$B_K$ and Explicit Chiral Symmetry Breaking
High Energy Physics - Phenomenology
2009-10-28 v2
Abstract
The parameter is discussed in the general context of calculating beyond the factorization approximation for hadronic matrix elements. A variant of the method of Bardeen et al. is used. We present calculations within a low energy approach and a calculation within the Nambu--Jona-Lasinio model. Matching with the QCD behaviour and dependence on non-zero current quark masses is studied.
Cite
@article{arxiv.hep-ph/9409255,
title = {$B_K$ and Explicit Chiral Symmetry Breaking},
author = {Johan Bijnens and Joaquim Prades},
journal= {arXiv preprint arXiv:hep-ph/9409255},
year = {2009}
}
Comments
15 pages, 4 postscript figures included, NORDITA-94/44 N,P. Mistake in the numerics discovered which changed some of the conclusions. One figure also changed