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Title: Dressed Quark Mass Dependence of Pion and Kaon Form Factors

Abstract

The structure of hadrons is described well by the Nambu-Jona-Lasinio (NJL) model, which is a chiral effective quark theory of QCD. In this work we explore the electromagnetic structure of the pion and kaon using the three-flavor NJL model in the proper-time regularization scheme, including effects of the pion cloud at the quark level. In the calculation there is only one free parameter, which we take as the dressed light quark (u and d) mass. In the regime where the dressed light quark mass is approximately 0.25 GeV we find that the calculated values of the kaon decay constant, current quark masses, and quark condensates are consistent with experiment- and QCD-based analyses. We also investigate the dressed light quark mass dependence of the pion and kaon electromagnetic form factors, where comparison with empirical data and QCD predictions also favors a dressed light quark mass near 0.25 GeV.

Authors:
; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan; USDOE Office of Science - Office of Nuclear Physics
OSTI Identifier:
1396049
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 91; Journal Issue: 2; Journal ID: ISSN 0556-2813
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English

Citation Formats

Ninomiya, Y., Bentz, W., and Cloet, I. C. Dressed Quark Mass Dependence of Pion and Kaon Form Factors. United States: N. p., 2015. Web. doi:10.1103/PhysRevC.91.025202.
Ninomiya, Y., Bentz, W., & Cloet, I. C. Dressed Quark Mass Dependence of Pion and Kaon Form Factors. United States. doi:10.1103/PhysRevC.91.025202.
Ninomiya, Y., Bentz, W., and Cloet, I. C. Wed . "Dressed Quark Mass Dependence of Pion and Kaon Form Factors". United States. doi:10.1103/PhysRevC.91.025202.
@article{osti_1396049,
title = {Dressed Quark Mass Dependence of Pion and Kaon Form Factors},
author = {Ninomiya, Y. and Bentz, W. and Cloet, I. C.},
abstractNote = {The structure of hadrons is described well by the Nambu-Jona-Lasinio (NJL) model, which is a chiral effective quark theory of QCD. In this work we explore the electromagnetic structure of the pion and kaon using the three-flavor NJL model in the proper-time regularization scheme, including effects of the pion cloud at the quark level. In the calculation there is only one free parameter, which we take as the dressed light quark (u and d) mass. In the regime where the dressed light quark mass is approximately 0.25 GeV we find that the calculated values of the kaon decay constant, current quark masses, and quark condensates are consistent with experiment- and QCD-based analyses. We also investigate the dressed light quark mass dependence of the pion and kaon electromagnetic form factors, where comparison with empirical data and QCD predictions also favors a dressed light quark mass near 0.25 GeV.},
doi = {10.1103/PhysRevC.91.025202},
journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 2,
volume = 91,
place = {United States},
year = {2015},
month = {2}
}

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