Suggested new modes in supersymmetric proton decay

Details Suggested new modes in supersymmetric proton decay Suggested new modes in supersymmetric proton decay

1997-12-08

arxiv.org/abs/hep-ph/9712307v1

Phys.Lett. B423 (1998) 337-347

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages LateX, includes 4 figures

Scientific paper

10.1016/S0370-2693(98)00108-7

We show that in supersymmetric unified theories such as SO(10), implementation of the see-saw mechanism for neutrino masses introduces a new set of color triplet fields and thereby a new source of d=5 proton decay operators. For neutrino masses in a plausible range, these operators are found to have the right strength to yield observable, but not yet excluded, proton decay rates. The flavor structure of the new operators is distinctive. Proton decay modes into a charged lepton, such as l^+ \pi^0, l^+ K^0 and l^+ \eta where l = e or \mu, can become prominent, even for low or moderate values of tan(\beta) < 10, along with the \nu K^+ and \nu \pi^+ modes. A distinctive feature is the charged lepton modes involving an e^+ and/or a \mu^+ with the ratio \Gamma(l^+ K^0):\Gamma(l^+ \pi^0) = 2:1.

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