The much debated issue of the transverse single spin asymmetry A N observed in the inclusive large P T production of a single hadron in pp interactions, p↑p→X, is considered in a transverse momentum dependent factorization scheme. A previous result stating that the maximum contribution of the Collins effect is strongly suppressed, is revisited, correcting a numerical error. New estimates are given, adopting the Collins functions recently extracted from semi-inclusive deep inelastic scattering and e +e - data, and phenomenological consequences are discussed.
|Original language||English (US)|
|Journal||Physical Review D - Particles, Fields, Gravitation and Cosmology|
|State||Published - Oct 31 2012|
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)