Yukawaon Model with U(3)$\times$O(3) Family Symmetries

Details Yukawaon Model with U(3)$\times$O(3) Family Symmetries Yukawaon Model with U(3)$\times$O(3) Family Symmetries

2010-11-04

arxiv.org/abs/1011.1064v3

J.Phys.G38:085004,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, no figure, minor change of model, title changed

Scientific paper

10.1088/0954-3899/38/8/085004

A quark and lepton mass matrix model with family symmetries U(3)$\times$O(3) is investigated on the basis of the so-called yukawaon model. In the present model, quarks and leptons are assigned to $(\ell, e^c, u^c) \sim ({\bf 3}, {\bf 3}, {\bf 3}^*)$ of U(3) and $(q, d^c, \nu^c) \sim ({\bf 3}, {\bf 3}, {\bf 3})$ of O(3). Then, the neutrino mass matrix is given by $M_\nu = m_D M_R^{-1} m_D^T$ with $m_D \propto < \Phi_e > $, where the charged lepton mass matrix $M_e$ is given by $M_e = k < \Phi_e ><\Phi_e^T >$. A merit in considering U(3)$\times$O(3) lies in that we can lower the cutoff scale $\Lambda$ in the yukawaon model.

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