PT Journal
AU Bordes, J
   Chan, HM
   Tsun, TS
TI A solution to the strong CP problem transforming the theta angle to the KM CP-violating phase
SO International Journal of Modern Physics A
JI Int. J. Mod. Phys. A
PY 2010
BP 5897
EP 5911
VL 25
IS 32
DI 10.1142/S0217751X10051165
LA English
DE Strong CP phase; CKM matrix; CP violation
AB 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.
ER