Study of the inclusive production of charged pions, kaons, and protons in pp collisions at √s = 0.9,2.76 and 7 TeV

Chatrchyan S., Khachatryan V., Sirunyan A., Tumasyan A., Adam W., Aguilo E., ...More

European Physical Journal C, vol.72, no.10, pp.1-37, 2012 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 72 Issue: 10
  • Publication Date: 2012
  • Doi Number: 10.1140/epjc/s10052-012-2164-1
  • Journal Name: European Physical Journal C
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1-37
  • Yıldız Technical University Affiliated: No


Spectra of identified charged hadrons are measured in pp collisions at the LHC for √s = 0.9,2.76, and 7 TeV. Charged pions, kaons, and protons in the transverse-momentum range pT≈0. 1-1. 7 GeV/c and for rapidities {pipe}y{pipe}<1 are identified via their energy loss in the CMS silicon tracker. The average pT increases rapidly with the mass of the hadron and the event charged-particle multiplicity, independently of the center-of-mass energy. The fully corrected pT spectra and integrated yields are compared to various tunes of the Pythia 6 and Pythia 8 event generators. © 2012 CERN for the benefit of the CMS collaboration.