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arXiv · hep-ph/9801341

A_{LT} in the polarized Drell-Yan process at RHIC and HERA energies

Y. Kanazawa·Yuji Koike·N. Nishiyama
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Abstract

We present a leading order (LO) estimate for the longitidinal-transverse spin asymmetry (A_{LT}) in the nucleon-nucleon polarized Drell-Yan process at RHIC and HERA-$\vec{N}$ energies in comparison with A_{LL} and A_{TT}. A_{LT} receives contribution from g_1, the transversity ditribution h_1, and the twist-3 distributions g_T and h_L. For the twist-3 contribution we use the bag model prediction evolved to a high energy scale by the large-N_c evolution equation. We found that A_{LT} (normalized by the asymmetry in the parton level) is much smaller than the corresponding A_{TT}. Twist-3 contribution given by the bag model also turned out to be negligible.

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Y. Kanazawa, Yuji Koike, N. Nishiyama. 1998-03-15. A_{LT} in the polarized Drell-Yan process at RHIC and HERA energies. https://doi.org/10.1016/s0370-2693(98)00516-4

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