Predictions for the transverse single spin asymmetry (SSA), AN, are given for the inclusive processes lp↑→hX and lp ↑→jet+X, which could be measured in operating or future experiments. These estimates are based on the Sivers distributions and the Collins fragmentation functions which fit the azimuthal asymmetries measured in semi-inclusive deep inelastic scattering (SIDIS) processes (lp ↑→l′hX). The factorization in terms of transverse momentum dependent distribution and fragmentation functions (TMD factorization)-which supplies the theoretical framework in which SIDIS azimuthal asymmetries are analyzed-is assumed to hold also for the lp→hX inclusive process at large PT. A measurement of AN would then provide a direct test of the validity of the TMD factorization in this case and would have important consequences for the study and understanding of SSAs in pp ↑→hX processes.
|Original language||English (US)|
|Journal||Physical Review D - Particles, Fields, Gravitation and Cosmology|
|State||Published - Feb 4 2010|
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)