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Weak Mixing Angles as Dynamical Degrees of Freedom

Alexei Anselm, Zurab Berezhiani

Published 1996-05-26, updated 1996-10-22Version 3

In an analogy to the case of axion, which converts the $\Theta$-angle into a dynamical degree of freedom, we are trying to imagine a situation where the quark mixing angles turn out to be dynamical degrees of freedom (pseudo-Goldstone bosons), and their vacuum expectation values are obtained from the minimization of the vacuum energy. We present an explicit supersymmetric model with horizontal symmetry, where such a mechanism can be realized. It implies one relation between the quark masses and the CKM mixing angles: $s_{13}s_{23}/s_{12}=(m_s/m_b)^2$, which is fulfilled within present experimental accuracy. We believe, however, that the idea might be more general than this concrete model, and it can be implemented in more profound frameworks.

Comments: Latex, 25 pages - as it will appear in Nucl. Phys. B
Journal: Nucl.Phys.B484:97-123,1997
Categories: hep-ph
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