Transverse single spin asymmetries in photon production

Ivan Schmidt; Jacques Soffer; Jian-Jun Yang

Paper

Transverse single spin asymmetries in photon production

Abstract

Transverse single-spin asymmetries (SSA) in inclusive reactions are now considered to be directly related to the transverse momentum

of the fundamental partons involved in the process. We find that the ideal probe to extract information on the gluon Sivers function is the transverse SSA of prompt photon production

, at large

. The following related processes,

and

are also briefly discussed.