On the significance of B-decays to radially excited D

Abstract

We discuss the possibilities of testing the recent claims of a relatively large value of the B --> D' transition form factor through B0--> D' pi+ and B- --> D' pi- decay modes. To estimate the width of the latter we need the decay constant of the radially excited D-meson that we computed in lattice QCD with Nf=2 dynamical flavors and after taking the continuum limit we found f(D')=117(25) MeV. We also provide an update for the values of the D-meson decay constants obtained by using maximally twisted mass QCD.

16 pages including 5 tables and 3 figures [published version]

References in corpus (11)

• Update: Precision D_s decay constant from full lattice QCD using very fine lattices
• Light-cone sum rules for $B\to \pi$ form factors revisited
• Observation of new resonances decaying to $D\pi$ and $D^{\ast }\pi$ in inclusive $e^{+}{e}^{-}$ collisions near $\sqrt{s}=$10.58 GeV
• The $B(B_s)\to D_{(s)}P$, $D_{(s)}V$, $D_{(s)}^{\ast }P$ and $D_{(s)}^{\ast }V$ decays in the perturbative QCD approach
• Newly observed D(2550), D(2610), and D(2760) as 2S and 1D charmed mesons
• Memorino on the `1/2 vs. 3/2 Puzzle' in $\bar{B}\to l\bar{\nu }{X}_c$ -- a Year Later and a Bit Wiser
• Study of $\overline{B^0}\to D^0{\pi }^{+}{\pi }^{-}$ decays
• Excitations of single-beauty hadrons
• Update analysis of two-body charmed $B$ meson decays
• HQET at order 1/m: III. Decay constants in the quenched approximation
• Perturbative corrections to curvature sum rules

Cited by in corpus (16)

• Lattice QCD and QCD Sum Rule determination of the decay constants of eta_c, J/psi and hc states
• Sterile neutrinos in leptonic and semileptonic decays
• Measurements of branching fractions of leptonic and hadronic Ds+ meson decays and extraction of the Ds+ meson decay constant
• 'Bs --> Ds l nu' near zero recoil in and beyond the Standard 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
• Determination of the pseudoscalar decay constant $f_{D_s^{+}}$ via $D_s^{+}\to {\mu }^{+}{\nu }_{\mu }$
• How to understand the underlying structures of $X(4140)$, $X(4274)$, $X(4500)$ and $X(4700)$
• Radial excitations of heavy-light mesons from QCD sum rules
• Strategies for an accurate determination of the X(3872) energy from QCD lattice simulations
• Measurement of the branching fraction of leptonic decay $D_s^{+}\to {\tau }^{+}{\nu }_{\tau }$ via ${\tau }^{+}\to {\pi }^{+}{\pi }^0{\bar{\nu }}_{\tau }$
• B decays into radially excited charmed mesons
• Investigation of the semileptonic transition of the $B$ into the orbitally excited charmed tensor meson
• Improved measurement of the branching fraction of $D_s^{+}\to {\mu }^{+}{\nu }_{\mu }$
• Measurement of the branching fraction of $D_s^{+}\to {\tau }^{+}{\nu }_{\tau }$ via ${\tau }^{+}\to {\mu }^{+}{\nu }_{\mu }\overline{{\nu }_{\tau }}$
• Unexpected pattern of transitions to radial excitations by heavy quark current
• $B$ decays to radially excited $D$ mesons in Heavy Quark Effective Theory