Production of Neutral Pions and Eta-mesons in pp Collisions Measured with ALICE

Abstract

Invariant cross sections for neutral pions and eta mesons in pp collisions at sqrt(s) = 0.9, 2.76, and 7 TeV were measured by the ALICE detector at the Large Hadron Collider. Next-to-leading order (NLO) perturbative QCD calculations describe the pi0 and eta spectra at 0.9 TeV, but overestimate the measured cross sections at 2.76 TeV and 7 TeV. The measured eta/pi0 ratio is consistent with mT scaling at 2.76 TeV. At 7 TeV indications for a violation of mT scaling were found.

4 pages, 2 figures, to appear in the proceedings of the XXII International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions, Quark Matter 2011, Annecy

References in corpus (4)

• Global analysis of fragmentation functions for pions and kaons and their uncertainties
• Global Analysis of Fragmentation Functions for Eta Mesons
• Pi0 and Eta measurement with photon conversions in ALICE in proton-proton collisions at sqrt(s) = 7 TeV
• Suppression of neutral pion production at large transverse momentum measured with the ALICE experiment in Pb-Pb collisions at $\sqrt{s_{NN}}=2.76$ TeV

Cited by in corpus (5)

• Light vector meson production in pp collisions at $\sqrt{s}$ = 7 TeV
• Particle Production at Large Transverse Momentum with ALICE
• Suppression of neutral pion production at large transverse momentum measured with the ALICE experiment in Pb-Pb collisions at $\sqrt{s_{NN}}=2.76$ TeV
• Quenching of hadron and photon spectra in heavy-ion collisions from RHIC to LHC
• Neutral meson production in pp and Pb-Pb collisions at LHC