Schön W, Schröder C, Schwab E, Simon RS, Smolyankin V, Smykov L, Spataro S, Spruck B, Ströbele H, Stroth J, Sturm C, Sudoł M, Suk M, Taranenko A, Tlusty P, Toia A, Traxler M, Tsertos H, Vassiliev D, Vázquez A, Wagner V, Waluś W, Wiśniowski M, Wójcik T, Wüstenfeld J, Zanevsky Y, Zeitelhack K, Zovinec D, Zumbruch P. Dielectron production in 12C+12C collisions at 2A GeV with the HADES spectrometer. Phys Rev Lett 2007; 98:052302. [PMID: 17358850 DOI: 10.1103/physrevlett.98.052302] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2006] [Indexed: 05/14/2023]
Abstract
The invariant-mass spectrum of e+e- pairs produced in 12C+12C collisions at an incident energy of 2 GeV per nucleon has been measured for the first time. The measured pair production probabilities span over 5 orders of magnitude from the pi(0)-Dalitz to the rho/omega invariant-mass region. Dalitz decays of pi(0) and eta account for all the yield up to 0.15 GeV/c(2), but for only about 50% above this mass. A comparison with model calculations shows that the excess pair yield is likely due to baryon-resonance and vector-meson decays. Transport calculations based on vacuum spectral functions fail, however, to describe the entire mass region.
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Affiliation(s)
- G Agakichiev
- II.Physikalisches Institut, Justus Liebig Universität Giessen, 35392 Giessen, Germany
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16
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Scheinast W, Böttcher I, Debowski M, Dohrmann F, Förster A, Grosse E, Koczoń P, Kohlmeyer B, Laue F, Menzel M, Naumann L, Schwab E, Senger P, Shin Y, Ströbele H, Sturm C, Surówka G, Uhlig F, Wagner A, Waluś W, Kämpfer B, Barz HW. In-medium effects on phase space distributions of antikaons measured in proton-nucleus collisions. Phys Rev Lett 2006; 96:072301. [PMID: 16606077 DOI: 10.1103/physrevlett.96.072301] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2005] [Indexed: 05/08/2023]
Abstract
Differential production cross sections of K+/- mesons have been measured in p + C and p + Au collisions at 1.6, 2.5, and 3.5 GeV proton beam energy. At beam energies close to the production threshold, the K- multiplicity is strongly enhanced with respect to proton-proton collisions. According to microscopic transport calculations, this enhancement is caused by two effects: the strangeness exchange reaction NY --> K- NN and an attractive in-medium K- N potential at saturation density.
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Affiliation(s)
- W Scheinast
- Forschungszentrum Rossendorf, D-01314 Dresden, Germany
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17
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Uhlig F, Förster A, Böttcher I, Debowski M, Dohrmann F, Grosse E, Koczoń P, Kohlmeyer B, Laue F, Menzel M, Naumann L, Oeschler H, Scheinast W, Schwab E, Senger P, Shin Y, Ströbele H, Sturm C, Surówka G, Wagner A, Waluś W. Observation of different azimuthal emission patterns of K+ and of K- mesons in heavy-ion collisions at 1-2 A GeV. Phys Rev Lett 2005; 95:012301. [PMID: 16090609 DOI: 10.1103/physrevlett.95.012301] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2004] [Indexed: 05/03/2023]
Abstract
Azimuthal distributions of pi+, K+, and K- mesons have been measured in Au+Au reactions at 1.5A GeV and Ni+Ni reactions at 1.93 A GeV. In semicentral collisions at midrapidity, pi+ and K+ mesons are emitted preferentially perpendicular to the reaction plane in both collision systems. In contrast for K- mesons in Ni+Ni reactions, an in-plane elliptic flow was observed for the first time at these incident energies.
