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Andreev V, Baghdasaryan A, Begzsuren K, Belousov A, Bertone V, Bolz A, Boudry V, Brandt G, Brisson V, Britzger D, Buniatyan A, Bylinkin A, Bystritskaya L, Campbell AJ, Cantun Avila KB, Cerny K, Chekelian V, Contreras JG, Cvach J, Currie J, Dainton JB, Daum K, Diaconu C, Dobre M, Dodonov V, Eckerlin G, Egli S, Elsen E, Favart L, Fedotov A, Feltesse J, Fleischer M, Fomenko A, Gabathuler E, Gayler J, Gehrmann T, Ghazaryan S, Goerlich L, Gogitidze N, Gouzevitch M, Grab C, Grebenyuk A, Greenshaw T, Grindhammer G, Gwenlan C, Haidt D, Henderson RCW, Hladkỳ J, Hoffmann D, Horisberger R, Hreus T, Huber F, Huss A, Jacquet M, Janssen X, Jung AW, Jung H, Kapichine M, Katzy J, Kiesling C, Klein M, Kleinwort C, Kogler R, Kostka P, Kretzschmar J, Krücker D, Krüger K, Landon MPJ, Lange W, Laycock P, Lebedev A, Levonian S, Lipka K, List B, List J, Lobodzinski B, Malinovski E, Martyn HU, Maxfield SJ, Mehta A, Meyer AB, Meyer H, Meyer J, Mikocki S, Morozov A, Müller K, Naumann T, Newman PR, Niebuhr C, Niehues J, Nowak G, Olsson JE, Ozerov D, Pascaud C, Patel GD, Perez E, Petrukhin A, Picuric I, Pirumov H, Pitzl D, Plačakytė R, Polifka R, Rabbertz K, Radescu V, Raicevic N, Ravdandorj T, Reimer P, Rizvi E, Robmann P, Roosen R, Rostovtsev A, Rotaru M, Šálek D, Sankey DPC, Sauter M, Sauvan E, Schmitt S, Schoeffel L, Schöning A, Sefkow F, Shushkevich S, Soloviev Y, Sopicki P, South D, Spaskov V, Specka A, Steder M, Stella B, Straumann U, Sutton MR, Sykora T, Thompson PD, Traynor D, Truöl P, Tsakov I, Tseepeldorj B, Valkárová A, Vallée C, Van Mechelen P, Vazdik Y, Wegener D, Wünsch E, Žáček J, Zhang Z, Žlebčík R, Zohrabyan H, Zomer F. Determination of the strong coupling constant α s ( m Z ) in next-to-next-to-leading order QCD using H1 jet cross section measurements: H1 Collaboration. Eur Phys J C Part Fields 2017; 77:791. [PMID: 31997933 PMCID: PMC6956906 DOI: 10.1140/epjc/s10052-017-5314-7] [Citation(s) in RCA: 2] [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: 09/22/2017] [Accepted: 10/12/2017] [Indexed: 06/08/2023]
Abstract
The strong coupling constant α s is determined from inclusive jet and dijet cross sections in neutral-current deep-inelastic ep scattering (DIS) measured at HERA by the H1 collaboration using next-to-next-to-leading order (NNLO) QCD predictions. The dependence of the NNLO predictions and of the resulting value ofα s ( m Z ) at the Z-boson mass m Z are studied as a function of the choice of the renormalisation and factorisation scales. Using inclusive jet and dijet data together, the strong coupling constant is determined to beα s ( m Z ) = 0.1157 ( 20 ) exp ( 29 ) th . Complementary,α s ( m Z ) is determined together with parton distribution functions of the proton (PDFs) from jet and inclusive DIS data measured by the H1 experiment. The valueα s ( m Z ) = 0.1142 ( 28 ) tot obtained is consistent with the determination from jet data alone. The impact of the jet data on the PDFs is studied. The running of the strong coupling is tested at different values of the renormalisation scale and the results are found to be in agreement with expectations.
