Complex fermion mass term, regularization and CP violation

Details Complex fermion mass term, regularization and CP violation Complex fermion mass term, regularization and CP violation

2007-05-18

arxiv.org/abs/0705.2680v1

J.Phys.A40:F525-F530,2007

Physics

High Energy Physics

High Energy Physics - Theory

REVTeX, 4 pages

Scientific paper

10.1088/1751-8113/40/26/F03

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.

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