Drell-Yan double-spin asymmetry A_{LT} in polarized p\bar{p} collisions: Wandzura-Wilczek contribution

Details Drell-Yan double-spin asymmetry A_{LT} in polarized p\bar{p} collisions: Wandzura-Wilczek contribution Drell-Yan double-spin asymmetry A_{LT} in polarized p\bar{p} collisions: Wandzura-Wilczek contribution

2008-05-15

arxiv.org/abs/0805.2289v3

Phys.Lett.B668:286-292,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 4 figures, minor modifications, typos corrected; version to appear in PLB

Scientific paper

10.1016/j.physletb.2008.08.049

The longitudinal-transverse spin asymmetry A_{LT} in the polarized Drell-Yan process depends on the twist-3 spin-dependent distributions of nucleon. In addition to the contributions expressed as matrix element of the twist-3 operators, these distributions contain the so-called Wandzura-Wilczek part, which is completely determined by a certain integral of the twist-2 spin-dependent parton distributions. We demonstrate that the recently obtained empirical information on the transversity distribution allows a realistic estimate of the Wandzura-Wilczek contribution to A_{LT} for the case of polarized proton-antiproton collisions. In particular, our results in the Wandzura-Wilczek approximation indicate that rather large A_{LT} can be observed in the proposed spin experiments at GSI, and its behavior as a function of dilepton mass obeys novel pattern, compared with the other double-spin asymmetries A_{TT} and A_{LL}. Our results provide a guide for testing a signal of effects originating from the twist-3 operators associated with quark-gluon correlation.

Affiliated with

Also associated with

No associations

Rating

Drell-Yan double-spin asymmetry A_{LT} in polarized p\bar{p} collisions: Wandzura-Wilczek contribution does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Drell-Yan double-spin asymmetry A_{LT} in polarized p\bar{p} collisions: Wandzura-Wilczek contribution, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drell-Yan double-spin asymmetry A_{LT} in polarized p\bar{p} collisions: Wandzura-Wilczek contribution will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-509773