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arXiv · 0704.1153

Asymmetric Di-jet Production in Polarized Hadronic Collisions

Jian-Wei Qiu·Werner Vogelsang·Feng Yuan
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Abstract

Using the collinear QCD factorization approach, we study the single-transverse-spin dependent cross section Delta sigma(S_perp) for the hadronic production of two jets of momenta P_1=P+q/2 and P_2=-P+q/2. We consider the kinematic region where the transverse components of the momentum vectors satisfy P_perp >> q_perp >> Lambda_QCD. For the case of initial-state gluon radiation, we show that at the leading power in q_perp/P_perp and at the lowest non-trivial perturbative order, the dependence of Delta sigma(S_perp) on q_perp decouples from that on P_perp, so that the cross section can be factorized into a hard part that is a function only of the single scale P_perp, and into perturbatively generated transverse-momentum dependent (TMD) parton distributions with transverse momenta k_perp = O(q_perp).

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Jian-Wei Qiu, Werner Vogelsang, Feng Yuan. 2007-04-09. Asymmetric Di-jet Production in Polarized Hadronic Collisions. https://doi.org/10.1016/j.physletb.2007.05.023

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