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Affiliation(s)
- F Uhlig
- Technische Universität Darmstadt, D-64289 Darmstadt, Germany
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18
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Alt C, Anticic T, Baatar B, Barna D, Bartke J, Betev L, Białkowska H, Billmeier A, Blume C, Boimska B, Botje M, Bracinik J, Bramm R, Brun R, Buncić P, Cerny V, Christakoglou P, Chvala O, Cramer JG, Csató P, Darmenov N, Dimitrov A, Dinkelaker P, Eckardt V, Farantatos G, Flierl D, Fodor Z, Foka P, Freund P, Friese V, Gál J, Gaździcki M, Georgopoulos G, Gładysz E, Grebieszkow K, Hegyi S, Höhne C, Kadija K, Karev A, Kliemant M, Kniege S, Kolesnikov VI, Kollegger T, Kornas E, Korus R, Kowalski M, Kraus I, Kreps M, van Leeuwen M, Lévai P, Litov L, Lungwitz B, Makariev M, Malakhov AI, Markert C, Mateev M, Mayes BW, Melkumov GL, Meurer C, Mischke A, Mitrovski M, Molnár J, Mrówczyński S, Pálla G, Panagiotou AD, Panayotov D, Petridis A, Pikna M, Pinsky L, Pühlhofer F, Reid JG, Renfordt R, Richard A, Roland C, Roland G, Rybczyński M, Rybicki A, Sandoval A, Sann H, Schmitz N, Seyboth P, Siklér F, Sitar B, Skrzypczak E, Stefanek G, Stock R, Ströbele H, Susa T, Szentpétery I, Sziklai J, Trainor TA, Varga D, Vassiliou M, Veres GI, Vesztergombi G, Vranić D, Wetzler A, Włodarczyk Z, Yoo IK, Zaranek J, Zimányi J. Omega- and Omega+ production in central Pb + Pb collisions at 40 and 158A GeV. Phys Rev Lett 2005; 94:192301. [PMID: 16090164 DOI: 10.1103/physrevlett.94.192301] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2004] [Indexed: 05/03/2023]
Abstract
Results are presented on Omega production in central Pb+Pb collisions at 40 and 158A GeV beam energy. For the first time in heavy ion reactions, rapidity distributions and total yields were measured for the sum Omega(-) + Omega(+) at 40A GeV and for Omega(-) and Omega(+) separately at 158A GeV. The yields are strongly underpredicted by the string-hadronic UrQMD model but agree better with predictions from hadron gas models.
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Affiliation(s)
- C Alt
- Fachbereich Physik der Universität, Frankfurt, Germany
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19
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Alt C, Anticic T, Baatar B, Barna D, Bartke J, Betev L, Białkowska H, Billmeier A, Blume C, Boimska B, Botje M, Bracinik J, Bramm R, Brun R, Buncić P, Cerny V, Christakoglou P, Chvala O, Cramer JG, Csató P, Darmenov N, Dimitrov A, Dinkelaker P, Eckardt V, Farantatos G, Flierl D, Fodor Z, Foka P, Freund P, Friese V, Gál J, Gaździcki M, Georgopoulos G, Gładysz E, Grebieszkow K, Hegyi S, Höhne C, Kadija K, Karev A, Kliemant M, Kniege S, Kolesnikov VI, Kollegger T, Kornas E, Korus R, Kowalski M, Kraus I, Kreps M, van Leeuwen M, Lévai P, Litov L, Lungwitz B, Makariev M, Malakhov AI, Markert C, Mateev M, Mayes BW, Melkumov GL, Meurer C, Mischke A, Mitrovski M, Molnár J, Mrówczyński S, Pálla G, Panagiotou AD, Panayotov D, Petridis A, Pikna M, Pinsky L, Pühlhofer F, Reid JG, Renfordt R, Richard A, Roland C, Roland G, Rybczyński M, Rybicki A, Sandoval A, Sann H, Schmitz N, Seyboth P, Siklér F, Sitar B, Skrzypczak E, Stefanek G, Stock R, Ströbele H, Susa T, Szentpétery I, Sziklai J, Trainor TA, Trubnikov V, Varga D, Vassiliou M, Veres GI, Vesztergombi G, Vranić D, Wetzler A, Włodarczyk Z, Yoo IK, Zaranek J, Zimányi J. System-size dependence of strangeness production in nucleus-nucleus collisions at squareroot[sNN]=17.3 GeV. Phys Rev Lett 2005; 94:052301. [PMID: 15783629 DOI: 10.1103/physrevlett.94.052301] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2004] [Indexed: 05/24/2023]
Abstract
Emission of pi+/-, K+/-, phi, and Lambda was measured in near-central C+C and Si+Si collisions at 158 AGeV beam energy. Together with earlier data for p+p, S+S, and Pb+Pb, the system-size dependence of relative strangeness production in nucleus-nucleus collisions is obtained. Its fast rise and the saturation observed at about 60 participating nucleons can be understood as the onset of the formation of coherent systems of increasing size.
