EPJ Web of Conferences 3, 07005 (2010)
https://doi.org/10.1051/epjconf/20100307005

Quark Fragmentation to Pions in an Effective Chiral Theory

¹ Department of Physics, Tokai University, Hiratsuka-shi, Kanagawa 259-1292, Japan
² Department of Physics, University of Washington, Seattle, WA 98195-1560, USA
³ School of Chemistry and Physics, University of Adelaide, Adelaide, SA 5005, Australia
⁴ Radiation Laboratory, Nishina Accelerator Research Center, RIKEN, Wako, Saitama 351-0198, Japan

^a e-mail: bentz@keyaki.cc.u-tokai.ac.jp

Abstract

A description of fragmentation functions which satisfy the momentum and isospin sum rules is presented in an effective chiral quark theory of QCD. We concentrate on the pion fragmentation function, taking into account cascade-like processes in a generalized jet-model approach. Numerical results obtained in this NJL-jet model are presented and compared to empirical parametrizations.