Accessing tri-gluon correlations in the nucleon via the single spin asymmetry in open charm production

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dc.creatorKang, Zhong-Bo
dc.creatorQiu, Jian-Wei
dc.creatorVogelsang, Werner
dc.creatorYuan, Feng
dc.date2008-10-18
dc.date.accessioned2026-07-07T12:22:36Z
dc.date.available2026-07-07T12:22:36Z
dc.descriptionWe calculate the single transverse-spin asymmetry for open charm production in $pp$ collisions within the QCD collinear factorization approach. We include contributions from both twist-three quark-gluon and tri-gluon correlation functions. We find that the quark-gluon correlation functions alone generate only a very small asymmetry for open charm production in the kinematic region of current interest at RHIC, so that the observation of any significant single-spin asymmetry would be a clear indication of the presence of tri-gluon correlations inside a polarized proton. We furthermore demonstrate that the tri-gluon contribution could be very different for the production of $D$ and $\bar{D}$ mesons. These features make the single spin asymmetry in open charm production in polarized $pp$ collisions at RHIC an excellent probe of tri-gluon correlation functions.
dc.description10 pages, 7 figures
dc.identifierhttps://arxiv.org/abs/0810.3333
dc.identifierhttp://arxiv.org/abs/0810.3333
dc.identifierPhys.Rev.D78:114013,2008
dc.identifierdoi:10.1103/PhysRevD.78.114013
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/213705
dc.subjectHigh Energy Physics - Phenomenology
dc.titleAccessing tri-gluon correlations in the nucleon via the single spin asymmetry in open charm production
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