Flavor asymmetry in polarized proton-deuteron Drell-Yan process

Abstract

We discuss the possibility of finding polarized antiquark flavor asymmetry in Drell-Yan processes. We find that the difference between polarized proton-proton and proton-deuteron Drell-Yan cross sections should provide valuable information on the polarized flavor asymmetry. Numerical results indicate that the asymmetry effects are conspicuous especially in the large-x_F region. Our analysis is important for the transversity distributions because the flavor asymmetry cannot be found by inclusive lepton scattering and W-production processes.

Comments: 1+6 pages LATEX, sprocl.sty, amsmath.sty, epsfig.sty, wrapfig.sty, 2 eps figures. Talk at the RCNP-TMU Symposium on "Spins in Nuclear and Hadronic Reactions", Tokyo, Japan, Oct.26-28, 1999, to be published in proceedings. Complete postscript file is available at http://www-hs.phys.saga-u.ac.jp Email: kumanos@cc.saga-u.ac.jp