The first measurements of the invariant differential cross sections of inclusive pi0 and η meson production at mid-rapidity in proton–proton collisions at √s=0.9 TeV and √s=7 TeV are reported. The pi0 measurement covers the ranges 0.4<pT<7 GeV/c and 0.3<pT<25 GeV/c for these two energies, respectively. The production of η mesons was measured at √s=7 TeV in the range 0.4<pT<15 GeV/c. Next-to-Leading Order perturbative QCD calculations, which are consistent with the pi0 spectrum at √s=0.9 TeV, overestimate those of pi0 and η mesons at √s=7 TeV, but agree with the measured η/pi0 ratio at √s=7 TeV.

Neutral pion and η meson production in proton-proton collisions at sqrt{s}=0.9 TeV and sqrt{s}=7 TeV

DE CARO, ANNALISA;DE GRUTTOLA, DANIELE;DE PASQUALE, Salvatore;FUSCO GIRARD, Mario;PAGANO, PAOLA;VIRGILI, Tiziano;
2012-01-01

Abstract

The first measurements of the invariant differential cross sections of inclusive pi0 and η meson production at mid-rapidity in proton–proton collisions at √s=0.9 TeV and √s=7 TeV are reported. The pi0 measurement covers the ranges 0.4
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11386/3881986
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