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Type: Journal article
Title: Calculating kaon fragmentation functions from the Nambu-Jona-Lasinio jet model
Author: Matevosyan, H.
Thomas, A.
Bentz, W.
Citation: Physical Review D - Particles, Fields, Gravitation, and Cosmology, 2011; 83(7):074003-1-074003-7
Publisher: American Physical Society
Issue Date: 2011
ISSN: 1550-7998
Statement of
Hrayr H. Matevosyan, Anthony W. Thomas, and Wolfgang Bentz
Abstract: The Nambu–Jona-Lasinio (NJL)-jet model provides a sound framework for calculating the fragmentation functions in an effective chiral quark theory, where the momentum and isospin sum rules are satisfied without the introduction of ad hoc parameters. Earlier studies of the pion fragmentation functions using the NJL model within this framework showed qualitative agreement with the empirical parametrizations. Here we extend the NJL-jet model by including the strange quark. The corrections to the pion fragmentation functions and corresponding kaon fragmentation functions are calculated using the elementary quark to quark-meson fragmentation functions from NJL. The results for the kaon fragmentation functions exhibit a qualitative agreement with the empirical parametrizations, while the unfavored strange quark fragmentation to pions is shown to be of the same order of magnitude as the unfavored light quark. The results of these studies are expected to provide important guidance for the analysis of a large variety of semi-inclusive data.
Rights: © 2011 American Physical Society
RMID: 0020105082
DOI: 10.1103/PhysRevD.83.074003
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Appears in Collections:Chemistry and Physics publications

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