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arXiv:hep-ph/0001132·v2·High Energy Physics — Phenomenology

Long distance contribution to , - a searching ground mode for new physics

S. Fajfer (U. of Ljubljana)🇸🇮 · P. Singer (Technion)🇮🇱

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Abstract

The decay has been sugested as a test for minimal supersymmetric standard model and for supersymmetric models with R-parity violating couplings, in view of its extreme smallnesss in the standard model. We calculate two long distance contributions to this decay, that associated with and intermediate states and that induced by virtual , mesons. The branching ratio due to these contributions is , which is somewhat smaller than the standard model short distance result, leaving this decay free for the search of new physics.

Comments: 13 pages, 2 figures, revised version

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