The cos 2 phi asymmetry of Drell-Yan and J/psi production in unpolarized ppbar scattering
| dc.creator | Barone, Vincenzo | |
| dc.creator | Lu, Zhun | |
| dc.creator | Ma, Bo-Qiang | |
| dc.date | 2006-12-28 | |
| dc.date.accessioned | 2026-07-07T11:22:24Z | |
| dc.date.available | 2026-07-07T11:22:24Z | |
| dc.description | We investigate the cos 2 phi azimuthal asymmetry in Drell--Yan and J/psi production from unpolarized ppbar scattering at GSI-HESR energies. The contribution to this asymmetry arising from the leading-twist Boer-Mulders function h_1^perp(x, k_T^2), which describes a correlation between the transverse momentum and the transverse spin of quarks in an unpolarized hadron, is explicitly evaluated, and predictions for the GSI-HESR kinematic regime are presented. We show that the cos 2 phi asymmetry is quite sizable both on the J/psi peak and in the Drell-Yan continuum region. Therefore these processes may offer an experimentally viable access to the Boer-Mulders function in the early unpolarized stage of GSI experiments. | |
| dc.description | 5 pages, 3 figures, to be published in Eur. Phys. J | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0612350 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0612350 | |
| dc.identifier | Eur.Phys.J.C49:967-971,2007 | |
| dc.identifier | doi:10.1140/epjc/s10052-006-0174-6 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/194559 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | The cos 2 phi asymmetry of Drell-Yan and J/psi production in unpolarized ppbar scattering | |
| dc.type | text |