The first measurements of the invariant differential cross sections of inclusive π0 and η meson production at mid-rapidity in proton-proton collisions at s√=0.9 TeV and s√=7 TeV are reported. The π0 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 π0 spectrum at √s=0.9 TeV, overestimate those of π0 and η mesons at √s=7 TeV, but agree with the measured η/π0 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.
BEOLE', Stefania;BERZANO, DARIO CARLO DOMENICO;BIANCHI, LIVIO;CORRALES MORALES, YASSER;FERRETTI, Alessandro;GAGLIARDI, Martino;GALLIO, Mauro;INNOCENTI, GIAN MICHELE;MARCHISONE, MASSIMILIANO;MASERA, Massimo;MILANO, LEONARDO;ORTONA, GIACOMO;VERCELLIN, Ermanno;
2012-01-01
Abstract
The first measurements of the invariant differential cross sections of inclusive π0 and η meson production at mid-rapidity in proton-proton collisions at s√=0.9 TeV and s√=7 TeV are reported. The π0 measurement covers the ranges 0.4File in questo prodotto:
File | Dimensione | Formato | |
---|---|---|---|
neutral_pion_eta_2012.pdf
Accesso riservato
Tipo di file:
POSTPRINT (VERSIONE FINALE DELL’AUTORE)
Dimensione
720.09 kB
Formato
Adobe PDF
|
720.09 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.