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Affiliation(s)
- C Alt
- Fachbereich Physik der Universität, Frankfurt, Germany
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Anticic T, Baatar B, Barna D, Bartke J, Behler M, Betev L, Białkowska H, Billmeier A, Blume C, Boimska B, Botje M, Bracinik J, Bramm R, Brun R, Buncić P, Cerny V, Christakoglou P, Chvala O, Cramer JG, Csató P, Darmenov N, Dimitrov A, Dinkelaker P, Eckardt V, Filip P, Flierl D, Fodor Z, Foka P, Freund P, Friese V, Gál J, Gaździcki M, Georgopoulos G, Gładysz E, Hegyi S, Höhne C, Kadija K, Karev A, Kolesnikov VI, Kollegger T, Kornas E, Korus R, Kowalski M, Kraus I, Kreps M, van Leeuwen M, Lévai P, Litov L, Makariev M, Malakhov AI, Markert C, Mateev M, Mayes BW, Melkumov GL, Meurer C, Mischke A, Mitrovski M, Molnár J, Mrówczyński S, Pálla G, Panagiotou AD, Panayotov D, Perl K, Petridis A, Pikna M, Pinsky L, Pühlhofer F, Reid JG, Renfordt R, Retyk W, Roland C, Roland G, Rybczyński M, Rybicki A, Sandoval A, Sann H, Schmitz N, Seyboth P, Siklér F, Sitar B, Skrzypczak E, Stefanek G, Stock R, Ströbele H, Susa T, Szentpétery I, Sziklai J, Trainor TA, Varga D, Vassiliou M, Veres GI, Vesztergombi G, Vranić D, Wetzler A, Włodarczyk Z, Yoo IK, Zaranek J, Zimányi J. Lambda and lambda production in central Pb-Pb collisions at 40, 80, and 158A GeV. Phys Rev Lett 2004; 93:022302. [PMID: 15323906 DOI: 10.1103/physrevlett.93.022302] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2003] [Indexed: 05/24/2023]
Abstract
Production of Lambda and Antilambda hyperons was measured in central Pb-Pb collisions at 40, 80, and 158A GeV beam energy on a fixed target. Transverse mass spectra and rapidity distributions are given for all three energies. The Lambda/pi ratio at midrapidity and in full phase space shows a pronounced maximum between the highest BNL Alternating Gradient Synchrotron and 40A GeV CERN Super Proton Synchrotron energies, whereas the Lambda/pi ratio exhibits a monotonic increase.
