Complex fermion mass term, regularization and CP violation
High Energy Physics - Theory
2008-11-26 v1 High Energy Physics - Phenomenology
Abstract
It is well known that the CP violating theta term of QCD can be converted to a phase in the quark mass term. However, a theory with a complex mass term for quarks can be regularized so as not to violate CP, for example through a zeta function. The contradiction is resolved through the recognition of a dependence on the regularization or measure. The appropriate choice of regularization is discussed and implications for the strong CP problem are pointed out.
Cite
@article{arxiv.0705.2680,
title = {Complex fermion mass term, regularization and CP violation},
author = {P. Mitra},
journal= {arXiv preprint arXiv:0705.2680},
year = {2008}
}