Neutral pion and eta meson production in proton-proton collisions at root s=0.9 TeV and root s=7 TeV

Abelev B., Abrahantes Quintana A., Adamova D., Adare A. M., Aggarwal M. M., Aglieri Rinella G., ...More

PHYSICS LETTERS B, vol.717, no.1-3, pp.162-172, 2012 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 717 Issue: 1-3
  • Publication Date: 2012
  • Doi Number: 10.1016/j.physletb.2012.09.015
  • Journal Name: PHYSICS LETTERS B
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.162-172
  • Keywords: Hadron production, Inclusive spectra, Comparison with QCD, CROSS-SECTIONS, PI(0), ALICE
  • Bursa Uludag University Affiliated: No


The first measurements of the invariant differential cross sections of inclusive pi(0) and eta meson production at mid-rapidity in proton-proton collisions root s = 0.9 TeV and root s = 7 TeV are reported. The pi(0) measurement covers the ranges 0.4 < p(T) < 7 GeV/c and 0.3 < p(T) < 25 GeV/c for these two energies, respectively. The production of eta mesons was measured at root s = 7 TeV in the range 0.4 < p(T) < 15 GeV/c. Next-to-Leading Order perturbative QCD calculations, which are consistent with the pi(0) spectrum at root s = 0.9 TeV, overestimate those of pi(0) and eta mesons at root s = 7 TeV, but agree with the measured eta/pi(0) ratio at root s = 7 TeV. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.