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Affiliation(s)
- V. Andreev
- Lebedev Physical Institute, Moscow, Russia
| | | | - K. Begzsuren
- Institute of Physics and Technology of the Mongolian Academy of Sciences, Ulaanbaatar, Mongolia
| | | | - V. Bertone
- Department of Physics and Astronomy, Vrije University, De Boelelaan 1081, Amsterdam, The Netherlands
- National Institute for Subatomic Physics (NIKHEF), Science Park 105, Amsterdam, The Netherlands
| | - A. Bolz
- Physikalisches Institut, Universität Heidelberg, Heidelberg, Germany
| | - V. Boudry
- LLR, Ecole Polytechnique, CNRS/IN2P3, Palaiseau, France
| | - G. Brandt
- II. Physikalisches Institut, Universität Göttingen, Göttingen, Germany
| | - V. Brisson
- LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
| | - D. Britzger
- Physikalisches Institut, Universität Heidelberg, Heidelberg, Germany
| | - A. Buniatyan
- School of Physics and Astronomy, University of Birmingham, Birmingham, UK
| | - A. Bylinkin
- Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region Russian Federation
| | - L. Bystritskaya
- Institute for Theoretical and Experimental Physics, Moscow, Russia
| | | | | | - K. Cerny
- Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic
| | | | - J. G. Contreras
- Departamento de Fisica Aplicada, CINVESTAV, Mérida, Yucatán Mexico
| | - J. Cvach
- Institute of Physics, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - J. Currie
- Institute for Particle Physics Phenomenology, Ogden Centre for Fundamental Physics, Durham University, South Road, Durham, UK
| | - J. B. Dainton
- Department of Physics, University of Liverpool, Liverpool, UK
| | - K. Daum
- Fachbereich C, Universität Wuppertal, Wuppertal, Germany
| | - C. Diaconu
- Aix Marseille Université, CNRS/IN2P3, CPPM UMR 7346, 13288 Marseille, France
| | - M. Dobre
- Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering (IFIN-HH), Bucharest, Romania
| | | | | | - S. Egli
- Paul Scherrer Institute, Villigen, Switzerland
| | | | - L. Favart
- Inter-University Institute for High Energies ULB-VUB, Brussels and Universiteit Antwerpen, Antwerp, Belgium
| | - A. Fedotov
- Institute for Theoretical and Experimental Physics, Moscow, Russia
| | | | | | - A. Fomenko
- Lebedev Physical Institute, Moscow, Russia
| | - E. Gabathuler
- Department of Physics, University of Liverpool, Liverpool, UK
| | | | - T. Gehrmann
- Physik-Institut der Universität Zürich, Zurich, Switzerland
| | | | - L. Goerlich
- Institute of Nuclear Physics, Polish Academy of Sciences, 31342 Kraków, Poland
| | | | - M. Gouzevitch
- IPNL, Université Claude Bernard Lyon 1, CNRS/IN2P3, Villeurbanne, France
| | - C. Grab
- Institut für Teilchenphysik, ETH Zürich, Zurich, Switzerland
| | - A. Grebenyuk
- Inter-University Institute for High Energies ULB-VUB, Brussels and Universiteit Antwerpen, Antwerp, Belgium
| | - T. Greenshaw
- Department of Physics, University of Liverpool, Liverpool, UK
| | | | - C. Gwenlan
- Department of Physics, Oxford University, Oxford, UK
| | | | | | - J. Hladkỳ
- Institute of Physics, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - D. Hoffmann
- Aix Marseille Université, CNRS/IN2P3, CPPM UMR 7346, 13288 Marseille, France
| | | | - T. Hreus
- Inter-University Institute for High Energies ULB-VUB, Brussels and Universiteit Antwerpen, Antwerp, Belgium
| | - F. Huber
- Physikalisches Institut, Universität Heidelberg, Heidelberg, Germany
| | - A. Huss
- Institut für Teilchenphysik, ETH Zürich, Zurich, Switzerland
| | - M. Jacquet
- LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
| | - X. Janssen
- Inter-University Institute for High Energies ULB-VUB, Brussels and Universiteit Antwerpen, Antwerp, Belgium
| | - A. W. Jung
- Department of Physics and Astronomy, Purdue University, 525 Northwestern Ave, West Lafayette, IN 47907 USA
| | | | - M. Kapichine
- Joint Institute for Nuclear Research, Dubna, Russia
| | | | - C. Kiesling
- Max-Planck-Institut für Physik, Munich, Germany
| | - M. Klein
- Department of Physics, University of Liverpool, Liverpool, UK
| | | | - R. Kogler
- Institut für Experimentalphysik, Universität Hamburg, Hamburg, Germany
| | - P. Kostka
- Department of Physics, University of Liverpool, Liverpool, UK
| | - J. Kretzschmar
- Department of Physics, University of Liverpool, Liverpool, UK
| | | | | | - M. P. J. Landon
