Collins fragmentation function for pions and kaons in a spectator model

Alessandro Bacchetta, Leonard P. Gamberg, Gary R. Goldstein, Asmita Mukherjee

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Abstract

We calculate the Collins fragmentation function in the framework of a spectator model with pseudoscalar pion-quark coupling and a Gaussian form factor at the vertex. We determine the model parameters by fitting the unpolarized fragmentation function for pions and kaons. We show that the Collins function for the pions in this model is in reasonable agreement with recent parametrizations obtained by fits of the available data. In addition, we compute for the first time the Collins function for the kaons.

Original languageEnglish (US)
Pages (from-to)234-243
Number of pages10
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume659
Issue number1-2
DOIs
StatePublished - Jan 17 2008

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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