Probing New Physics in light of recent developments in $b\to c\ell \nu$ transitions

Abstract

The experimental studies of the observables associated with the $b\to c$ transitions in the semileptonic $B-$ meson decays at BaBar, Belle and LHCb have shown some deviations from the Standard Model (SM) predictions, consequently, providing a handy tool to probe the possible new physics (NP). In this context, we have first revisited the impact of recent measurements of $R(D^{(\ast )})$ and $R({\Lambda }_c)$ on the parametric space of the NP scenarios. In addition, we have included the $R(J/\psi )$ data in the analysis and found that their influence on the best-fit points and the parametric space is mild. Using the recent HFLAV data, after validating the well established sum rule of $R({\Lambda }_c)$, we derived the similar sum rule for $R(J/\psi )$. Furthermore, according to the updated data, we have modified the correlation among the different observables, giving us their interesting interdependence. Finally, to discriminate the various NP scenarios, we have plotted the different angular observables and their ratios for $B\to D^{\ast }\tau {\nu }_{\tau }$ against the transfer momentum square $\left(q^2\right)$, using the $1\sigma$ and $2\sigma$ parametric space of considered NP scenarios. By implementing the collider bounds on NP Wilson coefficients, we find that, in the parametric space of some NP WCs is significantly restrained. To see the clear influence of NP on the amplitude of the angular observables, we have also calculated their numerical values in different $q^2$ bins and shown them through the bar plots. We hope their precise measurements will help to discriminate various NP scenarios.

arXiv comment33 pages, 9 figures, 8 Tables, Final version accepted in PTEP

References in corpus (93)

• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of summer 2016
• Test of lepton universality using $B^{+}\to K^{+}{\ell }^{+}{\ell }^{-}$ decays
• 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 $\mathcal{B}({\overline{B}}^0\to D^{\ast +}{\tau }^{-}{\overline{\nu }}_{\tau })/\mathcal{B}({\overline{B}}^0\to D^{\ast +}{\mu }^{-}{\overline{\nu }}_{\mu })$
• B-physics anomalies: a guide to combined explanations
• One Leptoquark to Rule Them All: A Minimal Explanation for $R_{D^{(\ast )}}$, $R_K$ and $(g-2{)}_{\mu }$
• 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
• Dispersive Bounds on the Shape of B -> D^(*) l nu Form Factors
• 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
• Effective field theory approach to $b\to s\ell {\ell }^{(\prime )}$, $B\to K^{(\ast )}\nu \bar{\nu }$ and $B\to D^{(\ast )}\tau \nu$ with third generation couplings
• 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
• Testing leptoquark models in $\bar{B}\to D^{(\ast )}\tau \bar{\nu }$
• A three-site gauge model for flavor hierarchies and flavor anomalies
• $B$ Meson Anomalies in a Pati-Salam Model within the Randall-Sundrum Background
• Probing Novel Scalar and Tensor Interactions from (Ultra)Cold Neutrons to the LHC
• Measurement of the ratio of branching fractions $\mathcal{B}(B_c^{+}\to J/\psi {\tau }^{+}{\nu }_{\tau })$/$\mathcal{B}(B_c^{+}\to J/\psi {\mu }^{+}{\nu }_{\mu })$
• Gauge leptoquark as the origin of B-physics anomalies
• The $B\to D\ell \nu$ form factors at nonzero recoil and $|V_{cb}|$ from $2+1$-flavor lattice QCD
• 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
• A perturbed lepton-specific two-Higgs-doublet model facing experimental hints for physics beyond the Standard Model
• Baryon Number and Lepton Universality Violation in Leptoquark and Diquark Models
• New physics in the weak interaction of $\bar{B}\to D^{(\ast )}\tau \bar{\nu }$
• Measurement of $\mathcal{R}(D)$ and $\mathcal{R}(D^{\ast })$ with a semileptonic tagging method
• Measurement of the $\tau$ lepton polarization and $R(D^{\ast })$ in the decay $\bar{B}\to D^{\ast }{\tau }^{-}{\bar{\nu }}_{\tau }$ with one-prong hadronic $\tau$ decays at Belle
• Non-abelian gauge extensions for B-decay anomalies
• ${\Lambda }_b\to p{\ell }^{-}{\bar{\nu }}_{\ell }$ and ${\Lambda }_b\to {\Lambda }_c{\ell }^{-}{\bar{\nu }}_{\ell }$ form factors from lattice QCD with relativistic heavy quarks
• Sensitivity to charged scalars in $B\to D^{(\ast )}\tau {\nu }_{\tau }$ and $B\to \tau {\nu }_{\tau }$ decays
• Third Family Quark-Lepton Unification at the TeV Scale
• B-decay Anomalies in a Composite Leptoquark Model
• Renormalization-group evolution of new physics contributions to (semi)leptonic meson decays
• Scalar contributions to $b\to c(u)\tau \nu$ transitions
• $R_{D^{(\ast )}}$ anomaly: A possible hint for natural supersymmetry with $R$-parity violation
• Simultaneous Explanation of the $R_K$ and $R_{D^{(\ast )}}$ Puzzles: a Model Analysis
• B_c Decays and Lifetime in QCD Sum Rules
• Physics of B_c mesons
• Leptoquark Flavor Patterns & B Decay Anomalies
• $R(D^{(\ast )})$ in a general two Higgs doublet model
• Reconsidering the One Leptoquark solution: flavor anomalies and neutrino mass
• B -> D tau nu Branching Ratios: Opportunity for Lattice QCD and Hadron Colliders
• Update of $|V_{cb}|$ from the $\bar{B}\to D^{\ast }\ell \bar{\nu }$ form factor at zero recoil with three-flavor lattice QCD
• The Mono-Tau Menace: From $B$ Decays to High-$p_T$ Tails
• 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
• Constraint on the branching ratio of B_c \to tau nu from LEP1 and consequences for R(D(*)) anomaly
• Pati-Salam explanations of the B-meson anomalies
• The $B_c$ Meson Lifetime
• Combined explanations of B-physics anomalies: the sterile neutrino solution
• Phenomenology of ${\Lambda }_b\to {\Lambda }_c\tau {\bar{\nu }}_{\tau }$ using lattice QCD calculations
• Addendum to "Impact of polarization observables and $B_c\to \tau \nu$ on new physics explanations of the $b\to c\tau \nu$ anomaly"
• Constraining new physics in $b\to c\ell \nu$ transitions
• Tau longitudinal polarization in B -> D tau nu and its role in the search for charged Higgs boson
• Addressing the B-physics anomalies in a fundamental Composite Higgs Model
• B decays with $\tau$-leptons in non-universal left-right models
• B-decay anomalies in Pati-Salam SU(4)
• 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 $B_c\to (J/\psi ,{\eta }_c)\tau \nu$
• Hints of R-parity violation in B decays into $\tau \nu$
• New Physics in the Visible Final States of $B\to D^{(\ast )}\tau \nu$
• Revisiting the new-physics interpretation of the $b\to c\tau \nu$ data
• D* polarization as a probe to discriminate new physics in B --> D* tau nubar
• $D^{\ast }$ polarization vs. $R_{D^{(\ast )}}$ anomalies in the leptoquark models
• Observation of the decay ${\Lambda }_b^0\to {\Lambda }_c^{+}{\tau }^{-}{\overline{\nu }}_{\tau }$
• Charged-Higgs on $R_{D^{(\ast )}}$, $\tau$ polarization, and FBA
• The Inclusive $\bar{B}\to \tau \bar{\nu }X$ Decay in Two Higgs Doublet Models
• $R(J/\psi )$ and $B_c^{-}\to J/\psi {\ell }^{-}{\bar{\nu }}_{\ell }$ Lepton Flavor Universality Violating Observables from Lattice QCD
• \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
• Effective theory approach to new physics in $b\to u$ and $b\to c$ leptonic and semileptonic decays
• Inclusive $B_c$ Decays As A QCD Lab
• The role of right-handed neutrinos in $b\to c\tau \bar{\nu }$ anomalies
• The lifetime of B_c-meson and some relevant problems
• Model independent constraints on leptoquarks from b -> s l+ l- processes
• Tension in the inclusive versus exclusive determinations of $|V_{cb}|$: a possible role of new physics
• Charged current $b\to c\tau {\bar{\nu }}_{\tau }$ anomalies in a general $W^{\prime }$ boson scenario
• Model-Independent Bounds on $R(J/\psi )$
• Lepton flavor universality violation in semileptonic tree level weak transitions
• Non-resonant new physics search at the LHC for the $b\to c\tau \nu$ anomalies
• A comprehensive study on the semileptonic decay of heavy flavor mesons
• Signature of Lepton flavor universality violation in $B_s\to D_s\tau \nu$ semileptonic decays
• Relativistic description of the semileptonic decays of bottom mesons
• New physics in inclusive $B\to X_c\ell \bar{\nu }$ decay in light of $R(D^{(\ast )})$ measurements
• Analysing the charged scalar boson contribution to the charged-current $B$ meson anomalies
• New physics in inclusive semileptonic $B$ decays including nonperturbative corrections
• $R(D^{(\ast )})$ and $\mathcal{B}r(B\to \tau {\nu }_{\tau })$ in a Flipped/Lepton-Specific 2HDM with anomalously enhanced charged Higgs coupling to $\tau$/b
• Anomalies in Weak Decays of Hadrons Containing a b Quark

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• Chirality structure of vector like new physics operators in charged current transitions
• 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
• The effects of polarization on the observables in the decay ${\Xi }_{cc}^{++}\to {\Xi }_c^{+}\bar{\ell }{\nu }_{\ell }$