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arXiv · hep-ph/0608037

Modeling dihadron fragmentation functions

Alessandro Bacchetta·Marco Radici
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Abstract

We present a model for dihadron fragmentation functions, describing the fragmentation of a quark into two unpolarized hadrons. We tune the parameters of our model to the output of the PYTHIA event generator for two-hadron semi-inclusive production in deep inelastic scattering at HERMES. Once the parameters of the model are fixed, we make predictions for other unknown fragmentation functions and for a single-spin asymmetry in the azimuthal distribution of pi+ pi- pairs in semi-inclusive deep inelastic scattering on a transversely polarized target at HERMES and COMPASS. Such asymmetry could be used to measure the quark transversity distribution function.

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Alessandro Bacchetta, Marco Radici. 2006-08-03. Modeling dihadron fragmentation functions. https://doi.org/10.1103/physrevd.74.114007

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