Intrinsic parton transverse momentum in next-to-leading-order pion production

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dc.creatorPapp, G.
dc.creatorBarnafoldi, G. G.
dc.creatorLevai, P.
dc.creatorFai, G.
dc.date2002-12-17
dc.date2003-07-15
dc.date.accessioned2026-07-07T03:48:52Z
dc.date.available2026-07-07T03:48:52Z
dc.descriptionWe study pion production in proton-proton collisions within a pQCD-improved parton model in next-to-leading order augmented by intrinsic transverse momentum ($k_\perp$) of the partons. We find the introduction of $k_\perp$ necessary to reproduce the experimental data in the CERN SPS to RHIC energy range. We study the influence of intrinsic $k_\perp$ on the so-called $K$ factor, the ratio of the NLO cross section to the Born term. A strong $p_T$ dependence is seen, especially in the 3-6 GeV transverse momentum region of the outgoing pion, where nuclear effects (e.g. the Cronin effect) play an important role.
dc.description5 pages with 4 PS figures included
dc.identifierhttps://arxiv.org/abs/hep-ph/0212249
dc.identifierhttp://arxiv.org/abs/hep-ph/0212249
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/42187
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Theory
dc.titleIntrinsic parton transverse momentum in next-to-leading-order pion production
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