Beyond $\mathcal{R}(D^{(\ast )})$ with the general 2HDM-III for $b\to c\tau \nu$

Abstract

We review the parameter regions allowed by measurements of $\mathcal{R}(D^{(\ast )})$ and by a theoretical limit on $\mathcal{B}(B_c\to \tau \nu )$ in terms of generic scalar and pseudoscalar new physics couplings, $g_s$ and $g_p$. We then use these regions as constraints to predict the ranges for additional observables in $b\to c\tau \nu$ including the differential decay distributions $d\Gamma /d{q}^2$; the ratios $\mathcal{R}(J/\psi )$ and $\mathcal{R}({\Lambda }_c)$; and the tau-lepton polarisation in $B\to D^{(\star )}\tau \nu$, with emphasis on the CP violating normal polarisation. Finally we map the allowed regions in $g_s$ and $g_p$ into the parameters of four versions of the Yukawa couplings of the general 2HDM-III model. We find that the model is still viable but could be ruled out by a confirmation of a large $\mathcal{R}(J/\psi )$.

arXiv comment27 pages, 11 figures, major changes with new analysis and plots

References in corpus (75)

• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of summer 2016
• Measurements of the Higgs boson production and decay rates and constraints on its couplings from a combined ATLAS and CMS analysis of the LHC $pp$ collision data at $\sqrt{s}=$ 7 and 8 TeV
• Evidence for an excess of B -> D(*) Tau Nu decays
• Measurement of an Excess of B -> D(*) Tau Nu Decays and Implications for Charged Higgs Bosons
• Measurement of the branching ratio of $\bar{B}\to D^{(\ast )}{\tau }^{-}{\bar{\nu }}_{\tau }$ relative to $\bar{B}\to D^{(\ast )}{\ell }^{-}{\bar{\nu }}_{\ell }$ decays with hadronic tagging at Belle
• Measurement of the ratio of branching fractions $\mathcal{B}({\overline{B}}^0\to D^{\ast +}{\tau }^{-}{\overline{\nu }}_{\tau })/\mathcal{B}({\overline{B}}^0\to D^{\ast +}{\mu }^{-}{\overline{\nu }}_{\mu })$
• Measurement of the $\tau$ lepton polarization and $R(D^{\ast })$ in the decay $\bar{B}\to D^{\ast }{\tau }^{-}{\bar{\nu }}_{\tau }$
• On the B to D* tau nu Sensitivity to New Physics
• Flavor-phenomenology of two-Higgs-doublet models with generic Yukawa structure
• Measurement of the branching ratio of ${\bar{B}}^0\to D^{\ast +}{\tau }^{-}{\bar{\nu }}_{\tau }$ relative to ${\bar{B}}^0\to D^{\ast +}{\ell }^{-}{\bar{\nu }}_{\ell }$ decays with a semileptonic tagging method
• Implications of lepton flavor universality violations in B decays
• Measurement of the ratio of branching fractions $\mathcal{B}(B_c^{+}\to J/\psi {\tau }^{+}{\nu }_{\tau })$/$\mathcal{B}(B_c^{+}\to J/\psi {\mu }^{+}{\nu }_{\mu })$
• The $B\to D\ell \nu$ form factors at nonzero recoil and $|V_{cb}|$ from $2+1$-flavor lattice QCD
• Flavor models for $\bar{B}\to D^{(\ast )}\tau \bar{\nu }$
• The lifetime of the $B_c^{-}$ meson and the anomalies in $B\to D^{(\ast )}\tau \nu$
• Explaining B->Dτν, B->D*τνand B->τνin a 2HDM of type III
• $B\to Dl\nu$ Form Factors at Non-Zero Recoil and Extraction of $|V_{cb}|$
• A perturbed lepton-specific two-Higgs-doublet model facing experimental hints for physics beyond the Standard Model
• New physics in the weak interaction of $\bar{B}\to D^{(\ast )}\tau \bar{\nu }$
• Exclusive semileptonic and nonleptonic decays of the Bc meson
• $R(D^{\ast })$, $|V_{cb}|$, and the Heavy Quark Symmetry relations between form factors
• Non-abelian gauge extensions for B-decay anomalies
• Sensitivity to charged scalars in $B\to D^{(\ast )}\tau {\nu }_{\tau }$ and $B\to \tau {\nu }_{\tau }$ decays
• Scalar contributions to $b\to c(u)\tau \nu$ transitions
• Status of the Charged Higgs Boson in Two Higgs Doublet Models
• Study of exclusive semileptonic and nonleptonic decays of $B_c^{-}$ in a nonrelativistic quark model
• Phenomenology of an $SU(2)\times SU(2)\times U(1)$ model with lepton-flavour non-universality
• B -> D tau nu Branching Ratios: Opportunity for Lattice QCD and Hadron Colliders
• Diagnosing New Physics in $b\to c\tau {\nu }_{\tau }$ decays in the light of the recent BaBar result
• New Physics effect on $B_c\to J/\psi \tau \bar{\nu }$ in relation to the $R_{D^{(\ast )}}$ anomaly
