QCD corrections to charged Higgs-mediated $b\to c\tau \nu$ decay

Abstract

We calculate the $O({\alpha }_s)$ corrections to the charged Higgs mediated inclusive semi-tauonic $B$ decay. By working in the Landau gauge, we demonstrate how to obtain the charged Higgs contributions (both direct and interference terms) from the known QCD corrections to $t\to b{H}^{+}$. Combining our results with $O(1/m_b^2)$ corrections to the spectator model and comparing the theoretical prediction with the recent experimental measurements, we find a model-independent $2\sigma$ upper bound on the ratio of Higgs vacuum expectation values, $\tan \beta <0.52(m_H/1GeV)$.

10 pages, 1 figure, revtex

References in corpus (1)

• Estimates for Forward-backward Asymmetry in $B\to K^{\ast }(892)l^{+}{l}^{-}$

Cited by in corpus (44)

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• Scalar contributions to $b\to c(u)\tau \nu$ transitions
• B decays in the upsilon expansion
• Searching for supersymmetry in rare B decays
• CP Violation in Top Physics
• Fingerprinting the extended Higgs sector using one-loop corrected Higgs boson couplings and future precision measurements
• Constraining the Two-Higgs-Doublet-Model parameter space
• Prospects for charged Higgs searches at the LHC
• Constraining new physics in $b\to c\ell \nu$ transitions
• Fingerprinting non-minimal Higgs sectors
• First limit on inclusive $B\to X_s\nu \bar{\nu }$ decay and constraints on new physics
• Indirect bounds on heavy scalar masses of the two-Higgs-doublet model in light of recent Higgs boson searches
• Charged Higgs phenomenology in the lepton-specific two Higgs doublet model
• Prospects for heavy supersymmetric charged Higgs boson searches at hadron colliders
• Charged Higgs on $B^{-}\to \tau {\bar{\nu }}_{\tau }$ and $\bar{B}\to P(V)\ell {\bar{\nu }}_{\ell }$
• Natural Multi-Higgs Model with Dark Matter and CP Violation
• Improving constraints on tan(beta)/m_H using B \to D tau \bar{nu}
• Probing the charged Higgs boson at the LHC in the CP-violating type-II 2HDM
• Searching for New Physics in Rare $B\to \tau$ Decays
• Multi-tau-lepton signatures at the LHC in the two Higgs doublet model
• Trilinear Higgs couplings in the two Higgs doublet model with CP violation
• Charged Higgs phenomenology in the flipped two Higgs doublet model
• Lepton angular asymmetries in semileptonic charmful B decays
• Exploring the CP-Violating Inert-Doublet Model
• Chargino Mass and $R_b$ Anomaly
• Higgs Phenomenology in the Minimal $SU(3{)}_L\times U(1{)}_X$ Model
• Exact and Approximate Formulas for Neutrino Mixing and Oscillations with Non-Standard Interactions
• Supersymmetric Time Reversal Violation in Semileptonic Decays of Charged Mesons
• Flavor changing Z-decays from scalar interactions at a Giga-Z Linear Collider
• Polarization Measurements and T-Violation in Exclusive Semileptonic B Decays
• Tau lepton distributions in semileptonic B decays
• Measurement of the Branching Ratio for the Process b -> tau nu X
• T-Violation in $K^{+}\to {\mu }^{+}\nu \gamma$ Decay And Supersymmetry
• Searching $R$-parity-violating supersymmetry in semileptonic $B$-decays
• The tan(beta) - M_H^\pm bound from inclusive semi-tauonic B-decays in the MSSM
• Determination of tan(beta) from the Higgs boson decay at linear colliders
• Search for New Physics at a Super-B Factory
• Testing Time Reversal Invariance in Exclusive Semileptonic B Meson Decays
• Polarized Λ_b \to X_c τνin the SM and THDM
• Signatures for the Charged Higgs Decay of the Top Quark at the Tevatron
• Upper Bound on R_b in Two Higgs Doublet Model from Lepton Universality
• Universality test of the charged Higgs boson couplings at the LHC and at B factories
• Quantum SUSY signatures in low and high energy processes