Twist-3 quark-gluon correlation contribution to single-transverse spin asymmetry for direct-photon and single-jet productions in pp collision

Autor:	Kanazawa, Koichi, Koike, Yuji
Rok vydání:	2012
Předmět:	High Energy Physics - Phenomenology High Energy Physics - Experiment
Druh dokumentu:	Working Paper
Popis:	We study the contribution of the collinear twist-3 quark-gluon correlation to the single transverse-spin asymmetry in direct-photon and single-jet productions in pp collision. At typical RHIC kinematics we find sizable asymmetries in the forward region of the polarized nucleon while they are almost zero in the backward region. We also find the soft-fermion pole contribution is vanishingly small, suggesting the measurement of these asymmetries provides us with an unique opportunity to determine the net soft-gluon pole function. Comment: 4 pages, 2 figures, talk presented at the 20th International Symposium on Spin Physics (SPIN2012), Dubna, Russia, September 17 - 22, 2012
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1211.7182 Zobrazit plný text záznamu View this record from Arxiv