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Título

New angle on the strong CP and chiral symmetry problems from a rotating mass matrix

AutorBordes, José ; Hong-Mo, Chan; Tsun, Tsou Sheung
Fecha de publicaciónene-2009
EditorWorld Scientific Publishing
CitaciónInternational Journal of Modern Physics A 24:101-112,2009
ResumenIt is shown that when the mass matrix changes in orientation (i.e. rotates) in generation space for a changing energy scale, the masses of the lower generations are not given just by its eigenvalues. In particular, these masses need not be zero even when the eigenvalues are zero. In that case, the strong CP problem can be avoided by removing the unwanted theta term by a chiral transformation not in contradiction with the nonvanishing quark masses experimentally observed. Similarly, a rotating mass matrix may shed new light on the problem of chhiral symmetry breaking. That the fermion mass matrix may so rotate with the scale has been suggested before as a possible explanation for up-down fermion mixing and fermion mass hierarchy, giving results in good agreement with experiment.
Versión del editorhttp://dx.doi.org/10.1142/S0217751X09042633
URIhttp://hdl.handle.net/10261/15696
DOI10.1142/S0217751X09042633
ISSN0217-751X
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