A Solution of the Strong CP Problem Transforming the theta-angle to the KM CP-violating Phase

Details A Solution of the Strong CP Problem Transforming the theta-angle to the KM CP-violating Phase A Solution of the Strong CP Problem Transforming the theta-angle to the KM CP-violating Phase

2010-02-18

arxiv.org/abs/1002.3542v1

Int.J.Mod.Phys.A25:5897-5911,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 2 figures

Scientific paper

10.1142/S0217751X10051165

It is shown that in the scheme with a rotating fermion mass matrix (i.e. one with a scale-dependent orientation in generation space) suggested earlier for explaining fermion mixing and mass hierarchy, the theta-angle term in the QCD action of topological origin can be eliminated by chiral transformations, while giving still nonzero masses to all quarks. Instead, the effects of such transformations get transmitted by the rotation to the CKM matrix as the KM phase giving, for $\theta$ of order unity, a Jarlskog invariant typically of order $10^{-5}$ as experimentally observed. Strong and weak CP violations appear then as just two facets of the same phenomenon.

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