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Affiliation(s)
- T Anticic
- Rudjer Boskovic Institute, Zagreb, Croatia
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21
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Alt C, Anticic T, Baatar B, Barna D, Bartke J, Betev L, Białkowska H, Billmeier A, Blume C, Boimska B, Botje M, Bracinik J, Bramm R, Brun R, Buncić P, Cerny V, Christakoglou P, Chvala O, Cramer JG, Csató P, Darmenov N, Dimitrov A, Dinkelaker P, Eckardt V, Farantatos G, Filip P, Flierl D, Fodor Z, Foka P, Freund P, Friese V, Gál J, Gaździcki M, Georgopoulos G, Gładysz E, Hegyi S, Höhne C, Kadija K, Karev A, Kniege S, Kolesnikov VI, Kollegger T, Korus R, Kowalski M, Kraus I, Kreps M, van Leeuwen M, Lévai P, Litov L, Makariev M, Malakhov AI, Markert C, Mateev M, Mayes BW, Melkumov GL, Meurer C, Mischke A, Mitrovski M, Molnár J, Mrówczyński S, Pálla G, Panagiotou AD, Panayotov D, Perl K, Petridis A, Pikna M, Pinsky L, Pühlhofer F, Reid JG, Renfordt R, Retyk W, Roland C, Roland G, Rybczyński M, Rybicki A, Sandoval A, Sann H, Schmitz N, Seyboth P, Siklér F, Sitar B, Skrzypczak E, Stefanek G, Stock R, Ströbele H, Susa T, Szentpétery I, Sziklai J, Trainor TA, Varga D, Vassiliou M, Veres GI, Vesztergombi G, Vranić D, Wetzler A, Włodarczyk Z, Yoo IK, Zaranek J, Zimányi J. Evidence for an exotic S= -2, Q= -2 baryon resonance in proton-proton collisions at the CERN SPS. Phys Rev Lett 2004; 92:042003. [PMID: 14995366 DOI: 10.1103/physrevlett.92.042003] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2003] [Indexed: 05/24/2023]
Abstract
Results of resonance searches in the Xi(-)pi(-), Xi(-)pi(+), Xi;(+)pi(-), and Xi;(+)pi(+) invariant mass spectra in proton-proton collisions at sqrt[s]=17.2 GeV are presented. Evidence is shown for the existence of a narrow Xi(-)pi(-) baryon resonance with mass of 1.862+/-0.002 GeV/c(2) and width below the detector resolution of about 0.018 GeV/c(2). The significance is estimated to be above 4.2sigma. This state is a candidate for the hypothetical exotic Xi(--)(3/2) baryon with S=-2, I=3 / 2, and a quark content of (dsdsū). At the same mass, a peak is observed in the Xi(-)pi(+) spectrum which is a candidate for the Xi(0)(3/2) member of this isospin quartet with a quark content of (dsus[-]d). The corresponding antibaryon spectra also show enhancements at the same invariant mass.
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Affiliation(s)
- C Alt
- Fachbereich Physik der Universität, D-60486 Frankfurt, Germany
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22
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Förster A, Uhlig F, Böttcher I, Debowski M, Dohrmann F, Grosse E, Koczoń P, Kohlmeyer B, Laue F, Menzel M, Naumann L, Oeschler H, Scheinast W, Schwab E, Senger P, Shin Y, Ströbele H, Sturm C, Surówka G, Wagner A, Waluś W. First evidence for different freeze-out conditions for kaons and antikaons observed in heavy-ion collisions. Phys Rev Lett 2003; 91:152301. [PMID: 14611460 DOI: 10.1103/physrevlett.91.152301] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2002] [Indexed: 05/24/2023]
Abstract
Differential production cross sections of K- and K+ mesons have been measured in Ni+Ni and Au+Au collisions at a beam energy of 1.5 A GeV. The K(-)/K(+) ratio is found to be nearly constant as a function of the collision centrality and system size. The spectral slopes and the polar emission pattern differ for K- and K+ mesons. These observations indicate that K+ mesons decouple earlier from the fireball than K- mesons.
