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Monte Carlo simulation of single spin asymmetries in pion-proton collisions

BIANCONI, Andrea;
2006-01-01
2006
Ateneo di appartenenza
PE2_2 Particle physics
sì
2-s2.0-33744758030
WOS:000238698300026
Sì, ma tipo non specificato
Inglese
Internazionale
73
114002
-
We present Monte Carlo simulations of both the Sivers and the Boer-Mulders effects in the polarized Drell-Yan pi(+/-)p(up arrow)->mu(+)mu X- process at a kinematics suitable to the COMPASS setup. For the Sivers effect, we adopt two different parametrizations for the Sivers function to explore the statistical accuracy required to extract unambiguous information on this parton density. In particular, we verify the possibility of checking its predicted sign change between semi-inclusive deep-inelastic scattering (SIDIS) and Drell-Yan processes, a crucial test of nonperturbative QCD. For the Boer-Mulders effect, because of the lack of parametrizations we can make only guesses. The goal is to explore the possibility of extracting information on the transversity distribution, the missing piece necessary to complete the knowledge of the nucleon spin structure at leading twist, and the Boer-Mulders function, which is related to the long-standing problem of the violation of the Lam-Tung sum rule in the unpolarized Drell-Yan cross section.
Enti pubb. di ricerca ital.
2
info:eu-repo/semantics/article
262
Bianconi, Andrea; M., Radici
1 Contributo su Rivista::1.1 Articolo in rivista
none
1.1 Articolo in rivista
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11379/36433
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