We consider the Sivers, Collins and transversity functions as extracted from SIDIS and e + e- experimental data and investigate to what extent they might explain the large Single Spin Asymmetries (SSA) observed in proton-proton inclusive processes. This phenomenological study is performed within the TMD factorization scheme. As the SIDIS data cover only a limited range of x values (x ≲ 0.3), we allow for different large x behaviours of the SIDIS Sivers functions and transversity distributions. We conclude that, within the available experimental constraints, one cannot observe any clear universality breaking effect for the Sivers functions.
|Original language||English (US)|
|State||Published - Dec 1 2009|
|Event||17th International Workshop on Deep-Inelastic Scattering and Related Topics, DIS 2009 - Madrid, Spain|
Duration: Apr 26 2009 → Apr 30 2009
|Other||17th International Workshop on Deep-Inelastic Scattering and Related Topics, DIS 2009|
|Period||4/26/09 → 4/30/09|
All Science Journal Classification (ASJC) codes