Brane world unification of quark and lepton masses and its implication for the masses of the neutrinos

Abstract

A TeV-scale scenario is constructed in an attempt to understand the relationship between quark and lepton masses. This scenario combines a model of early (TeV) unification of quarks and leptons with the physics of large extra dimensions. It demonstrates a relationship between quark and lepton mass scales at rather ``low'' (TeV) energies which will be dubbed as {\em early quark-lepton mass unification}. It also predicts that the masses of the neutrinos are naturally light and Dirac. There is an interesting correlation between neutrino masses and those of the unconventionally charged fermions which are present in the early unification model. If these unconventional fermions were to lie between 200 GeV and 300 GeV, the Dirac neutrino mass scale is predicted to be between 0.07 eV and 1 eV.

ReVTeX, 16 double-column pages. Typos corrected. One added reference

References in corpus (1)

• Early SU(4)_PS x SU(2)_L x SU(2)_R x SU(2)_H Unification of Quarks and Leptons

Cited by in corpus (9)

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• Renormalization Group Evolution of Dirac Neutrino Masses
• The $\mu -\tau$ reflection symmetry of Dirac neutrinos and its breaking effect via quantum corrections
• Precise predictions for Dirac neutrino mixing
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• Quark-lepton mass unification at TeV scales
• Quark-Lepton Symmetry In Five Dimensions
• Combining Left-Right And Quark-Lepton Symmetries In 5D
• Quark-Lepton Symmetry and Quartification in Five Dimensions