- School of Physics and Astronomy, Queen Mary University of London, London, UK
| | | | - P. Laycock
- Department of Physics, University of Liverpool, Liverpool, UK
| | - A. Lebedev
- Lebedev Physical Institute, Moscow, Russia
| | | | | | | | | | | | | | - H.-U. Martyn
- I. Physikalisches Institut der RWTH, Aachen, Germany
| | - S. J. Maxfield
- Department of Physics, University of Liverpool, Liverpool, UK
| | - A. Mehta
- Department of Physics, University of Liverpool, Liverpool, UK
| | | | - H. Meyer
- Fachbereich C, Universität Wuppertal, Wuppertal, Germany
| | | | - S. Mikocki
- Institute of Nuclear Physics, Polish Academy of Sciences, 31342 Kraków, Poland
| | - A. Morozov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - K. Müller
- Physik-Institut der Universität Zürich, Zurich, Switzerland
| | | | - P. R. Newman
- School of Physics and Astronomy, University of Birmingham, Birmingham, UK
| | | | - J. Niehues
- Physik-Institut der Universität Zürich, Zurich, Switzerland
| | - G. Nowak
- Institute of Nuclear Physics, Polish Academy of Sciences, 31342 Kraków, Poland
| | | | - D. Ozerov
- Paul Scherrer Institute, Villigen, Switzerland
| | - C. Pascaud
- LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
| | - G. D. Patel
- Department of Physics, University of Liverpool, Liverpool, UK
| | | | - A. Petrukhin
- IPNL, Université Claude Bernard Lyon 1, CNRS/IN2P3, Villeurbanne, France
| | - I. Picuric
- Faculty of Science, University of Montenegro, Podgorica, Montenegro
| | | | | | | | - R. Polifka
- Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic
- Department of Physics, University of Toronto, Toronto, ON M5S 1A7 Canada
| | - K. Rabbertz
- Karlsruher Institut für Technologie (KIT), Institut für Experimentelle Teilchenphysik (ETP), Wolfgang-Gaede-Str. 1, Karlsruhe, Germany
| | - V. Radescu
- Department of Physics, Oxford University, Oxford, UK
| | - N. Raicevic
- Faculty of Science, University of Montenegro, Podgorica, Montenegro
| | - T. Ravdandorj
- Institute of Physics and Technology of the Mongolian Academy of Sciences, Ulaanbaatar, Mongolia
| | - P. Reimer
- Institute of Physics, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - E. Rizvi
- School of Physics and Astronomy, Queen Mary University of London, London, UK
| | - P. Robmann
- Physik-Institut der Universität Zürich, Zurich, Switzerland
| | - R. Roosen
- Inter-University Institute for High Energies ULB-VUB, Brussels and Universiteit Antwerpen, Antwerp, Belgium
| | - A. Rostovtsev
- Institute for Information Transmission Problems RAS, Moscow, Russia
| | - M. Rotaru
- Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering (IFIN-HH), Bucharest, Romania
| | - D. Šálek
- Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic
| | - D. P. C. Sankey
- STFC, Rutherford Appleton Laboratory, Didcot, Oxfordshire UK
| | - M. Sauter
- Physikalisches Institut, Universität Heidelberg, Heidelberg, Germany
| | - E. Sauvan
- Aix Marseille Université, CNRS/IN2P3, CPPM UMR 7346, 13288 Marseille, France
- LAPP, Université de Savoie, CNRS/IN2P3, Annecy-le-Vieux, France
| | | | | | - A. Schöning
- Physikalisches Institut, Universität Heidelberg, Heidelberg, Germany
| | | | - S. Shushkevich
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow, Russia
| | | | - P. Sopicki
- Institute of Nuclear Physics, Polish Academy of Sciences, 31342 Kraków, Poland
| | | | - V. Spaskov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - A. Specka
- LLR, Ecole Polytechnique, CNRS/IN2P3, Palaiseau, France
| | | | - B. Stella
- Dipartimento di Fisica, Università di Roma Tre and INFN Roma 3, Rome, Italy
| | - U. Straumann
- Physik-Institut der Universität Zürich, Zurich, Switzerland
| | - M. R. Sutton
- Department of Physics and Astronomy, University of Sussex, Pevensey II, Brighton, UK
| | - T. Sykora
- Inter-University Institute for High Energies ULB-VUB, Brussels and Universiteit Antwerpen, Antwerp, Belgium
- Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic
| | - P. D. Thompson
- School of Physics and Astronomy, University of Birmingham, Birmingham, UK
| | - D. Traynor
- School of Physics and Astronomy, Queen Mary University of London, London, UK
| | - P. Truöl
- Physik-Institut der Universität Zürich, Zurich, Switzerland
| | - I. Tsakov
- Institute for Nuclear Research and Nuclear Energy, Sofia, Bulgaria
