Proton Decay Signatures of Orbifold GUTs

Details Proton Decay Signatures of Orbifold GUTs Proton Decay Signatures of Orbifold GUTs

2002-04-03

arxiv.org/abs/hep-ph/0204037v3

Phys.Lett. B539 (2002) 119-125

Physics

High Energy Physics

High Energy Physics - Phenomenology

Latex, 10 pages, referencing error corrected

Scientific paper

In grand unified theories based on orbifold constructions in higher dimensions, Higgsino-mediated proton decay is absent. However, proton decay mediated by $X$ and $Y$ gauge bosons is typically enhanced to levels detectable by current and future experiments. We analyse the phenomenology of proton decay induced by the minimal coupling of $X,Y$ gauge bosons. In particular, we show that the novel realization of matter in orbifold GUTs can lead to unusual final state flavour structure, for example, the dominance of the $p\to K^0\mu^+$ mode. Furthermore, we discuss proton decay induced by higher-derivative brane operators, finding potentially observable rates for natural values of the operator coefficients.

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