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arXiv · hep-ph/0701183

Transversity and inclusive two-pion production

Marco Radici
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Abstract

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 $π^+ π^-$ 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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Marco Radici. 2007-01-22. Transversity and inclusive two-pion production. https://doi.org/10.1063/1.2750865

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