English

An effective model for quark masses and mixings

High Energy Physics - Phenomenology 2007-05-23 v1

Abstract

By analogy with an effective model of charged-lepton mass matrix that, with the inputs of meexpm^{exp}_e and mμexpm^{exp}_\mu, predicts (in a perturbative zero order) mτ=1776.80m_\tau = 1776.80 MeV close to mτexp=1777.030.26+0.30m^{exp}_\tau = 1777.03^{+0.30}_{-0.26} MeV, we construct such a model for quark mass matrices reproducing consistently the bulk of experimental information on quark masses and mixings. In particular, the model predicts Vub=0.00313|V_{u b}| = 0.00313, γ=argVub=63.8\gamma = - \arg V_{u b} = 63.8^\circ and Vtd=0.00785|V_{t d}| = 0.00785, β=argVtd=20.7\beta = - \arg V_{t d} = 20.7^\circ (i.e., sin2β=0.661\sin 2\beta = 0.661 to be compared with the BaBar value sin2βexp=0.59±0.14\sin 2\beta^{exp} = 0.59 \pm 0.14), if the figures Vusexp=0.2196|V^{exp}_{u s}| = 0.2196, Vcbexp=0.0402|V^{exp}_{c b}| = 0.0402 and msexp=123m^{exp}_{s} = 123 MeV, mcexp=1.25m^{exp}_{c} = 1.25 GeV, mbexp=4.2m^{exp}_{b} = 4.2 GeV are used as inputs. Also the rest of CKM matrix elements is predicted consistently by the experimental data. Here, quark masses and CKM matrix elements (ten independent quantities) are parametrized by eight independent model constants, what gives two independent predictions, e.g. for Vub|V_{ub}| and β\beta. The considered model deals with the fundamental-fermion Dirac mass matrices, so that the neutrino Majorana mass matrix is outside the scheme. Some foundations of the model are collected in Appendix.

Keywords

Cite

@article{arxiv.hep-ph/0108157,
  title  = {An effective model for quark masses and mixings},
  author = {Wojciech Krolikowski},
  journal= {arXiv preprint arXiv:hep-ph/0108157},
  year   = {2007}
}

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22 pages