Transversity and dihadron fragmentation functions
arXiv:hep-ph/0412141 · doi:10.1142/9789812701909_0068
Abstract
The observation of the quark transversity distribution requires another soft object sensitive to the quark's transverse spin. Dihadron fragmentation functions represent a convenient tool to analyze partonic spin, which can influence the angular distribution of the two hadrons. In particular, the so-called interference fragmentation functions can be used to probe transversity both in semi-inclusive deep inelastic scattering as well as proton-proton collisions. We discuss two single-spin asymmetries sensitive to transversity in the these two processes, at leading twist and leading order in alpha_S.
4 pages, to appear in proceedings of SPIN2004, Trieste, 10-16 Oct 2004