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EnglishThe unpolarized, helicity, and transversity distributions of quarks in the proton are calculated in the overlap representation of light-cone wave functions 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 evolution 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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| Titolo: | Drell-Yan processes, transversity and light-cone wavefunctions |
| Autori: | |
| Data di pubblicazione: | 2007 |
| Rivista: | |
| Abstract: | The unpolarized, helicity, and transversity distributions of quarks in the proton are calculated in the overlap representation of light-cone wave functions 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 evolution 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. |
| Handle: | http://hdl.handle.net/11571/33803 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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