Single transverse-spin asymmetry in high transverse momentum pion production in pp collisions

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dc.creatorKouvaris, Chris
dc.creatorQiu, Jian-Wei
dc.creatorVogelsang, Werner
dc.creatorYuan, Feng
dc.date2006-09-22
dc.date.accessioned2026-07-07T11:05:46Z
dc.date.available2026-07-07T11:05:46Z
dc.descriptionWe study the single-spin (left-right) asymmetry in single-inclusive pion production in hadronic scattering. This asymmetry is power-suppressed in the transverse momentum of the produced pion and can be analyzed in terms of twist-three parton correlation functions in the proton. We present new calculations of the corresponding partonic hard-scattering functions that include the so-called "non-derivative" contributions not previously considered in the literature. We find a remarkably simple structure of the results. We also present a brief phenomenological study of the spin asymmetry, taking into account data from fixed-target scattering and also the latest information available from RHIC. We make additional predictions that may be tested experimentally at RHIC.
dc.description32 pages, 14 figures
dc.identifierhttps://arxiv.org/abs/hep-ph/0609238
dc.identifierhttp://arxiv.org/abs/hep-ph/0609238
dc.identifierPhys.Rev.D74:114013,2006
dc.identifierdoi:10.1103/PhysRevD.74.114013
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/189309
dc.subjectHigh Energy Physics - Phenomenology
dc.titleSingle transverse-spin asymmetry in high transverse momentum pion production in pp collisions
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