%0 Journal Article
%T Complex fermion mass term, regularization and CP violation
%A Mitra
%A P.
%J High Energy Physics - Phenomenology
%D 2007
%I 
%R 10.1088/1751-8113/40/26/F03
%X 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.
%U http://arxiv.org/abs/0705.2680