Parameter fitting in three-flavor Nambu–Jona-Lasinio model with various regularizations
NuclearPhysicsB_906_524.pdf 836 KB
We study the three-flavor Nambu–Jona-Lasinio model with various regularization procedures. We per-form parameter fitting in each regularization and apply the obtained parameter sets to evaluate various physical quantities, several light meson masses, decay constant and the topological susceptibility. The model parameters are adopted even at very high cutoff scale compare to the hadronic scale to study the asymptotic behavior of the model. It is found that all the regularization methods except for the dimensional one actually lead reliable physical predictions for the kaon decay constant, sigma meson mass and topological susceptibility without restricting the ultra-violet cutoff below the hadronic scale.
HK is supported by MOST 103-2811-M-002-087. TI is supported by JSPS KAKENHI Grant Numbers 26400250 and 15H03663.
Nuclear Physics B
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Copyright (c) 2016 The Authors.
This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
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