|
1
|
Antchev G, Aspell P, Atanassov I, Avati V, Baechler J, Berardi V, Berretti M, Bossini E, Bottigli U, Bozzo M, Brücken E, Buzzo A, Cafagna FS, Catanesi MG, Covault C, Csanád M, Csörgő T, Deile M, Eggert K, Eremin V, Ferro F, Fiergolski A, Garcia F, Giani S, Greco V, Grzanka L, Heino J, Hilden T, Karev A, Kašpar J, Kopal J, Kundrát V, Kurvinen K, Lami S, Latino G, Lauhakangas R, Leszko T, Lippmaa E, Lippmaa J, Lokajíček M, Losurdo L, Lo Vetere M, Lucas Rodríguez F, Macrí M, Mäki T, Mercadante A, Minafra N, Minutoli S, Nemes F, Niewiadomski H, Oliveri E, Oljemark F, Orava R, Oriunno M, Österberg K, Palazzi P, Procházka J, Quinto M, Radermacher E, Radicioni E, Ravotti F, Robutti E, Ropelewski L, Ruggiero G, Saarikko H, Scribano A, Smajek J, Snoeys W, Sziklai J, Taylor C, Turini N, Vacek V, Vítek M, Welti J, Whitmore J, Wyszkowski P. Double diffractive cross-section measurement in the forward region at the LHC. Phys Rev Lett 2013; 111:262001. [PMID: 24483791 DOI: 10.1103/physrevlett.111.262001] [Citation(s) in RCA: 4] [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: 08/29/2013] [Revised: 10/01/2013] [Indexed: 06/03/2023]
Abstract
The first double diffractive cross-section measurement in the very forward region has been carried out by the TOTEM experiment at the LHC with a center-of-mass energy of sqrt[s]=7 TeV. By utilizing the very forward TOTEM tracking detectors T1 and T2, which extend up to |η|=6.5, a clean sample of double diffractive pp events was extracted. From these events, we determined the cross section σDD=(116±25) μb for events where both diffractive systems have 4.7<|η|min<6.5.
Collapse
Affiliation(s)
- G Antchev
- INRNE-BAS, Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
| | | | - I Atanassov
- INRNE-BAS, Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria and CERN, 1211 Geneva, Switzerland
| | - V Avati
- CERN, 1211 Geneva, Switzerland
| | | | - V Berardi
- INFN Sezione di Bari, 70126 Bari, Italy and Dipartimento Interateneo di Fisica di Bari, 70126 Bari, Italy
| | - M Berretti
- INFN Sezione di Pisa, 56127 Pisa, Italy and Università degli Studi di Siena and Gruppo Collegato INFN di Siena, 53100 Siena, Italy
| | - E Bossini
- INFN Sezione di Pisa, 56127 Pisa, Italy and Università degli Studi di Siena and Gruppo Collegato INFN di Siena, 53100 Siena, Italy
| | - U Bottigli
- Università degli Studi di Siena and Gruppo Collegato INFN di Siena, 53100 Siena, Italy
| | - M Bozzo
- INFN Sezione di Genova, 16146 Genova, Italy and Università degli Studi di Genova, 16146 Genova, Italy
| | - E Brücken
- Helsinki Institute of Physics, 00014 Helsinki, Finland and Department of Physics, University of Helsinki, 00014 Helsinki, Finland
| | - A Buzzo
- INFN Sezione di Genova, 16146 Genova, Italy
| | | | | | - C Covault
- Case Western Reserve University, Department of Physics, Cleveland, Ohio 44106, USA
| | - M Csanád
- MTA Wigner Research Center, RMKI, 1525 Budapest, Hungary
| | - T Csörgő
- MTA Wigner Research Center, RMKI, 1525 Budapest, Hungary
| | - M Deile
- CERN, 1211 Geneva, Switzerland
| | - K Eggert
- Case Western Reserve University, Department of Physics, Cleveland, Ohio 44106, USA
| | - V Eremin
- Ioffe Physical-Technical Institute of Russian Academy of Sciences, 194021 St. Petersburg, Russian Federation
