The Contribution of B(c) mesons to the search for B ---> tau+ tau-neutrino decays at LEP

Jul, 1997
7 pages
Published in:
  • Phys.Lett.B 410 (1997) 299-303
e-Print:
Report number:
  • CERN-TH-97-150

Citations per year

199720042011201820233102
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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