We compute the O(αs) SUSY-QCD corrections to the W and charged Higgs mediated inclusive semi-tauonic B-decay, B̄ → τ ν̄τ X. Combining the USY contribution with the SM result obtained from the heavy quark effective field theory, plus ordinary QCD corrections, we find that the allowed region in the (tan β, MH±)-plane could be significantly modified by the short-distance supersymmetric effects. Since the sensitivity to the SUSY parameters other than μ (the higgsino mixing mass) is rather low, the following effective bound emerges for μ, < 0 at the 2σ level: tan β ≲ 0.43 (MH±/GeV). Remarkably, for μ > 0 there could be no bound at all. Finally, we provide a combined (tan β, MH±) exclusion plot using our B-meson results together with the recent data from top quark decays. © 1997 Elsevier Science B.V.
|Journal||Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics|
|Publication status||Published - 14 Aug 1997|