• Charged Higgs Effects on Exclusive Semi-tauonic $\bbox{B}$ Decays
• Excesses of muon $g-2$, $R_{D^{(\ast )}}$, and $R_K$ in a leptoquark model
• The semileptonic decay Lambda_b -> Lambda_c + tau(-) + antinu_tau in the covariant confined quark model
• Constraint on the branching ratio of B_c \to tau nu from LEP1 and consequences for R(D(*)) anomaly
• Sources of CP Violation in the Two-Higgs Doublet Model
• Status of the semileptonic $B$ decays and muon g-2 in general 2HDMs with right-handed neutrinos
• Tau longitudinal polarization in B -> D tau nu and its role in the search for charged Higgs boson
• B decays with $\tau$-leptons in non-universal left-right models
• The B_c Meson Lifetime in the Light--Front Constituent Quark Model
• It's all right(-handed neutrinos): a new $W^{\prime }$ model for the $R_{D^{(\ast )}}$ anomaly
• Lepton universality violation and right-handed currents in $b\to c\tau \nu$
• ${\Lambda }_b\to {\Lambda }_c\tau {\bar{\nu }}_{\tau }$ Decay in the Standard Model and with New Physics
• Implications of new physics in the decays $B_c\to (J/\psi ,{\eta }_c)\tau \nu$
• Analyzing new physics in the decays ${\bar{B}}^0\to D^{(\ast )}{\tau }^{-}{\bar{\nu }}_{\tau }$ with form factors obtained from the covariant quark model
• A $Z^{\prime }$ Model for $b\to s\ell \bar{\ell }$ Flavour Anomalies
• Hints of R-parity violation in B decays into $\tau \nu$
• LHCb anomaly and $B$ physics in flavored Z${}^{\prime }$ models with flavored Higgs doublets
• $R(D^{(\ast )})$ from $W^{\prime }$ and right-handed neutrinos
• Probing new physics in ${\bar{B}}^0\to D^{(\ast )}{\tau }^{-}{\bar{\nu }}_{\tau }$ using the longitudinal, transverse, and normal polarization components of the tau lepton
• Charged-Higgs on $R_{D^{(\ast )}}$, $\tau$ polarization, and FBA
• \large\bf $B_c\to (J/\Psi ,{\eta }_c)\tau \nu$ semileptonic decays within Standard model and beyond
• B -> D^(*) tau nu and B -> tau nu in chiral U(1)' models with flavored multi Higgs doublets
• Mass matrix Ansatz and lepton flavor violation in the THDM-III
• Effective theory approach to new physics in $b\to u$ and $b\to c$ leptonic and semileptonic decays
• Constraints on the charged scalar effects using the forward-backward asymmetry on $B\to D^{(\ast )}\tau \overline{{\nu }_{\tau }}$
• Scalar doublet models confront $\tau$ and $b$ anomalies
• Measuring the fermionic couplings of the Higgs boson at future colliders as a probe of a non-minimal flavor structure
• ${\Lambda }_b\to {\Lambda }_c\tau {\bar{\nu }}_{\tau }$ decay in scalar and vector leptoquark scenarios
• Measurement of the shape of the ${\Lambda }_b^0\to {\Lambda }_c^{+}{\mu }^{-}\overline{\nu }$ differential decay rate
• Left-Right Symmetry and the Charged Higgs Bosons at the LHC
• Higgs EFT for 2HDM and beyond
• 'Bs --> Ds l nu' near zero recoil in and beyond the Standard Model
• $\bar{B}\to D\tau {\bar{\nu }}_{\tau }$ vs. $\bar{B}\to D\mu {\bar{\nu }}_{\mu }$
• Large $h\to bs$ in generic two-Higgs-doublet models
• Anomalies in (semi)-leptonic $B$ decays $B^{\pm }\to {\tau }^{\pm }\nu$, $B^{\pm }\to D{\tau }^{\pm }\nu$ and $B^{\pm }\to D^{\ast }{\tau }^{\pm }\nu$, and possible resolution with sterile neutrino
• Probing the R-parity violating supersymmetric effects in the exclusive b\to c\ell^-\barν_\ell decays
• Lepton angular asymmetries in semileptonic charmful B decays
• CP violation in $B\to D\tau {\nu }_{\tau }$ using multi-pion tau decays
• CP violating polarizations in semileptonic heavy meson decays
• Polarization Measurements and T-Violation in Exclusive Semileptonic B Decays
• Remarks on the Standard Model predictions for $R(D)$ and $R(D^{\ast })$
• Charged Higgs boson contribution to $B_q^{-}\to \ell \bar{\nu }$ and $\bar{B}\to (P,V)\ell \bar{\nu }$ in a generic two-Higgs doublet model
• Exclusive Decays and Lifetime of B_c Meson in QCD sum rules
• Nonstandard interactions of tau neutrino via charged Higgs and $W^{\prime }$ contribution
• CP violating transverse lepton polarizaion in $B\to D^{(\ast )}\ell \bar{\nu }$ including tensor interactions

