Radiative Leptonic Decays of Heavy Mesons

Abstract

We compute the photon spectrum and the rate for the decays $B(D)\to l{\nu }_l\gamma$ These photonic modes constitute a potentially large background for the purely leptonic decays which are used to extract the heavy meson decay constants. While the rate for $D\to l\n\g$ is small, the radiative decay in the $B$ meson case could be of comparable magnitude or even larger than $B\to\m\n$. This would affect the determination of $f_B$ if the $\tau$ channel cannot be identified. We obtain theoretical estimates for the photonic rates and disscuss their possible experimental implications.

12 pages, RevTex, 3 uuencoded figures included

References in corpus (7)

• Heavy Quark Symmetry
• Strong Decays of Excited Heavy Mesons In Chiral Perturbation Theory
• Chiral Dynamics and Heavy Quark Symmetry in a Toy Field Theoretic Model
• Radiative $D^{\ast }$ Decay Using Heavy Quark and Chiral Symmetry
• $b\to s\gamma$ and $B_s\to {\mu }^{+}{\mu }^{-}$ in Extended Technicolor Models
• Excited Heavy Mesons and Kaon Loops in Chiral Perturbation Theory
• Constraints on Extended Technicolor Models from B -> mu+ mu- X

Cited by in corpus (62)

• The Physics of the B Factories
• Flavor-phenomenology of two-Higgs-doublet models with generic Yukawa structure
• $B$- and $D$-meson leptonic decay constants from four-flavor lattice QCD
• Review of Lepton Universality tests in B decays
• Charged-Higgs phenomenology in the Aligned two-Higgs-doublet model
• Predictions of selected flavour observables within the Standard Model
• Radiative leptonic decays of B mesons in QCD
• Charmed and light pseudoscalar meson decay constants from four-flavor lattice QCD with physical light quarks
• Improved Measurement of cal{B}(D^+ --> mu^+ nu) and the Pseudoscalar Decay Constant f_{D^+}
• Precision Measurement of B(D+ -> mu+ nu) and the Pseudoscalar Decay Constant fD+
• Factorization in leptonic radiative B -> gamma eνdecays
• Accumulating evidence for nonstandard leptonic decays of D_s mesons
• Calculation of Long-Distance Effects in Exclusive Weak Radiative Decays of B-Mesons
• Factorization, the light-cone distribution amplitude of the B-meson and the radiative decay B -> gamma l nu_l
• Measurement of B(Ds+ -->ell+ nu) and the Decay Constant fDs From 600/pb of e+e- Annihilation Data Near 4170 MeV
• B Mesons
• Radiative Decay $B\to l\nu \gamma$ in the Light Cone QCD Approach
• Precision measurements of $B(D^{+}\to {\mu }^{+}{\nu }_{\mu })$, the pseudoscalar decay constant $f_{D^{+}}$, and the quark mixing matrix element $|V_{\mathrm{cd}}|$
• Uncertainties from Long Range Effects in $B \to K^* γ
• Study of $B_{s,d}\to l^{+}{l}^{-}\gamma$ Decays
• Radiative Leptonic B Decays in the Light Front Model
• Improved Measurement of the Pseudoscalar Decay Constant $f_{D_s}$
• Decay constants of P and D-wave heavy-light mesons
• The CKM Parameters
• Charge Asymmetry and Photon Energy Spectrum in the Decay $B_s\to l^{+}{l}^{-}\gamma$
• Determination of the pseudoscalar decay constant $f_{D_s^{+}}$ via $D_s^{+}\to {\mu }^{+}{\nu }_{\mu }$
• Study of the leptonic decays of pseudoscalar $B,D$ and vector $B^{\ast },D^{\ast }$ mesons and of the semileptonic $B\to D$ and $B\to D^{\ast }$ decays
• Measurement of the $D_s^{+}\to {\ell }^{+}{\nu }_{\ell }$ branching fractions and the decay constant $f_{D_s^{+}}$
• The MiniBooNE anomaly, the decay Ds -> mu+nu and heavy sterile neutrino
• Faking $B_s\to {\mu }^{+}{\mu }^{-}$
• Soft Photon Problem in Leptonic B-decays
• Study of $B_s\to {\ell }^{+}{\ell }^{-}\gamma$ decays in covariant quark model
• Rare (B -> l^+ l^- gamma) decay and new physics effects
• Leptonic decays of the Ds meson
• Large enhancement of D -> e nu and Ds -> e nu in R Parity violating SUSY models
• B meson wave function from the $B\to \gamma l\nu$ decay
• On the Decay Mode $B^{-}\to {\mu }^{-}{\bar{\nu }}_{\mu }\gamma$
• Model-independent search for the decay B -> l nu gamma
• Searching for super-WIMPs in leptonic heavy meson decays
• Leptonic Constant from B Meson Radiative Decay
• Measurement of the absolute branching fractions for purely leptonic $D_s^{+}$ decays
• Constraining New Physics with D meson decays
• Transverse Momentum Dependent Factorization for Radiative Leptonic Decay of B-Meson
• Methods for high-precision determinations of radiative-leptonic decay form factors using lattice QCD
• Search for the Radiative Leptonic Decay $D^{+}\to \gamma e^{+}{\nu }_e$
• Radiative Leptonic B_c Decays in Effective Field Theory
• Search for the decay $D_s^{+}\to \gamma e^{+}{\nu }_e$
• New charged Higgs effects on ${\Gamma }_{K_{e2}}/{\Gamma }_{K_{\mu 2}}$, $f_{D_s}$ and $\mathcal{B}(B^{+}\to {\tau }^{+}\nu )$ in the Two-Higgs-Doublet model
• Radiative Leptonic $B_c$ Decays
• A General analysis of the lepton polarizations in Bs ->γ\ell^+ \ell^- decays
• On the Impact of Soft Photons on $B\to K{\ell }^{+}{\ell }^{-}$
• Radiative leptonic decays of heavy mesons in heavy quark limit
• Radiative leptonic B decays in the instantaneous Bethe-Salpeter approach
• Search for the decay $D_s^{+}\to \omega e^{+}\nu$
• Form factors and branching ratio for the B -> l nu gamma decay
• Leptonic decays of D_s and B^+ mesons in supersymmetric standard model with R-parity violating interactions
• Static and dynamic properties of hadronic systems with heavy quarks b and c
• A possible signature of new physics at BES-III
• $\tau$ polarization asymmetries in $B^{+}\to {\tau }^{+}{\nu }_{\tau }\gamma$ and $B_c^{+}\to {\tau }^{+}{\nu }_{\tau }\gamma$
• Efficient lattice QCD computation of radiative-leptonic-decay form factors at multiple positive and negative photon virtualities
• Precision Measurement of the Branching Fraction of $D^{+}\to {\mu }^{+}{\nu }_{\mu }$
• Can contribution from magnetic-penguin operator with real photon to $B_s\to {\ell }^{+}{\ell }^{-}\gamma$ in the standard model be neglected?