Rare K-Decays as Crucial Tests for Unified Models with Gauged Baryon Number:

Details Rare K-Decays as Crucial Tests for Unified Models with Gauged Baryon Number: Rare K-Decays as Crucial Tests for Unified Models with Gauged Baryon Number:

1993-01-22

arxiv.org/abs/hep-ph/9301264v1

Phys.Lett. B311 (1993) 153-156

Physics

High Energy Physics

High Energy Physics - Phenomenology

(7 pages, LATEX, including figures drawn by LATEX) DOE-ER40200-304 CPP-50

Scientific paper

10.1016/0370-2693(93)90548-V

In the grand-unified models based on SU(15) and SU(16) in which the quarks and leptons are un-unified at the intermediate stages, we show that ${\rm BR}\; (K_L \to \mu e) \leq 10^{-14}$ and ${\rm BR}\; (K^+ \to \pi^+\mu e) \leq 10^{-14}$ despite the presence of leptoquark gauge bosons. Thus, the observation of these processes in the ongoing or upcoming experiments will rule out the models.

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