Measurement of pion, kaon and proton production in proton-proton collisions at $\sqrt{s}=7$ TeV

J. Adam , G. Conesa Balbastre (1) , J. Faivre (1) , C. Furget (1) , R. Guernane (1) , S. Kox (1) , J.S. Real (1) , C. Silvestre (1) , A. Vauthier (1) , R. Vernet (2) , I. Belikov (3) , B. Hippolyte (3) , C. Kuhn (3) , A. Maire (3) , L. Molnar (3) , C. Roy (3) , X. Sanchez Castro (3) , Laurent Aphecetche (4) , Guillaume Batigne (4) , B. Erazmus (4) , Magali Estienne (4) , Marie Germain (4) , J. Martin Blanco (4) , Gines Martinez Garcia (4) , L. Massacrier (4) , D.A. Moreira De Godoy (4) , A. Morreale (4) , Philippe Pillot (4) , L. Ronflette (4) , Y. Schutz (4) , Alexandre Shabetai (4) , Diego Stocco (4) , M. Wang (4) , J. Zhu (4) , A. Baldisseri (5) , V. Barret (6) , N. Bastid (6) , A. Batista Camejo (6) , H. Borel (5) , J. Castillo Castellanos (5) , C. Cheshkov (7) , B. Cheynis (7) , P. Crochet (6) , L. Ducroux (7) , P. Dupieux (6) , J.-Y. Grossiord (7) , A. Lardeux (4) , S. Li (6) , H. Pereira Da Costa (5) , S. Porteboeuf-Houssais (6) , A. Rakotozafindrabe , P. Rosnet (6) , B. Teyssier (7) , R. Tieulent (7) , A. Uras (7) , X. Lopez (6) , F. Manso (6) , B. Vulpescu (6) , Z. Conesa Del Valle (8) , I. Das (8) , B. Espagnon (8) , C. Hadjidakis (8) , I. Lakomov (8) , C. Suire (8) , J. D. Tapia Takaki (8) , L. Valencia Palomo (8)

1 LPSC - Laboratoire de Physique Subatomique et de Cosmologie
2 CC-IN2P3 - Centre de Calcul de l'IN2P3
3 IPHC - Institut Pluridisciplinaire Hubert Curien
4 SUBATECH - Laboratoire SUBATECH Nantes
5 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers
6 LPC - Laboratoire de Physique Corpusculaire - Clermont-Ferrand
7 IPNL - Institut de Physique Nucléaire de Lyon
8 IPNO - Institut de Physique Nucléaire d'Orsay

The measurement of primary $\pi^{\pm}$, K$^{\pm}$, p and $\overline{p}$ production at mid-rapidity ($|y| <$ 0.5) in proton-proton collisions at $\sqrt{s} = 7$ TeV performed with ALICE (A Large Ion Collider Experiment) at the Large Hadron Collider (LHC) is reported. Particle identification is performed using the specific ionization energy loss and time-of-flight information, the ring-imaging Cherenkov technique and the kink-topology identification of weak decays of charged kaons. Transverse momentum spectra are measured from 0.1 up to 3 GeV/$c$ for pions, from 0.2 up to 6 GeV/$c$ for kaons and from 0.3 up to 6 GeV/$c$ for protons. The measured spectra and particle ratios are compared with QCD-inspired models, tuned to reproduce also the earlier measurements performed at the LHC. Furthermore, the integrated particle yields and ratios as well as the average transverse momenta are compared with results at lower collision energies.

Domaines: Physique Nucléaire Expérimentale [nucl-ex]; Physique des Hautes Energies - Expérience [hep-ex]

J. Adam, G. Conesa Balbastre, J. Faivre, C. Furget, R. Guernane, et al.. Measurement of pion, kaon and proton production in proton-proton collisions at $\sqrt{s}=7$ TeV. European Physical Journal C: Particles and Fields, 2015, 75 (5), pp.226. ⟨10.1140/epjc/s10052-015-3422-9⟩. ⟨in2p3-01138470⟩