Cited by in corpus (24)

• Impact of polarization observables and $B_c\to \tau \nu$ on new physics explanations of the $b\to c\tau \nu$ anomaly
• Addendum to "Impact of polarization observables and $B_c\to \tau \nu$ on new physics explanations of the $b\to c\tau \nu$ anomaly"
• $B$ Flavour Anomalies: 2021 Theoretical Status Report
• $b\to s{\ell }^{+}{\ell }^{-}$ Transitions in Two-Higgs-Doublet Models
• $b\to c\tau \nu$ Transitions in the Standard Model Effective Field Theory
• Investigation of Effects of New Physics in ${\Lambda }_b\to {\Lambda }_c\tau {\bar{\nu }}_{\tau }$ Decay
• Charged current $b\to c\tau {\bar{\nu }}_{\tau }$ anomalies in a general $W^{\prime }$ boson scenario
• Test of the $R(D^{(\ast )})$ anomaly at the LHC
• Towards ruling out the charged Higgs interpretation of the $R_{D^{(\ast )}}$ anomaly
• Common explanation to the $R_{K^{(\ast )}}$, $R_{D^{(\ast )}}$ and ${\epsilon }^{\prime }/\epsilon$ anomalies in a 3HDM+${\nu }_R$ and connections to neutrino physics
• Likelihood analysis of the flavour anomalies and $g-2$ in the general two Higgs doublet model
• Investigation of Effects of New Physics in $c\to (s,d){\ell }^{+}{\nu }_{\ell }$ Transitions
• A Measurable Angular Distribution for $\bar{B}\to D^{\ast }{\tau }^{-}{\bar{\nu }}_{\tau }$ Decays
• CP Violation in ${\bar{B}}^0\to D^{\ast +}{\mu }^{-}{\bar{\nu }}_{\mu }$
• Neutrino Masses in a Two Higgs Doublet Model with a U(1) Gauge Symmetry
• Revival of $H^{-}$ interpretation of $R_{D^{(\ast )}}$ anomaly and closing low mass window
• Coup de grace to the charged Higgs solution of $P_5^{\prime }$ and $R_{D^{(\ast )}}$ discrepancies
• Analysing the charged scalar boson contribution to the charged-current $B$ meson anomalies
• Interplay of the charged Higgs effects in $R_{D^{(\ast )}}$, $b\to s{\ell }^{+}{\ell }^{-}$ and $W$-mass
• Relations between $b\to c\tau \nu$ Decay Modes in Scalar Models
• Lepton Flavor Violating $B\to K_2^{\ast }(1430){\mu }^{\pm }{\tau }^{\mp }$ Decays
• Polarization in (quasi-)two-body decays and new physics
• Status of G2HDM with right handed neutrino coupling in the light of $b\to c\tau \nu$ anomalies
• Observation of $D^{+}\to K_S^0{\pi }^0{\mu }^{+}{\nu }_{\mu }$, Test of Lepton Flavor Universality and First Angular Analysis of $D^{+}\to {\bar{K}}^{\ast }(892{)}^0{\ell }^{+}{\nu }_{\ell }$