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Article
Report number	hep-ph/0204037 ; CERN-TH-2002-070 ; CERN-TH-2002-070
Title	Proton Decay Signatures of Orbifold GUTs
Related title	grand unified theories
Author(s)	Hebecker, Arthur (CERN) ; March-Russell, John (CERN)
Affiliation	(CERN)
Publication	2002
Imprint	3 Apr 2002
Number of pages	10
Note	Latex, 10 pages, referencing error corrected
In:	Phys. Lett. B 539 (2002) 119-25
DOI	10.1016/S0370-2693(02)02072-5
Subject category	Particle Physics - Phenomenology
Abstract	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.
Copyright/License	Copyright @ unknown. Published by Elsevier B.V.

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