A Higgs Test of Horizontal Symmetry

Details A Higgs Test of Horizontal Symmetry A Higgs Test of Horizontal Symmetry

2010-02-22

arxiv.org/abs/1002.4176v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

version to be published in Physics Letters

Scientific paper

Identical interactions found in the three families of quarks and leptons suggest the presence of a horizontal symmetry. We discuss how such a symmetry can be tested by measuring the decay rates of Higgs into fermion pairs, and the Higgs production cross section. Depending on the details, there is a chance that the decay widths to the bottom-pair and the tau-pair may be down by more than a factor of 3 or more compared to the usual values, and the fusion production cross section of the Higgs also altered. Whatever the outcome, such a test also serves to constraint horizontal symmetry models.

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