Measuring B±→τ±ν and Bc±→τ ±ν at the Z peak

A. G. Akeroyd, Chuan-Hung Chen, S. Recksiegel

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9 Citations (Scopus)


The measurement of B±→τ±ντ at the B factories provides important constraints on the parameter tan β/mH± in the context of models with two Higgs doublets. Limits on this decay from e+e- collisions at the Z peak were sensitive to the sum of B±→τ ±ντ and Bc±→τ±ντ. Because of the possibly sizeable contribution from Bc±→τ±ντ we suggest that a signal for this combination might be observed if the CERN LEP L3 Collaboration used its total data of ∼3.6×106 hadronic decays of the Z boson. Moreover, we point out that a future linear collider operating at the Z peak (Giga Z option) could constrain tan β/mH± from the sum of these processes with a precision comparable to that anticipated at proposed high luminosity B factories from B±→τ±ντ alone.

Original languageEnglish
Article number115018
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number11
Publication statusPublished - 2008 Jun 23

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)


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