Revisiting the new-physics interpretation of the $b\to c\tau \nu$ data

Abstract

We revisit the status of the new-physics interpretations of the anomalies in semileptonic $B$ decays in light of the new data reported by Belle on the lepton-universality ratios $R_{D^{(\ast )}}$ using the semileptonic tag and on the longitudinal polarization of the $D^{\ast }$ in $B\to D^{\ast }\tau \nu$, $F_L^{D^{\ast }}$. The preferred solutions involve new left-handed currents or tensor contributions. Interpretations with pure right-handed currents are disfavored by the LHC data, while pure scalar models are disfavored by the upper limits derived either from the LHC or from the $B_c$ lifetime. The observable $F_L^{D^{\ast }}$ also gives an important constraint leading to the exclusion of large regions of parameter space. Finally, we investigate the sensitivity of different observables to the various scenarios and conclude that a measurement of the tau polarization in the decay mode $B\to D\tau \nu$ would effectively discriminate among them.

arXiv commentmatches publised version

References in corpus (80)

• Weak Decays Beyond Leading Logarithms
• Dimension-Six Terms in the Standard Model Lagrangian
• Physics of leptoquarks in precision experiments and at particle colliders
• B-physics anomalies: a guide to combined explanations
• One Leptoquark to Rule Them All: A Minimal Explanation for $R_{D^{(\ast )}}$, $R_K$ and $(g-2{)}_{\mu }$
• On the B to D* tau nu Sensitivity to New Physics
• Dispersive Bounds on the Shape of B -> D^(*) l nu Form Factors
• Simultaneous Explanation of $R(D^{(\ast )})$ and $b\to s{\mu }^{+}{\mu }^{-}$: The Last Scalar Leptoquarks Standing
• Anomalies in $B$-decays and $U(2)$ flavour symmetry
• Vector leptoquark resolution of $R_K$ and $R_{D^{(\ast )}}$ puzzles
• A three-site gauge model for flavor hierarchies and flavor anomalies
• Confronting lepton flavor universality violation in B decays with high-$p_T$ tau lepton searches at LHC
• Constraints on Form Factors For Exclusive Semileptonic Heavy to Light Meson Decays
• $B$ Meson Anomalies in a Pati-Salam Model within the Randall-Sundrum Background
• Low-Energy Effective Field Theory below the Electroweak Scale: Anomalous Dimensions
• The lifetime of the $B_c^{-}$ meson and the anomalies in $B\to D^{(\ast )}\tau \nu$
• $B\to Dl\nu$ Form Factors at Non-Zero Recoil and Extraction of $|V_{cb}|$
• Closing the window on single leptoquark solutions to the $B$-physics anomalies
• Baryon Number and Lepton Universality Violation in Leptoquark and Diquark Models
• Semileptonic decays of light quarks beyond the Standard Model
• $R(D^{\ast })$, $|V_{cb}|$, and the Heavy Quark Symmetry relations between form factors
• Leptoquark model to explain the $B$-physics anomalies, $R_K$ and $R_D$
• Importance of Loop Effects in Explaining the Accumulated Evidence for New Physics in B Decays with a Vector Leptoquark
• Sensitivity to charged scalars in $B\to D^{(\ast )}\tau {\nu }_{\tau }$ and $B\to \tau {\nu }_{\tau }$ decays
• Scalar leptoquarks from GUT to accommodate the $B$-physics anomalies
• Revisiting Lepton Flavour Universality in B Decays
• B-decay Anomalies in a Composite Leptoquark Model
• Scalar contributions to $b\to c(u)\tau \nu$ transitions
• Renormalization-group evolution of new physics contributions to (semi)leptonic meson decays
• Extraction of $|V_{cb}|$ from $B\to D^{(\ast )}\ell {\nu }_{\ell }$ and the Standard Model predictions of $R(D^{(\ast )})$
• Weak decays of the B_c meson to charmonium and D mesons in the relativistic quark model
