New physics solutions for $R_D$ and $R_{D^{\ast }}$

Abstract

Recent measurements of $R_{D^{\ast }}$ have reduced tension with the Standard Model prediction. Taking all the present data into account, we obtain the values of the Wilson coefficients of each new physics four-fermion operator of a given Lorentz structure. We find that the combined data rule out most of the solutions based on scalar/pseudoscalar operators. By studying the inter-relations between different solutions, we find that there are only four allowed solutions, which are based on operators with $(V-A)$, linear combination of $(V-A)$ and $(V+A)$, tensor and linear combination of scalar/pseudoscalar and tensor structure. We demonstrate that the need for new physics is driven by those measurement of $R_D$ and $R_{D^{\ast }}$ where the $\tau$ lepton is not studied. Further, we show that new physics only in $b\to c\mu \bar{\nu }$ is not compatible with the full set of observables in the decays $B\to Dl\bar{\nu }$ and $B\to D^{\ast }l\bar{\nu }$.

16 pages, 1 figure (Accepted for publication in JHEP)

References in corpus (23)

• On the B to D* tau nu Sensitivity to New Physics
• Implications of lepton flavor universality violations in B decays
• The lifetime of the $B_c^{-}$ meson and the anomalies in $B\to D^{(\ast )}\tau \nu$
• $R(D^{\ast })$, $|V_{cb}|$, and the Heavy Quark Symmetry relations between form factors
• B-decay Anomalies in a Composite Leptoquark Model
• Extraction of $|V_{cb}|$ from $B\to D^{(\ast )}\ell {\nu }_{\ell }$ and the Standard Model predictions of $R(D^{(\ast )})$
• Simultaneous Explanation of the $R_K$ and $R_{D^{(\ast )}}$ Puzzles: a Model Analysis
• B-meson decay constants: a more complete picture from full lattice QCD
• Constraint on the branching ratio of B_c \to tau nu from LEP1 and consequences for R(D(*)) anomaly
• Explaining the $R_K$ and $R_{D^{(\ast )}}$ anomalies with vector leptoquarks
• It's all right(-handed neutrinos): a new $W^{\prime }$ model for the $R_{D^{(\ast )}}$ anomaly
• 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
• New Physics in the Visible Final States of $B\to D^{(\ast )}\tau \nu$
• The Azimuthal $B\to D^{\ast }{\tau }^{-}\overline{{\nu }_{\tau }}$ Angular Distribution with Tensor Operators
• 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
• Minimal unified resolution to $R_{K^{(\ast )}}$ and $R(D^{(\ast )})$ anomalies with lepton mixing
• Minimal Flavour Violation for Leptoquarks
• Resolution of $R_D$/$R_{D^{\ast }}$ puzzle
• Phenomenology of flavorful composite vector bosons in light of $B$ anomalies
• $B$ decay anomalies from nonabelian local horizontal symmetry
• Remarks on the Standard Model predictions for $R(D)$ and $R(D^{\ast })$
• Semileptonic decays of $B_c$ meson to $P$-wave charmonium states