| | - F Ferro
- INFN Sezione di Genova, 16146 Genova, Italy
| | - A Fiergolski
- INFN Sezione di Bari, 70126 Bari, Italy and Warsaw University of Technology, 00662 Warsaw, Poland
| | - F Garcia
- Helsinki Institute of Physics, 00014 Helsinki, Finland
| | - S Giani
- CERN, 1211 Geneva, Switzerland
| | - V Greco
- Università degli Studi di Siena and Gruppo Collegato INFN di Siena, 53100 Siena, Italy
| | | | - J Heino
- Helsinki Institute of Physics, 00014 Helsinki, Finland
| | - T Hilden
- Helsinki Institute of Physics, 00014 Helsinki, Finland and Department of Physics, University of Helsinki, 00014 Helsinki, Finland
| | - A Karev
- CERN, 1211 Geneva, Switzerland
| | - J Kašpar
- CERN, 1211 Geneva, Switzerland and Institute of Physics of the Academy of Sciences of the Czech Republic, 18221 Praha, Czech Republic
| | - J Kopal
- CERN, 1211 Geneva, Switzerland and Institute of Physics of the Academy of Sciences of the Czech Republic, 18221 Praha, Czech Republic
| | - V Kundrát
- Institute of Physics of the Academy of Sciences of the Czech Republic, 18221 Praha, Czech Republic
| | - K Kurvinen
- Helsinki Institute of Physics, 00014 Helsinki, Finland
| | - S Lami
- INFN Sezione di Pisa, 56127 Pisa, Italy
| | - G Latino
- Università degli Studi di Siena and Gruppo Collegato INFN di Siena, 53100 Siena, Italy
| | - R Lauhakangas
- Helsinki Institute of Physics, 00014 Helsinki, Finland
| | - T Leszko
- Warsaw University of Technology, 00662 Warsaw, Poland
| | - E Lippmaa
- National Institute of Chemical Physics and Biophysics NICPB, 12618 Tallinn, Estonia
| | - J Lippmaa
- National Institute of Chemical Physics and Biophysics NICPB, 12618 Tallinn, Estonia
| | - M Lokajíček
- Institute of Physics of the Academy of Sciences of the Czech Republic, 18221 Praha, Czech Republic
| | - L Losurdo
- Università degli Studi di Siena and Gruppo Collegato INFN di Siena, 53100 Siena, Italy
| | - M Lo Vetere
- INFN Sezione di Genova, 16146 Genova, Italy and Università degli Studi di Genova, 16146 Genova, Italy
| | | | - M Macrí
- INFN Sezione di Genova, 16146 Genova, Italy
| | - T Mäki
- Helsinki Institute of Physics, 00014 Helsinki, Finland
| | | | - N Minafra
- INFN Sezione di Bari, 70126 Bari, Italy and Dipartimento Interateneo di Fisica di Bari, 70126 Bari, Italy
| | - S Minutoli
- CERN, 1211 Geneva, Switzerland and INFN Sezione di Genova, 16146 Genova, Italy
| | - F Nemes
- MTA Wigner Research Center, RMKI, 1525 Budapest, Hungary
| | - H Niewiadomski
- Università degli Studi di Siena and Gruppo Collegato INFN di Siena, 53100 Siena, Italy
| | - E Oliveri
- Università degli Studi di Siena and Gruppo Collegato INFN di Siena, 53100 Siena, Italy
| | - F Oljemark
- Helsinki Institute of Physics, 00014 Helsinki, Finland and Department of Physics, University of Helsinki, 00014 Helsinki, Finland
| | - R Orava
- Helsinki Institute of Physics, 00014 Helsinki, Finland and Department of Physics, University of Helsinki, 00014 Helsinki, Finland
| | | | - K Österberg
- Helsinki Institute of Physics, 00014 Helsinki, Finland and Department of Physics, University of Helsinki, 00014 Helsinki, Finland
| | - P Palazzi
- Università degli Studi di Siena and Gruppo Collegato INFN di Siena, 53100 Siena, Italy
| | - J Procházka