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Affiliation(s)
- A Förster
- Technische Universität, Darmstadt, D-64289 Darmstadt, Germany
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23
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Afanasiev SV, Anticic T, Bächler J, Barna D, Barnby LS, Bartke J, Barton RA, Betev L, Bialkowska H, Billmeier A, Blume C, Blyth CO, Boimska B, Botje M, Bracinik J, Brady FP, Bramm R, Brun R, Buncic P, Carr L, Cebra D, Cooper GE, Cramer JG, Csató P, Eckardt V, Eckhardt F, Ferenc D, Filip P, Fischer HG, Fodor Z, Foka P, Freund P, Friese V, Ftacnik J, Gál J, Gazdzicki M, Georgopoulos G, Gladysz E, Harris JW, Hegyi S, Hlinka V, Höhne C, Igo G, Ivanov M, Jacobs P, Janik R, Jones PG, Kadija K, Kolesnikov VI, Kollegger T, Kowalski M, Lasiuk B, van Leeuwen M, Lévai P, Malakhov AI, Margetis S, Markert C, Mayes BW, Melkumov GL, Mischke A, Molnár J, Nelson JM, Odyniec G, Pálla G, Panagiotou AD, Petridis A, Pikna M, Pinsky L, Poskanzer AM, Prindle DJ, Pühlhofer F, Reid JG, Renfordt R, Retyk W, Ritter HG, Röhrich D, Roland C, Roland G, Rybicki A, Sammer T, Sandoval A, Sann H, Schäfer E, Schmitz N, Seyboth P, Siklér F, Sitar B, Skrzypczak E, Snellings R, Squier GT, Stock R, Strmen P, Ströbele H, Susa T, Szarka I, Szentpétery I, Sziklai J, Toy M, Trainor TA, Trentalange S, Ullrich T, Varga D, Vassiliou M, Veres GI, Vesztergombi G, Voloshin S, Vranic D, Wang F, Weerasundara DD, Wenig S, Wetzler A, Whitten C, Xu N, Yates TA, Yoo IK, Zimányi J. Event-by-event fluctuations of the Kaon-to-Pion ratio in central Pb+Pb collisions at 158 GeV per nucleon. Phys Rev Lett 2001; 86:1965-1969. [PMID: 11289831 DOI: 10.1103/physrevlett.86.1965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2000] [Indexed: 05/23/2023]
Abstract
We present the first measurement of fluctuations from event to event in the production of strange particles in collisions of heavy nuclei. The ratio of charged kaons to charged pions is determined for individual central Pb+Pb collisions. After accounting for the fluctuations due to detector resolution and finite number statistics we derive an upper limit on genuine nonstatistical fluctuations, which could be related to a first- or second-order QCD phase transition. Such fluctuations are shown to be very small.
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Sturm C, Böttcher I, D&ecedil;bowski M, Förster A, Grosse E, Koczoń P, Kohlmeyer B, Laue F, Mang M, Naumann L, Oeschler H, Pühlhofer F, Schwab E, Senger P, Shin Y, Speer J, Ströbele H, Surówka G, Uhlig F, Wagner A, Waluś W. Evidence for a Soft Nuclear Equation-of-State from Kaon Production in Heavy-Ion Collisions. Phys Rev Lett 2001; 86:39-42. [PMID: 11136088 DOI: 10.1103/physrevlett.86.39] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2000] [Indexed: 05/23/2023]
Abstract
The production of pions and kaons has been measured in 197Au+197Au collisions at beam energies from 0.6 to 1.5A GeV with the kaon spectrometer at SIS/GSI. The K+ meson multiplicity per nucleon is enhanced in Au+Au collisions by factors up to 6 relative to C+C reactions, whereas the corresponding pion ratio is reduced. The ratio of the K+ meson excitation functions for Au+Au and C+C collisions increases with decreasing beam energy. This behavior is expected for a soft nuclear equation-of-state.
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Affiliation(s)
- C Sturm
- Technische Universität Darmstadt, D-64289 Darmstadt, Germany
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25
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Miskowiec D, Ahner W, Barth R, Cieslak M, Debowski M, Grosse E, Henning W, Koczon P, Schicker R, Schwab E, Senger P, Baltes P, Müntz C, Oeschler H, Sartorius S, Sturm C, Wagner A, Beckerle P, Bormann C, Brill D, Shin Y, Stein J, Stock R, Ströbele H, Kohlmeyer B, Pöppl H, Pühlhofer F, Speer J, Völkel K, Walus W. Observation of enhanced subthreshold K+ production in central collisions between heavy nuclei. Phys Rev Lett 1994; 72:3650-3653. [PMID: 10056255 DOI: 10.1103/physrevlett.72.3650] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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26
