Spin asymmetry at large x_F and k_T
| dc.creator | Jarvinen, M. | |
| dc.date | 2007-10-01 | |
| dc.date.accessioned | 2026-07-07T11:37:42Z | |
| dc.date.available | 2026-07-07T11:37:42Z | |
| dc.description | We suggest that the large single spin asymmetries observed at high momentum fractions x_F and transverse momenta k_T of the pion in p^\uparrow p -> π(x_F,k_T)+X arise from the coherence of the soft interactions with the hard parton scattering process. Such coherence can be maintained if x_F -> 1 as k_T -> \infty, while k_T^2(1-x_F) ~ Λ_{QCD}^2 stays fixed. Analogous coherence effects have been seen experimentally in the Drell-Yan process at high x_F. We find that the p^\uparrow p -> πX production amplitudes have large dynamic phases and that helicity flip contributions are unsuppressed in this limit, giving rise to potentially large single spin asymmetries. | |
| dc.description | 3 pages, 1 figure. Talk given at EPS HEP 2007, Manchester | |
| dc.identifier | https://arxiv.org/abs/0710.0343 | |
| dc.identifier | http://arxiv.org/abs/0710.0343 | |
| dc.identifier | J.Phys.Conf.Ser.110:022021,2008 | |
| dc.identifier | doi:10.1088/1742-6596/110/2/022021 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/199293 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Spin asymmetry at large x_F and k_T | |
| dc.type | text |