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• Global fit to $b\to c\tau \nu$ transitions
• 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"
• Footprints of New Physics in $b\to c\tau \nu$ Transitions
• $B$ Flavour Anomalies: 2021 Theoretical Status Report
• Revisiting the new-physics interpretation of the $b\to c\tau \nu$ data
• Challenges in Semileptonic B Decays
• A near-minimal leptoquark model for reconciling flavour anomalies and generating radiative neutrino masses
• On lepton flavour universality in semileptonic $B_c\to {\eta }_c,J/\psi$ decays
• A Theory of $R(D^{\ast },D)$ Anomaly With Right-Handed Currents
• Asymmetry Observables and the Origin of $R_{D^{(\ast )}}$ Anomalies
• $b\to c\tau \nu$ Transitions in the Standard Model Effective Field Theory
• Charged current $b\to c\tau {\bar{\nu }}_{\tau }$ anomalies in a general $W^{\prime }$ boson scenario
• Investigation of Effects of New Physics in ${\Lambda }_b\to {\Lambda }_c\tau {\bar{\nu }}_{\tau }$ Decay
• Impact of ${\Lambda }_b\to {\Lambda }_c\tau \nu$ measurement on New Physics in $b\to cl\nu$ transitions
• Lepton flavor universality violation in semileptonic tree level weak transitions
• A nonunitary interpretation for a single vector leptoquark combined explanation to the $B$-decay anomalies
• Model independent investigation of the $R_{J/\psi ,{\eta }_c}$ and ratios of decay widths of semileptonic $B_c$ decays into a P-wave charmonium
• R-parity violating solutions to the $R_{D^{(\ast )}}$ anomaly and their GUT-scale unifications
• On the Minimal Flavor Violating Leptoquark Explanation of the $R_{D^{(\ast )}}$ Anomaly
• Investigation of Effects of New Physics in $c\to (s,d){\ell }^{+}{\nu }_{\ell }$ Transitions
• 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
• A Measurable Angular Distribution for $\bar{B}\to D^{\ast }{\tau }^{-}{\bar{\nu }}_{\tau }$ Decays
• CP Violation in ${\bar{B}}^0\to D^{\ast +}{\mu }^{-}{\bar{\nu }}_{\mu }$
• The measurable angular distribution of ${\Lambda }_b^0\to {\Lambda }_c^{+}(\to {\Lambda }^0{\pi }^{+}){\tau }^{-}(\to {\pi }^{-}{\nu }_{\tau }){\bar{\nu }}_{\tau }$ decay
• Lepton Flavor Universality tests through angular observables of $\overline{B}\to D^{(\ast )}\ell \overline{\nu }$ decay modes
• Probing effects of new physics in ${\Lambda }_b^0\to {\Lambda }_c^{+}{\mu }^{-}{\bar{\nu }}_{\mu }$ decays
• Anomalies in B mesons decays: A phenomenological approach
• Implication of $R_{D^{(\ast )}}$ anomalies on semileptonic decays of ${\Sigma }_b$ and ${\Omega }_b$ baryons
• Signatures of complex new physics in $b\to c\tau \bar{\nu }$ transitions
• Consequences of $b\to s{\mu }^{+}{\mu }^{-}$ anomalies on $B\to K^{(\ast )}\nu \bar{\nu }$, $B_s\to (\eta ,{\eta }^{\prime })\nu \bar{\nu }$ and $B_s\to \varphi \nu \bar{\nu }$ decay observables
• New physics effects in purely leptonic $B_s^{\ast }$ decays
• B Anomalies and Leptoquarks at the LHC: Beyond the Lepton-Quark Final State
• Implication of $b\to c\tau \nu$ flavor anomalies on $B_s\to D_s^{\ast }\tau \nu$ decay observables
• New physics footprints in the angular distribution of $B_s\to D_s^{\ast }(\to D_s\gamma ,D_s\pi )\tau \nu$ decays
• The fate of $V_1$ vector leptoquarks: the impact of future flavour data
• New physics in the angular distribution of $B_c^{-}\to J/\psi (\to {\mu }^{+}{\mu }^{-}){\tau }^{-}(\to {\pi }^{-}{\nu }_{\tau }){\bar{\nu }}_{\tau }$ decay
• $B_c^{-}\to J/\psi (\to {\mu }^{+}{\mu }^{-}){\tau }^{-}(\to {\pi }^{-}{\nu }_{\tau },{\rho }^{-}{\nu }_{\tau },{\ell }^{-}{\bar{\nu }}_{\ell }{\nu }_{\tau }){\bar{\nu }}_{\tau }$ decays with visible final-state kinematics
• Investigation of rare semileptonic $B_c$ decays into $(D_{(}s,d{)}^{(}(\ast ))){\mu }^{+}{\mu }^{-}$ decays with non-universal $Z^{\prime }$ effect
• Effects of nonstandard interaction on temporal and spatial correlations in neutrino oscillations
• 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
• Flavor signatures of complex anomalous $tcZ$ couplings
• Explaining the $\mathcal{R}(D)$ and $\mathcal{R}(D^{\ast })$ Anomalies in the $B-L$ Supersymmetric Standard Model with Inverse Seesaw
• Polarization amplitudes in ${\tau }^{-}\to {\nu }_{\tau }VP$ decay beyond the standard model
• New Physics solutions for $b\to c\tau \bar{\nu }$ anomalies after Moriond 2019
• Addressing the $R_{\tau /\mu ,e}\left(D^{(\ast )}\right)$ puzzle through New Physics four-fermion operators and their impact on ${\Lambda }_b\to {\Lambda }_c\tau {\bar{\nu }}_{\tau }$ decay
• Resolving $R_D$ and $R_{D^{\ast }}$ anomalies
• $B_s^{\ast }\to l^{+}{l}^{-}$ decays in light of recent $B$ anomalies
• ${\eta }_c$ leading-twist distribution amplitude and the $B_c\to {\eta }_c\ell {\bar{\nu }}_{\ell }$ semileptonic decays using QCD Sum Rules