Exclusive decays $B\to {\ell }^{-}\bar{\nu }$ and $B\to D^{(\ast )}{\ell }^{-}\bar{\nu }$ in the covariant quark model

Abstract

We study the exclusive leptonic and semileptonic $B$ decays $B\to {\ell }^{-}\bar{\nu }$ and $B\to D^{(\ast )}{\ell }^{-}\bar{\nu }$ in the framework of the covariant quark model with built-in infrared confinement. We compute the relevant form factors in the full kinematical momentum transfer region. The calculated form factors are used to evaluate branching fractions and polarization observables of the above transitions. We compare our results with experimental data and results from other theoretical studies.

48 pages, 26 figures. References and discussion added. Accepted by Phys.Rev.D for publication

References in corpus (21)

• 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 $\mathcal{B}({\overline{B}}^0\to D^{\ast +}{\tau }^{-}{\overline{\nu }}_{\tau })/\mathcal{B}({\overline{B}}^0\to D^{\ast +}{\mu }^{-}{\overline{\nu }}_{\mu })$
• On the B to D* tau nu Sensitivity to New Physics
• 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
• Implications of lepton flavor universality violations in B decays
• New physics in the weak interaction of $\bar{B}\to D^{(\ast )}\tau \bar{\nu }$
• Evidence for B- -> tau- nu_tau-bar with a Hadronic Tagging Method Using the Full Data Sample of Belle
• Study of B --> pi l nu and B --> rho l nu Decays and Determination of |V_ub|
• B -> D tau nu Branching Ratios: Opportunity for Lattice QCD and Hadron Colliders
• The semileptonic decay Lambda_b -> Lambda_c + tau(-) + antinu_tau in the covariant confined quark model
• Relativistic treatment of the decay constants of light and heavy mesons
• Beauty mesons in lattice QCD with exact chiral symmetry
• Decay constants of the charmed vector mesons $D^{\ast }$ and $D_s^{\ast }$ from QCD sum rules
• New analysis of semileptonic B decays in the relativistic quark model
• On the meson mass spectrum in the covariant confined quark model
• Form factors of the B-S-transitions in the covariant quark model
• Lepton-mass effects in the decays $H\to Z{Z}^{\ast }\to {\ell }^{+}{\ell }^{-}{\tau }^{+}{\tau }^{-}$ and $H\to W{W}^{\ast }\to \ell \nu \tau {\nu }_{\tau }$
• Exclusive weak B decays involving $\tau$ lepton in the relativistic quark model
• FaRe: a Mathematica package for tensor reduction of Feynman integrals
• Decay Constants of Beauty Mesons from QCD Sum Rules
• Heavy-strange meson decay constants in the continuum limit of quenched QCD

Cited by in corpus (36)

• 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
• Tau properties in $B\to D\tau \nu$ from visible final-state kinematics
• 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
• \large\bf $B_c\to (J/\Psi ,{\eta }_c)\tau \nu$ semileptonic decays within Standard model and beyond
• Semileptonic $D_{(s)}$-meson decays in the light of recent data
• Asymmetry Observables and the Origin of $R_{D^{(\ast )}}$ Anomalies
• Semileptonic Decays of Charmed Mesons to Light Scalar Mesons
• Theoretical description of the decays ${\Lambda }_b\to {\Lambda }^{(\ast )}({\frac{1}{2}}^{\pm },{\frac{3}{2}}^{\pm })+J/\psi$
• Revising inelastic dark matter direct detection by including the cosmic ray acceleration
• Model independent analysis of $b\to (c,u)\tau \nu$ leptonic and semileptonic decays
• On the Minimal Flavor Violating Leptoquark Explanation of the $R_{D^{(\ast )}}$ Anomaly
• Maximizing the Impact of New Physics in $b\to c\tau \nu$ Anomalies
• A comprehensive study on the semileptonic decay of heavy flavor mesons
• Study of $B_c$ decays into charmonia and $D$ mesons
• Signature of Lepton flavor universality violation in $B_s\to D_s\tau \nu$ semileptonic decays
• Decay $D\to K^{(\ast )}{\ell }^{+}{\nu }_{\ell }$ in covariant quark model
• Semileptonic decays $B/B_s\to (D^{(\ast )},D_s^{(\ast )})l{\nu }_l$ in the PQCD approach with the lattice QCD input
• Relativistic description of the semileptonic decays of bottom mesons
• A Complete Framework for Tau Polarimetry in $B\to D^{(\ast )}\tau \nu$ Decays
• Lepton Flavor Universality tests through angular observables of $\overline{B}\to D^{(\ast )}\ell \overline{\nu }$ decay modes
• Form factors and branching fraction calculations for $B_s\to D_s^{(\ast )}{\ell }^{+}{\nu }_{\ell }$ in view of LHCb observation
• Semileptonic decays of $B^{(\ast )}$, $D^{(\ast )}$ into $\nu l$ and pseudoscalar or vector mesons
• Measurement of the $D^{\ast }$ longitudinal polarization in $B^0\to D^{\ast -}{\tau }^{+}{\nu }_{\tau }$ decays
• $D^{\ast }$ Polarization as an Additional Constraint on New Physics in the $b\to c\tau {\bar{\nu }}_{\tau }$ Transition
• Form-factor-independent test of lepton universality in semileptonic heavy meson and baryon decays
• Predictions of $B_c\to (D,D^{\ast })l\nu$ decay observables in the standard model
• Weak transition form factors of heavy-light pseudoscalar mesons for space- and timelike momentum transfers
• Prediction of various observables for $B_s^0\to D_s^{(\ast )-}{\ell }^{+}{\nu }_{\ell }$ within covariant confined quark model
• $B\to K^{(\ast )}\nu \bar{\nu }$ in covariant confined quark model
• Angular distribution as an effective probe of new physics in semi-hadronic three-body meson decays
• Helicity amplitudes in $B\to D^{\ast }\bar{\nu }l$ decay
• $B_c^{\ast }$ meson parameters and radiative decay width within the covariant confined quark model
• Decay $B_c^{+}\to D_{(s)}^{(\ast )+}{\ell }^{+}{\ell }^{-}$ within covariant confined quark model
• Probing $D_s^{\ast }$-meson longitudinal twist-2 LCDA
• Helicity amplitudes in the $\bar{B}\to D^{\ast }{\bar{\nu }}_{\tau }\tau$ decay with $V-A$ breaking in the quark sector