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arXiv · 1407.4453

Unpolarized Dihadron Fragmentation Functions in Nonlocal Chiral Quark Model

Dong-Jing Yang·Fu-Jiun Jiang·Chian-De Li·Chung-Wen Kao·Seung-il Nam
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Abstract

We have calculated the unpolarized dihadron fragmentation functions (uDiFFs) of pions and kaons using the nonlocal chiral-quark model (NLChQM) and evolved our results to the transferred momentum scale Q$^2$=4$\mathrm{GeV}^2$ by the QCD evolution equations. These uDiFFs have also been computed in the Nambu--Jona-Lasinio-jet (NJL-jet) model for the sake of comparison. We find that there is substantial difference between the results of these two models. Furthermore, the DiFFs of $u\to \pi^{+}\pi^{-}$ and $g\to \pi^{+}\pi^{-}$ at $Q^2=109\,\mathrm{GeV}^2$ in these two models are presented in comparison with the parametrizations fitted by the Monte Carlo event generator JETSET.

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Dong-Jing Yang, Fu-Jiun Jiang, Chian-De Li, Chung-Wen Kao, Seung-il Nam. 2014-07-16. Unpolarized Dihadron Fragmentation Functions in Nonlocal Chiral Quark Model. https://arxiv.org/abs/1407.4453

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