Heavy+light pseudoscalar meson semileptonic transitions

Abstract

A symmetry-preserving regularisation of a vector$\times$vector contact interaction (SCI) is used to deliver a unified treatment of semileptonic transitions involving $\pi$, $K$, $D_{(s)}$, $B_{(s,c)}$ initial states. The framework is characterised by algebraic simplicity, few parameters, and the ability to simultaneously treat systems from Nambu-Goldstone modes to heavy+heavy mesons. Although the SCI form factors are typically somewhat stiff, the results are comparable with experiment and rigorous theory results. Hence, predictions for the five unmeasured $B_{s,c}$ branching fractions should be a reasonable guide. The analysis provides insights into the effects of Higgs boson couplings via current-quark masses on the transition form factors; and results on $B_{(s)}\to D_{(s)}$ transitions yield a prediction for the Isgur-Wise function in fair agreement with contemporary data.

arXiv comment17 pages, 13 figures, 3 tables

References in corpus (82)

• New Results on B->pi, K, eta Decay Formfactors from Light-Cone Sum Rules
• FLAG Review 2019
• Baryons as relativistic three-quark bound states
• Electron-Ion Collider in China
• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of 2018
• Goldstone Theorem and Diquark Confinement Beyond Rainbow-Ladder Approximation
• QCD at finite temperature and chemical potential from Dyson-Schwinger equations
• The $B\to D\ell \nu$ form factors at nonzero recoil and $|V_{cb}|$ from $2+1$-flavor lattice QCD
• Dynamical Chiral Symmetry Breaking, Goldstone's Theorem and the Consistency of the Schwinger--Dyson and Bethe--Salpeter Equations
• Form Factors from Light-Cone Sum Rules with B-Meson Distribution Amplitudes
• Extended NJL Model for light and heavy mesons without q-qbar thresholds
• The Infrared Behaviour of the Pure Yang-Mills Green Functions
• Pion and Kaon Structure at the Electron-Ion Collider
• Insights into the Emergence of Mass from Studies of Pion and Kaon Structure
• $|V_{ub}|$ from $B\to \pi \ell \nu$ decays and (2+1)-flavor lattice QCD
• Heavy meson masses and decay constants from relativistic heavy quarks in full lattice QCD
• The pion: an enigma within the Standard Model
• Abelian anomaly and neutral pion production
• pi- and rho-mesons, and their diquark partners, from a contact interaction
• $B\to \pi \ell \nu$ and $B_s\to K\ell \nu$ form factors and $|V_{ub}|$ from 2+1-flavor lattice QCD with domain-wall light quarks and relativistic heavy quarks
• B-meson decay constants: a more complete picture from full lattice QCD
• Study of Exclusive B->X_u l nu Decays and Extraction of |V_{ub}| using Full Reconstruction Tagging at the Belle Experiment
• Precise predictions of charmed-bottom hadrons from lattice QCD
• Improved measurements of D meson semileptonic decays to pi and K mesons
• Measurement of the decay $B\to D\ell {\nu }_{\ell }$ in fully reconstructed events and determination of the Cabibbo-Kobayashi-Maskawa matrix element $|V_{cb}|$
• Precise Measurement of the Pi+ -> Pi0 e+ nu Branching Ratio
• Nucleon and $\Delta$ elastic and transition form factors
• Non-perturbatively Improved Heavy-Light Mesons: Masses and Decay Constants
• $B_{(s)},D_{(s)}\to \pi ,K,\eta ,\rho ,K^{\ast },\omega ,\varphi$ Transition Form Factors and Decay Rates with Extraction of the CKM parameters $|V_{ub}|$, $|V_{cs}|$, $|V_{cd}|$
• Measurement of the decay $B^0\to {\pi }^{-}{\ell }^{+}\nu$ and determination of $|V_{ub}|$
• Branching fraction and form-factor shape measurements of exclusive charmless semileptonic B decays, and determination of |V_{ub}|
• Rare exclusive semileptonic b -> s transitions in the Standard Model
• $B_s\to K\ell \nu$ form factors from lattice QCD
• Revealing the structure of light pseudoscalar mesons at the Electron-Ion Collider
• Effective charge from lattice QCD
• Heavy-to-light form factors on the light cone
• Measurement of |V_cb| and the Form-Factor Slope in Bbar -> D l- nubar Decays in Events Tagged by a Fully Reconstructed B Meson
