R Parity violating enhancement of Bu -> l nu and Bc -> l nu

Details R Parity violating enhancement of Bu -> l nu and Bc -> l nu R Parity violating enhancement of Bu -> l nu and Bc -> l nu

2002-05-16

arxiv.org/abs/hep-ph/0205176v3

Phys.Lett.B541:121-128,2002

Physics

High Energy Physics

High Energy Physics - Phenomenology

Notation in the introduction clarified, version to be published in PLB. (12 pages, 2 figures)

Scientific paper

10.1016/S0370-2693(02)02216-5

We study the decays Bu -> l nu and Bc -> l nu in the context of the Minimal Supersymmetric Standard Model (MSSM) with explicit R parity violation. We analyse the correlation between the two decays and show that branching ratios (BRs) for Bc -> l nu may be of order 5% (over 40% in one case), without violating current bounds on Bu -> l nu. Although Bc mesons are inaccessible at the e+e- B factories, such large BRs for Bc -> l nu would possibly be within experimental observability at LEP and the Tevatron Run II, with much larger yields expected at the hadronic B factories. We also update some earlier bounds on products of R parity violating couplings in the light of new experimental results.

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