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Bächler J, Bartke J, Bialkowska H, Bock R, Brockmann R, Buncic P, Chase SI, Derado I, Eckardt V, Eschke J, Ferenc D, Fleischmann B, Foka P, Fuchs M, Gazdzicki M, Gladysz E, Harris JW, Heck W, Hoffmann M, Jacobs PM, Kabana S, Kadija K, Keidel R, Kosiec J, Kowalski M, Kühmichel A, Lahanas M, Lee JY, Ljubicic A, Margetis S, Morse R, Nappi E, Odyniec G, Paic G, Panagiotu AD, Petridis A, Piper A, Posa F, Poskanzer AM, Pugh HG, Pühlhofer F, Rai G, Rauch W, Renfordt R, Röhrich D, Roland G, Rothard H, Runge K, Sandoval A, Schambach JJ, Schmitz N, Schmoetten E, Schneider I, Seyboth P, Seyerlein J, Skrzypczak E, Stefanski P, Stock R, Ströbele H, Teitelbaum L, Tincknell ML, Tonse S, Vasileiadis G, Vesztergombi G. Charged particle spectra in central S+S collisions at 200 GeV/c per nucleon. Phys Rev Lett 1994; 72:1419-1422. [PMID: 10055604 DOI: 10.1103/physrevlett.72.1419] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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27
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Brill D, Ahner W, Baltes P, Barth R, Bormann C, Cieslak M, Debowski M, Grosse E, Henning W, Koczon P, Kohlmeyer B, Miskowiec D, Müntz C, Oeschler H, Pöppl H, Pühlhofer F, Sartorius S, Schicker R, Senger P, Shin Y, Speer J, Stein J, Stiebing K, Stock R, Ströbele H, Völkel K, Wagner A, Walus W. Azimuthally anisotropic emission of pions in symmetric heavy-ion collisions. Phys Rev Lett 1993; 71:336-339. [PMID: 10055245 DOI: 10.1103/physrevlett.71.336] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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28
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Beavis D, Bock R, Brockmann R, Danielewicz P, Fung SY, Harris JW, Keane D, Liu YM, Odyniec G, Pugh HG, Renfordt RE, Sandoval A, Schall D, Schroeder LS, Stock R, Ströbele H, Vient MA. Collective motion in Ar+Pb collision at beam energies between 400 and 1800 MeV/nucleon. Phys Rev C Nucl Phys 1992; 45:299-307. [PMID: 9967756 DOI: 10.1103/physrevc.45.299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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29
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Danielewicz P, Ströbele H, Odyniec G, Bangert D, Bock R, Brockmann R, Harris JW, Pugh HG, Rauch W, Renfordt RE, Sandoval A, Schall D, Schroeder LS, Stock R. Collective motion in nucleus-nucleus collisions at 800 MeV/nucleon. Phys Rev C Nucl Phys 1988; 38:120-134. [PMID: 9954786 DOI: 10.1103/physrevc.38.120] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Bamberger A, Bangert D, Bartke J, Bialkowska H, Bock R, Brockmann R, Chase SI, Marzo C, Palma M, Derado I, Eckardt V, Favucci C, Fent J, Ferenc D, Freund P, Gazdzicki M, Gebauer HJ, Geissler K, Guerra C, Harris JW, Heck W, Humanic T, Kadija K, Karabarbounis A, Keidel R, Kowalski M, Krischer W, Lahanas M, Margetis S, Nappi E, Odyniec G, Paic G, Panagiotou AD, Petridis A, Pfennig J, Posa F, Pretzl KP, Pugh HG, Pühlhofer F, Rai G, Ranieri A, Rauch W, Renfordt R, Röhrich D, Runge K, Sandoval A, Schall D, Schmitz N, Schouten T, Schroeder LS, Selvaggi G, Seyboth P, Seyerlein J, Skrzypczak E, Spinelli P, Stock R, Ströbele H, Thomas A, Tincknell M, Teitelbaum L, Vesztergombi G, Vranic D, Wenig S. Negative particle production in nuclear collisions at 60 and 200 GeV/nucleon. ACTA ACUST UNITED AC 1988. [DOI: 10.1007/bf01574520] [Citation(s) in RCA: 75] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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31
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Harris JW, Odyniec G, Pugh HG, Schroeder LS, Tincknell ML, Rauch W, Stock R, Bock R, Brockmann R, Sandoval A, Ströbele H, Renfordt RE, Schall D, Bangert D, Sullivan JP, Wolf KL, Dacal A, Guerra C, Ortiz ME. Pion production in high-energy nucleus-nucleus collisions. Phys Rev Lett 1987; 58:463-466. [PMID: 10034945 DOI: 10.1103/physrevlett.58.463] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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