• $R_{D^{(\ast )}}$ anomaly: A possible hint for natural supersymmetry with $R$-parity violation
• Study of exclusive semileptonic and nonleptonic decays of $B_c^{-}$ in a nonrelativistic quark model
• $R(D^{(\ast )})$ in a general two Higgs doublet model
• Covariant Light-Front Approach for $B_c$ transition form factors
• Reconsidering the One Leptoquark solution: flavor anomalies and neutrino mass
• A Global Likelihood for Precision Constraints and Flavour Anomalies
• B physics Beyond the Standard Model at One Loop: Complete Renormalization Group Evolution below the Electroweak Scale
• Revisiting the one leptoquark solution to the $R(D^{(\ast )})$ anomalies and its phenomenological implications
• Charged Higgs Effects on Exclusive Semi-tauonic $\bbox{B}$ Decays
• New Physics effect on $B_c\to J/\psi \tau \bar{\nu }$ in relation to the $R_{D^{(\ast )}}$ anomaly
• Model-Independent Extraction of |V_{cb}| Using Dispersion Relations
• The Mono-Tau Menace: From $B$ Decays to High-$p_T$ Tails
• Global fit to $b\to c\tau \nu$ transitions
• Revisiting the vector leptoquark explanation of the B-physics anomalies
• Impact of polarization observables and $B_c\to \tau \nu$ on new physics explanations of the $b\to c\tau \nu$ anomaly
• Constraint on the branching ratio of B_c \to tau nu from LEP1 and consequences for R(D(*)) anomaly
• Left-Right SU(4) Vector Leptoquark Model for Flavor Anomalies
• Low-energy signatures of the ${\mathrm{PS}}^3$ model: from $B$-physics anomalies to LFV
• Combined explanations of B-physics anomalies: the sterile neutrino solution
• High-pT Signatures in Vector-Leptoquark Models
• Semileptonic decays $B_c\to ({\eta }_c,J/\Psi )l\nu$ in the perturbative QCD approach
• On the Importance of Electroweak Corrections for B Anomalies
• 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
• Constraining new physics in $b\to c\ell \nu$ transitions
• Addressing the B-physics anomalies in a fundamental Composite Higgs Model
• Lepton-flavor universality violation in $R_K$ and $R_{D^{(\ast )}}$ from warped space
• New physics solutions for $R_D$ and $R_{D^{\ast }}$
• 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 $b\to c\tau \nu$
• Implications of new physics in the decays $B_c\to (J/\psi ,{\eta }_c)\tau \nu$
• $R(D^{(\ast )})$ from $W^{\prime }$ and right-handed neutrinos
• Tau properties in $B\to D\tau \nu$ from visible final-state kinematics
• Signatures of a nonstandard Higgs from flavor physics
• Anatomy of $b\to c\tau \nu$ anomalies
• \large\bf $B_c\to (J/\Psi ,{\eta }_c)\tau \nu$ semileptonic decays within Standard model and beyond
• Implications of scalar and tensor explanations of $R_{D^{(\ast )}}$
• $b\to c\tau {\nu }_{\tau }$ Decays: A Catalogue to Compare, Constrain, and Correlate New Physics Effects
• B-meson charged current anomalies: the post-Moriond status
• Right-handed Neutrinos and $R(D^{(\ast )})$
• A Theory of $R(D^{\ast },D)$ Anomaly With Right-Handed Currents
• Asymmetry Observables and the Origin of $R_{D^{(\ast )}}$ Anomalies
• Test of the $R(D^{(\ast )})$ anomaly at the LHC
• Relativistic corrections to the form factors of $B_c$ into $S$-wave Charmonium
• Model-Independent Bounds on $R(J/\psi )$
• Resolution of $R_D$/$R_{D^{\ast }}$ puzzle
• QCD corrections to the $B_c$ to charmonia semi-leptonic decays
• Phenomenology of flavorful composite vector bosons in light of $B$ anomalies
• The longitudinal leading-twist distribution amplitude of $J/\psi$ meson within background field theory