- Institute of Physics of the Academy of Sciences of the Czech Republic, 18221 Praha, Czech Republic
| | - M Quinto
- INFN Sezione di Bari, 70126 Bari, Italy and Dipartimento Interateneo di Fisica di Bari, 70126 Bari, Italy
| | - E Radermacher
- Università degli Studi di Siena and Gruppo Collegato INFN di Siena, 53100 Siena, Italy
| | | | | | - E Robutti
- INFN Sezione di Genova, 16146 Genova, Italy
| | | | | | - H Saarikko
- Helsinki Institute of Physics, 00014 Helsinki, Finland and Department of Physics, University of Helsinki, 00014 Helsinki, Finland
| | - A Scribano
- Università degli Studi di Siena and Gruppo Collegato INFN di Siena, 53100 Siena, Italy
| | | | | | - J Sziklai
- MTA Wigner Research Center, RMKI, 1525 Budapest, Hungary
| | - C Taylor
- Case Western Reserve University, Department of Physics, Cleveland, Ohio 44106, USA
| | - N Turini
- Università degli Studi di Siena and Gruppo Collegato INFN di Siena, 53100 Siena, Italy
| | - V Vacek
- Czech Technical University, 11519 Praha, Czech Republic
| | - M Vítek
- Czech Technical University, 11519 Praha, Czech Republic
| | - J Welti
- Helsinki Institute of Physics, 00014 Helsinki, Finland and Department of Physics, University of Helsinki, 00014 Helsinki, Finland
| | - J Whitmore
- Penn State University, Department of Physics, University Park, Pennsylvania 16802, USA
| | | |
Collapse
|
|
2
|
Antchev G, Aspell P, Atanassov I, Avati V, Baechler J, Berardi V, Berretti M, Bossini E, Bottigli U, Bozzo M, Brücken E, Buzzo A, Cafagna FS, Calicchio M, Catanesi MG, Covault C, Csanád M, Csörgő T, Deile M, Doubek M, Eggert K, Eremin V, Ferretti R, Ferro F, Fiergolski A, Garcia F, Giani S, Greco V, Grzanka L, Heino J, Hilden T, Intonti RA, Kašpar J, Kopal J, Kundrát V, Kurvinen K, Lami S, Latino G, Lauhakangas R, Leszko T, Lippmaa E, Lokajíček M, Lo Vetere M, Lucas Rodríguez F, Macrí M, Mäki T, Mercadante A, Minafra N, Minutoli S, Nemes F, Niewiadomski H, Oliveri E, Oljemark F, Orava R, Oriunno M, Österberg K, Palazzi P, Procházka J, Quinto M, Radermacher E, Radicioni E, Ravotti F, Robutti E, Ropelewski L, Ruggiero G, Saarikko H, Santroni A, Scribano A, Smajek J, Snoeys W, Sziklai J, Taylor C, Turini N, Vacek V, Vítek M, Welti J, Whitmore J, Wyszkowski P. Luminosity-independent measurement of the proton-proton total cross section at √s=8 TeV. Phys Rev Lett 2013; 111:012001. [PMID: 23862993 DOI: 10.1103/physrevlett.111.012001] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2012] [Indexed: 06/02/2023]
Abstract
The TOTEM collaboration has measured the proton-proton total cross section at √s=8 TeV using a luminosity-independent method. In LHC fills with dedicated beam optics, the Roman pots have been inserted very close to the beam allowing the detection of ~90% of the nuclear elastic scattering events. Simultaneously the inelastic scattering rate has been measured by the T1 and T2 telescopes. By applying the optical theorem, the total proton-proton cross section of (101.7±2.9) mb has been determined, well in agreement with the extrapolation from lower energies. This method also allows one to derive the luminosity-independent elastic and inelastic cross sections: σ(el)=(27.1±1.4) mb; σ(inel)=(74.7±1.7) mb.
Collapse
Affiliation(s)
- G Antchev
- INRNE-BAS, Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|