• Masses of ground-state mesons and baryons, including those with heavy quarks
• $B_s\to D_s\ell \nu$ Form Factors for the full $q^2$ range from Lattice QCD with non-perturbatively normalized currents
• Empirical Consequences of Emergent Mass
• Selected Science Opportunities for the EicC
• $K\to \pi$ semileptonic form factors with $N_f=2+1+1$ Twisted Mass fermions
• $D\to \pi ,l\nu$ Semileptonic Decays, $|V_{cd}|$ and 2${}^{nd}$ Row Unitarity from Lattice QCD
• Masses of Light and Heavy Mesons and Baryons: A Unified Picture
• Weak decays of the B_c meson to B_s and B mesons in the relativistic quark model
• Challenges in Semileptonic B Decays
• Measurement of the B0 --> pi l nu Form-Factor Shape and Branching Fraction, and Determination of |Vub| with a Loose Neutrino Reconstruction Technique
• Impressions of the Continuum Bound State Problem in QCD
• Mass-dependence of pseudoscalar meson elastic form factors
• B- to light-meson transition form factors
• Reflections upon the Emergence of Hadronic Mass
• Baryon and meson screening masses
• Masses of positive- and negative-parity hadron ground-states, including those with heavy quarks
• $B_s\to K\ell \nu$ decay from lattice QCD
• Charmed mesons with a symmetry-preserving contact interaction
• Masses and decay constants of D(s)* and B(s)* mesons with Nf = 2 + 1 + 1 twisted mass fermions
• Charmonia in a Contact Interaction
• Masses and decay constants of $D_{(s)}^{\ast }$ and $B_{(s)}^{\ast }$ mesons in Lattice QCD with $N_f=2+1+1$ twisted-mass fermions
• Determination of $|V_{us}|$ from a lattice-QCD calculation of the $K\to \pi \ell \nu$ semileptonic form factor with physical quark masses
• Features and flaws of a contact interaction treatment of the kaon
• Contact interaction analysis of pion GTMDs
• The BESIII Physics Programme
• Contact-interaction Faddeev equation and, inter alia, proton tensor charges
• Study on $B_s\to D_{sJ}(2317,2460)l\bar{\nu }$ Semileptonic Decays in the CQM Model
• First measurement of the form factors in $D_s^{+}\to K^0{e}^{+}{\nu }_e$ and $D_s^{+}\to K^{\ast 0}{e}^{+}{\nu }_e$ decays
• ${\eta }_c$ Elastic and Transition Form Factors: Contact Interaction and Algebraic Model
• Measurement of the $D^0\to {\pi }^{-}{e}^{+}{\nu }_e$ differential decay branching fraction as a function of $q^2$ and study of form factor parameterizations
• Heavy quarkonia in a contact interaction and an algebraic model: mass spectrum, decay constants, charge radii and elastic and transition form factors
• $B_s\to D_s\ell \nu$ Form Factors and the Fragmentation Fraction Ratio $f_s/f_d$
• Measures of pion and kaon structure from generalised parton distributions
• Kaon semileptonic vector form factor and determination of |V_{us}| using staggered fermions
• Semileptonic decays $B_c\to ({\eta }_c,J/\psi )l{\bar{\nu }}_l$ in the "PQCD + Lattice" approach
• $B_c\to B_{s(d)}$ form factors from lattice QCD
• An effective model for charmed meson semileptonic decays
• Improved $V_{cs}$ determination using precise lattice QCD form factors for $D\to K\ell \nu$
• K_{l3} transition form factors
• Semileptonic decays $B/B_s\to (D^{(\ast )},D_s^{(\ast )})l{\nu }_l$ in the PQCD approach with the lattice QCD input
• Semileptonic decays of $D_{(s)}$ mesons
• Self-consistent light-front quark model analysis of $B\to D\ell {\nu }_{\ell }$ transition form factors
• Distribution amplitudes of light diquarks
• Symmetry-preserving contact interaction model for heavy-light mesons
• New parametrization of the form factors in $\bar{B}\to D\ell {\bar{\nu }}_{\ell }$ decays

Cited by in corpus (6)

• Vector-meson production and vector meson dominance
• Dynamical diquarks in the ${\mathbf{\gamma }}^{(\ast )}\mathbf{p}\to \mathbf{N}(1535){\frac{1}{2}}^{-}$ transition
• Bethe-Salpeter kernel and properties of strange-quark mesons
• A symmetry preserving contact interaction treatment of the kaon
• Heavy + heavy and heavy + light pseudoscalar to vector semileptonic transitions
• Semileptonic transitions: $B_{(s)}\to \pi (K)$; $D_s\to K$; $D\to \pi ,K$; and $K\to \pi$