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arXiv · hep-ph/9707248

The Contribution of Bc Mesons to the Search for B->tau nu Decays at LEP

M. L. Mangano·S. R. Slabospitsky
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Abstract

We study the contribution of B_c mesons to the search for B->tau nu decays. We find that at LEP the contributions from B_u and B_c mesons can be comparable. This observation can have a relevant impact on the extraction of constraints on new physics (such as charged-Higgs contributions) from current LEP limits on B->tau nu final states. Inclusion of the B_c contribution can reduce the current L3 limit on Tan(beta)/M_H from 0.38/GeV (90%CL) down to 0.27/GeV (90%CL).

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M. L. Mangano, S. R. Slabospitsky. 1997-07-04. The Contribution of Bc Mesons to the Search for B->tau nu Decays at LEP. https://doi.org/10.1016/s0370-2693(97)00953-2

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