High-pT pion and kaon production in relativistic nuclear collisions

Yi Zhang, George Fai, G. Papp, G. Barnaföldi, P. Lévai

Research output: Contribution to journalArticle

125 Citations (Scopus)

Abstract

High-pT pion and kaon production is studied in relativistic proton-proton, proton-nucleus, and nucleus-nucleus collisions in a wide energy range. Cross sections are calculated based on perturbative QCD, augmented by a phenomenological transverse-momentum distribution of partons ("intrinsic kT"). An energy dependent width of the transverse-momentum distribution is extracted from pion and charged hadron production data in proton-proton/proton-antiproton collisions. Effects of multiscattering and shadowing in the strongly interacting medium are taken into account. Enhancement of the transverse-momentum width is introduced and parameterized to explain the Cronin effect. In collisions between heavy nuclei, the model overpredicts central pion production cross sections (more significantly at higher energies), hinting at the presence of jet quenching. Predictions are made for proton-nucleus and nucleus-nucleus collisions at relativistic heavy ion collider energies.

Original languageEnglish
Pages (from-to)349031-3490315
Number of pages3141285
JournalPhysical Review C - Nuclear Physics
Volume65
Issue number3
Publication statusPublished - Mar 2002

Fingerprint

kaon production
pions
collisions
protons
nuclei
transverse momentum
energy
cross sections
heavy nuclei
antiprotons
partons
heavy ions
quantum chromodynamics
quenching
augmentation
predictions

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics

Cite this

High-pT pion and kaon production in relativistic nuclear collisions. / Zhang, Yi; Fai, George; Papp, G.; Barnaföldi, G.; Lévai, P.

In: Physical Review C - Nuclear Physics, Vol. 65, No. 3, 03.2002, p. 349031-3490315.

Research output: Contribution to journalArticle

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