Cited by in corpus (59)

• Hadronic vacuum polarization: $(g-2{)}_{\mu }$ versus global electroweak fits
• 50 Years of Quantum Chromodynamics
• Beta decays as sensitive probes of lepton flavor universality
• Drell-Yan Tails Beyond the Standard Model
• Correlating $h\to {\mu }^{+}{\mu }^{-}$ to the Anomalous Magnetic Moment of the Muon via Leptoquarks
• Challenges in Semileptonic B Decays
• Searching for Lepton Flavour (Universality) Violation and Collider Signals from a Singly-Charged Scalar Singlet
• Combined Constraints on First Generation Leptoquarks
• Scalar Leptoquarks in Leptonic Processes
• First-Generation New Physics in Simplified Models: From Low-Energy Parity Violation to the LHC
• The role of right-handed neutrinos in $b\to c\tau \bar{\nu }$ anomalies
• Unveiling Hidden Physics at the LHC
• Effective Theory Approach to New Physics with Flavour: General Framework and a Leptoquark Example
• Combined Explanation of the $Z\to b\bar{b}$ Forward-Backward Asymmetry, the Cabibbo Angle Anomaly, $\tau \to \mu \nu \nu$ and $b\to s{\ell }^{+}{\ell }^{-}$ Data
• Impact of ${\Lambda }_b\to {\Lambda }_c\tau \nu$ measurement on New Physics in $b\to cl\nu$ transitions
• Leptoquarks in Oblique Corrections and Higgs Signal Strength: Status and Prospects
• Testing Lepton Flavor Universality with Pion, Kaon, Tau, and Beta Decays
• Disentangling new physics in $K\to \pi \bar{\nu }\nu$ and $B\to K(K^{\ast })\bar{\nu }\nu$ observables
• Probing lepton number violating interactions in rare kaon decays
• Resonant third-generation leptoquark signatures at the Large Hadron Collider
• Global fit to $b\to c\tau \nu$ anomalies as of Spring 2024
• Flavor anomalies from asymptotically safe gravity
• A comprehensive study on the semileptonic decay of heavy flavor mesons
• The Forward-Backward Asymmetry in $B\to D^{\ast }\ell \nu$: One more hint for Scalar Leptoquarks?
• Revisiting the $B$-physics anomalies in $R$-parity violating MSSM
• Symmetries in $B\to D^{\ast }\ell \nu$ angular observables
• A Complete Framework for Tau Polarimetry in $B\to D^{(\ast )}\tau \nu$ Decays
• The role of right-handed neutrinos in $b\to c\tau (\pi {\nu }_{\tau },\rho {\nu }_{\tau },\mu {\bar{\nu }}_{\mu }{\nu }_{\tau }){\bar{\nu }}_{\tau }$ from visible final-state kinematics
• $B$ anomalies under the lens of electroweak precision
• Correlating Non-Resonant Di-Electron Searches at the LHC to the Cabibbo-Angle Anomaly and Lepton Flavour Universality Violation
• Analysing the charged scalar boson contribution to the charged-current $B$ meson anomalies
• Combined explanations of $B$-physics anomalies, $(g-2{)}_{e,\mu }$ and neutrino masses by scalar leptoquarks
• New physics in $s\to d$ semileptonic transitions: rare hyperon vs. kaon decays
• New physics and the tau polarization vector in $b\to c\tau {\bar{\nu }}_{\tau }$ decays
• One colorful resolution to the neutrino mass generation, three lepton flavor universality anomalies, and the Cabibbo angle anomaly
• Drell-Yan production in third-generation gauge vector leptoquark models at NLO+PS in QCD
• Addendum to: Combined Constraints on First Generation Leptoquarks
• Next-to-Leading-Order QCD Matching for $\Delta F=2$ Processes in Scalar Leptoquark Models
• Implication of $b\to c\tau \nu$ flavor anomalies on $B_s\to D_s^{\ast }\tau \nu$ decay observables
• Scrutinizing New Physics in Semi-leptonic $B_c\to J/\psi \tau \nu$ Decay
• New physics footprints in the angular distribution of $B_s\to D_s^{\ast }(\to D_s\gamma ,D_s\pi )\tau \nu$ decays
• $D^{\ast }$ Polarization as an Additional Constraint on New Physics in the $b\to c\tau {\bar{\nu }}_{\tau }$ Transition
• ${\bar{B}}_c\to {\eta }_c$, ${\bar{B}}_c\to J/\psi$ and $\bar{B}\to D^{(\ast )}$ semileptonic decays including new physics
• Clustering of $\bar{B}\to D^{(\ast )}{\tau }^{-}{\bar{\nu }}_{\tau }$ kinematic distributions with ClusterKinG
• New physics effects on ${\Lambda }_b\to {\Lambda }_c^{\ast }\tau {\bar{\nu }}_{\tau }$ decays
• Analyzing the semileptonic and nonleptonic $B_c\to J/\psi ,{\eta }_c$ decays
• Probing New Physics in light of recent developments in $b\to c\ell \nu$ transitions
• 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
• Extra gauge bosons and lepton flavor universality violation in ${\rm Y}$ and $B$ meson decays
• Investigating the effect of $U_1$ vector leptoquark on $b\to u\tau \bar{\nu }$ mediated $B$ decays
• A unique discrimination between new physics scenarios in $b\to s{\mu }^{+}{\mu }^{-}$ anomalies
• An Imperative study of the angular observables in ${\Lambda }_b\to {\Lambda }_c^{+}(\to \Lambda {\pi }^{+}){\ell }^{-}{\bar{\nu }}_{\ell }$ decay and probing the footprint of new physics
• Relations between $b\to c\tau \nu$ Decay Modes in Scalar Models
• Analysis of $b\to c\tau {\bar{\nu }}_{\tau }$ anomalies using weak effective Hamiltonian with complex couplings
• Lepton Flavor Violating $B\to K_2^{\ast }(1430){\mu }^{\pm }{\tau }^{\mp }$ Decays
• Meson exchange between initial and final state and the $R_D$ ratio in the $\bar{B}\to D\bar{\nu }\ell ({\bar{\nu }}_{\tau }\tau )$ reactions
• 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
• The Angular Observables of ${\Lambda }_b\to {\Lambda }_c(\to {\Lambda }^0{\pi }^{+}){\tau }^{-}(\to {\pi }^{-}{\nu }_{\tau }){\bar{\nu }}_{\tau }$ within the Paradigm of FCCC Anomalies