Examination of direct-photon and pion production in proton-nucleon collisions

Abstract

We present a study of inclusive direct-photon and pion production in hadronic interactions, focusing on a comparison of the ratio of gamma/pi0 yields with expectations from next-to-leading order perturbative QCD (NLO pQCD). We also examine the impact of a phenomenological model involving k_T smearing (which approximates effects of additional soft-gluon emission) on absolute predictions for photon and pion production and their ratio.

arXiv comment20 pages, 12 figures. Minor changes in wording and in figure 2

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Cited by in corpus (15)

• Mid-Rapidity Neutral Pion Production in Proton-Proto Collisions at sqrt(s_NN) = 200 GeV
• High-p_T pion and kaon production in relativistic nuclear collisions
• Direct Photons from Relativistic Heavy-Ion Collisions
• Measurement of the Isolated Photon Cross Section in p-pbar Collisions at sqrt{s}=1.96 TeV
• Probing the QCD equation of state with thermal photons in nucleus-nucleus collisions at RHIC
• Production of pizero and eta mesons at large transverse momenta in pp and pBe interactions at 530 and 800 GeV/c
• Study of the effective transverse momentum of partons in the proton using prompt photons in photoproduction at HERA
• Measurement of direct photon production at Tevatron fixed target energies
• Prompt photons at RHIC
• Enhanced Minijet Production in $A-A$ Collisions from Gluons with Large Transverse Momenta
• Production of pizero and eta mesons at large transverse momenta in pi-p and pi-Be interactions at 515 GeV/c
• Probing Gluons in Nuclei: the Case of ${\eta }^{\prime }$
• Polarized Gluon Distribution Function from ${\eta }^{\prime }$ Production
• A QCD Survey: 0 < Q**2 < 10**5 Gev**2
• Neutral pion production in Au+Au collisions at RHIC