Single Transverse-Spin Asymmetry in Hadronic Dijet Production

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dc.creatorQiu, Jian-Wei
dc.creatorVogelsang, Werner
dc.creatorYuan, Feng
dc.date2007-06-08
dc.date.accessioned2026-07-07T10:56:08Z
dc.date.available2026-07-07T10:56:08Z
dc.descriptionWe study the single transverse-spin asymmetry for dijet production in hadronic collisions in both the collinear QCD factorization approach and the Brodsky-Hwang-Schmidt model. We show that a nonvanishing asymmetry is generated by both initial-state and final-state interactions, and that the final-state interactions dominate. We find that in the leading kinematic region where the transverse momentum imbalance of the two jets, q_\perp = P_{1\perp}+P_{2\perp}, is much less than the momentum of either jet, the contribution from the lowest non-trivial perturbative order to both the spin-averaged and the spin-dependent dijet cross sections can be factorized into a hard part that is a function only of the averaged jet momentum P_\perp = (P_{1\perp}-P_{2\perp})/2, and perturbatively generated transverse momentum dependent (TMD) parton distributions. We show that the spin asymmetry at this non-trivial perturbative order can be described by the TMD parton distributions defined in either semi-inclusive DIS or the Drell-Yan process. We derive the same hard parts from both the collinear factorization approach and in the context of the Brodsky-Hwang-Schmidt model, verifying that they are not sensitive to details of the factorized long distance physics.
dc.description60 pages, 22 figures
dc.identifierhttps://arxiv.org/abs/0706.1196
dc.identifierhttp://arxiv.org/abs/0706.1196
dc.identifierPhys.Rev.D76:074029,2007
dc.identifierdoi:10.1103/PhysRevD.76.074029
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/186310
dc.subjectHigh Energy Physics - Phenomenology
dc.titleSingle Transverse-Spin Asymmetry in Hadronic Dijet Production
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