| | - B. Tseepeldorj
- Institute of Physics and Technology of the Mongolian Academy of Sciences, Ulaanbaatar, Mongolia
- Ulaanbaatar University, Ulaanbaatar, Mongolia
| | - A. Valkárová
- Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic
| | - C. Vallée
- Aix Marseille Université, CNRS/IN2P3, CPPM UMR 7346, 13288 Marseille, France
| | - P. Van Mechelen
- Inter-University Institute for High Energies ULB-VUB, Brussels and Universiteit Antwerpen, Antwerp, Belgium
| | - Y. Vazdik
- Lebedev Physical Institute, Moscow, Russia
| | - D. Wegener
- Institut für Physik, TU Dortmund, Dortmund, Germany
| | | | - J. Žáček
- Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic
| | - Z. Zhang
- LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
| | | | | | - F. Zomer
- LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
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Abt I, Adams M, Agari M, Albrecht H, Aleksandrov A, Amaral V, Amorim A, Aplin SJ, Aushev V, Bagaturia Y, Balagura V, Bargiotti M, Barsukova O, Bastos J, Batista J, Bauer C, Bauer TS, Belkov A, Belkov A, Belotelov I, Bertin A, Bobchenko B, Böcker M, Bogatyrev A, Bohm G, Bräuer M, Bruinsma M, Bruschi M, Buchholz P, Buran T, Carvalho J, Conde P, Cruse C, Dam M, Danielsen KM, Danilov M, Castro SD, Deppe H, Dong X, Dreis HB, Egorytchev V, Ehret K, Eisele F, Emeliyanov D, Essenov S, Fabbri L, Faccioli P, Feuerstack-Raible M, Flammer J, Fominykh B, Funcke M, Garrido L, Giacobbe B, Gläss J, Goloubkov D, Golubkov Y, Golutvin A, Golutvin I, Gorbounov I, Gorisek A, Gouchtchine O, Goulart DC, Gradl S, Gradl W, Grimaldi F, Groth-Jensen J, Guilitsky Y, Hansen JD, Hernández JM, Hofmann W, Hott T, Hulsbergen W, Husemann U, Igonkina O, Ispiryan M, Jagla T, Jiang C, Kapitza H, Karabekyan S, Karpenko N, Keller S, Kessler J, Khasanov F, Kiryushin Y, Klinkby E, Knöpfle KT, Kolanoski H, Korpar S, Krauss C, Kreuzer P, Krizan P, Krücker D, Kupper S, Kvaratskheliia T, Lanyov A, Lau K, Lewendel B, Lohse T, Lomonosov B, Männer R, Masciocchi S, Massa I, Matchikhilian I, Medin G, Medinnis M, Mevius M, Michetti A, Mikhailov Y, Mizuk R, Muresan R, Zur Nedden M, Negodaev M, Nörenberg M, Nowak S, Núñez Pardo de Vera MT, Ouchrif M, Ould-Saada F, Padilla C, Peralta D, Pernack R, Pestotnik R, Piccinini M, Pleier MA, Poli M, Popov V, Pose A, Pose D, Prystupa S, Pugatch V, Pylypchenko Y, Pyrlik J, Reeves K, Ressing D, Rick H, Riu I, Robmann P, Rostovtseva I, Rybnikov V, Sánchez F, Sbrizzi A, Schmelling M, Schmidt B, Schreiner A, Schröder H, Schwartz AJ, Schwarz AS, Schwenninger B, Schwingenheuer B, Sciacca F, Semprini-Cesari N, Shuvalov S, Silva L, Smirnov K, Sözüer L, Solunin S, Somov A, Somov S, Spengler J, Spighi R, Spiridonov A, Stanovnik A, Staric M, Stegmann C, Subramania HS, Symalla M, Tikhomirov I, Titov M, Tsakov I, Uwer U, van Eldik C, Vassiliev Y, Villa M, Vitale A, Vukotic I, Wahlberg H, Walenta AH, Walter M, Wang JJ, Wegener D, Werthenbach U, Wolters H, Wurth R, Wurz A, Zaitsev Y, Zavertyaev M, Zech G, Zeuner T, Zhelezov A, Zheng Z, Zimmermann R, Zivko T, Zoccoli A. Limits for the central production of Theta+ and Xi(--)pentaquarks in 920-GeV pA collisions. Phys Rev Lett 2004; 93:212003. [PMID: 15600999 DOI: 10.1103/physrevlett.93.212003] [Citation(s) in RCA: 9] [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: 08/12/2004] [Indexed: 05/24/2023]
Abstract
We have searched for Theta+(1540) and Xi(--)(1862) pentaquark candidates in proton-induced reactions on C, Ti, and W targets at midrapidity and square root of s = 41.6 GeV. In 2 x 10(8) inelastic events we find no evidence for narrow (sigma approximately 5 MeV) signals in the Theta+ --> pK0(S) and Xi(--) --> Xi- pi- channels; our 95% C.L. upper limits (UL) for the inclusive production cross section times branching fraction B dsigma/dy/(y approximately 0) are (4-16) mub/N for a Theta+ mass between 1521 and 1555 MeV, and 2.5 mub/N for the Xi(--). The UL of the yield ratio of Theta+/Lambda(1520) < (3-12)% is significantly lower than model predictions. Our UL of B Xi(--)/Xi(1530)0 < 4% is at variance with the results that have provided the first evidence for the Xi(--).
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Affiliation(s)
- I Abt
- Max-Planck-Institut für Physik, Werner-Heisenberg-Institut, D-80805 Munich, Germany
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