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arXiv · hep-ph/0612094

Drell-Yan processes, transversity and light-cone wavefunctions

B. Pasquini·M. Pincetti·S. Boffi
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Abstract

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.

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B. Pasquini, M. Pincetti, S. Boffi. 2007-08-31. Drell-Yan processes, transversity and light-cone wavefunctions. https://doi.org/10.1103/physrevd.76.034020

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