Drell-Yan processes, transversity and light-cone wavefunctions
摘要
The unpolarized, helicity and transversity distributions of quarks in the proton are calculated in the overlap representation of light-cone wavefunctions truncated to the lowest order Fock-space components with three valence quarks. The three distributions at the hadronic scale satisfy an interesting relation consistent with the Soffer inequality. Results are derived in a relativistic quark model including radiative corrections up to the next-to-leading order. Predictions for the double transverse-spin asymmetry in Drell-Yan dilepton production initiated by proton-antiproton collisions are presented. Asymmetries of about 20-30% are found in the kinematic conditions of the PAX experiment.
关键词
引用
@article{arxiv.hep-ph/0612094,
title = {Drell-Yan processes, transversity and light-cone wavefunctions},
author = {B. Pasquini and M. Pincetti and S. Boffi},
journal= {arXiv preprint arXiv:hep-ph/0612094},
year = {2008}
}
备注
17 pages, 7 figures; version to appear in Phys. Rev. D