The Contribution of B(c) mesons to the search for B ---> tau+ tau-neutrino decays at LEP
Jul, 19977 pages
Published in:
- Phys.Lett.B 410 (1997) 299-303
e-Print:
- hep-ph/9707248 [hep-ph]
Report number:
- CERN-TH-97-150
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Abstract: (Elsevier)
We study the contribution of B c mesons to the search for B → τν τ 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 → τν final states. Inclusion of the B c contribution can reduce the current L3 limit on tan β M H from 0.38 GeV −1 (90% CL) down to 0.27 GeV −1 (90% CL).Note:
- 8 pages, Latex, epsfig, 1 figure
- electron positron: annihilation
- bottom: pair production
- bottom: fragmentation
- B: leptonic decay
- B: branching ratio
- upper limit
- effect: B/c
- Higgs particle
- numerical calculations
- B --> tau neutrino/tau
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