Measurement of the inelastic pp cross-section at a centre-of-mass energy of s√=7 TeV

R. Aaij 1 Y. Amhis 2 S. Barsuk 2 M. Borsato 2 O. Kochebina 2 J. Lefrançois 2 F. Machefert 2 A. Martin Sanchez 2 Marie Nicol 2 P. Robbe 2 M.-H. Schune 2 M. Teklishyn 2 A. Vallier 2 B. Viaud 2 L. Beaucourt 3 M. Chefdeville 3 D. Decamp 3 N. Déléage 3 Ph. Ghez 3 J.-P. Lees 3 J.F. Marchand 3 M.-N. Minard 3 B. Pietrzyk 3 W. Qian 3 S. T'Jampens 3 V. Tisserand 3 E. Tournefier 3 S. Akar 4 E. Aslanides 4 J. Cogan 4 W. Kanso 4 R. Legac 4 O. Leroy 4 G. Mancinelli 4 A. Mordà 4 M. Perrin-Terrin 4 J. Serrano 4 A. Tsaregorodtsev 4
1 Nikhef - National Institute for Subatomic Physics
2 LAL - Laboratoire de l'Accélérateur Linéaire
3 LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules - Laboratoire d'Annecy de Physique des Particules
4 CPPM - Centre de Physique des Particules de Marseille
Abstract : The cross-section for inelastic proton-proton collisions, with at least one prompt long-lived charged particle of transverse momentum pT>0.2 GeV/c in the pseudorapidity range 2.0<η<4.5, is measured by the LHCb experiment at a centre-of-mass energy of s√=7 TeV. The cross-section in this kinematic range is determined to be σaccinel=55.0±2.4 mb within the spectrometer acceptance with an experimental uncertainty that is dominated by systematic contributions. Extrapolation to the full phase space, using PYTHIA 6, yields σinel=66.9±2.9±4.4 mb, where the first uncertainty is experimental and the second is due to the extrapolation.
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Article dans une revue
Journal of High Energy Physics, Springer, 2015, 2015 (02), pp.129. 〈10.1007/JHEP02(2015)129〉
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http://hal.in2p3.fr/in2p3-01094588
Contributeur : Sabine Starita <>
Soumis le : vendredi 12 décembre 2014 - 15:40:38
Dernière modification le : jeudi 15 mars 2018 - 09:44:05

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R. Aaij, Y. Amhis, S. Barsuk, M. Borsato, O. Kochebina, et al.. Measurement of the inelastic pp cross-section at a centre-of-mass energy of s√=7 TeV. Journal of High Energy Physics, Springer, 2015, 2015 (02), pp.129. 〈10.1007/JHEP02(2015)129〉. 〈in2p3-01094588〉

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