Transversity and inclusive two-pion production

Details Transversity and inclusive two-pion production Transversity and inclusive two-pion production

2007-01-22

arxiv.org/abs/hep-ph/0701183v1

AIPConf.Proc.915:654-657,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 4 composite figures, talk presented at the 17th International Spin Physics Symposium (SPIN2006), Kyoto (Japan), Octob

Scientific paper

10.1063/1.2750865

A model for dihadron fragmentation functions is briefly outlined, that describes the fragmentation of a quark in two unpolarized hadrons. The parameters are tuned to the output of the PYTHIA event generator for two-hadron semi-inclusive production in deep inelastic scattering at HERMES. Then, predictions are made for the unknown polarized fragmentation function and the related single-spin asymmetry in the azimuthal distribution of $\pi^+ \pi^-$ pairs in semi-inclusive deep inelastic scattering on transversely polarized targets at HERMES and COMPASS. This asymmetry can be used to extract the quark transversity distribution.

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