An effective model for charmed meson semileptonic decays

Abstract

We analyze charm meson semileptonic decays using the measured ratios ${\Gamma }_L/{\Gamma }_T$ and ${\Gamma }_{+}/{\Gamma }_{-}$ from $D\to {\bar{K}}^{\ast }$ and the branching ratios for $D\to {\bar{K}}^{\ast }$ and $D\to \bar{K}$. First we introduce the light vector mesons in a model which combines the heavy quark effective Lagrangian and the chiral perturbation approach. We propose a method which predicts the behavior of the form factors. Using the available experimental data we determine the values of some model parameters and reproduce the observed branching ratios for $D_s\to \Phi$, $D_s\to (\eta +{\eta }^{\prime })$ and $D\to \pi$. We make predictions for the yet unmeasured branching ratios and polarization observables.

17 pages, Latex file

Cited by in corpus (26)

• Lepton Flavor Violation in the Standard Model Extended by Heavy Singlet Dirac Neutrinos
• Rare charm meson decays D->Pl^+l^- and c->ul^+l^- in SM and MSSM
• Charm meson resonances and D to V semileptonic form factors
• Charm meson resonances in $D\to P\ell \nu$ decays
• Charming penguin contributions to B => K π
• Dilepton production in proton-proton and Pb+Pb collisions at sqrt(s_NN)=2.76 TeV
• The CP violating asymmetry in $B^{\pm }\to M\bar{M}{\pi }^{\pm }$ decays
• Long distance $c\to u\gamma$ effects in weak radiative decays of D-mesons
• The penguin operators in nonresonant $B^{-}\to M\bar{M}{\pi }^{-}$ $(M={\pi }^{-},K^{-},K^0)$ decays
• Resonant and nonresonant contributions to the weak $D\to V{l}^{+}{l}^{-}$ decays
• Measurement of the Branching Ratio B(D+ --> rho^0 l nu)/B(D+ --> K*0 l nu)
• Semileptonic decays of $D_{(s)}$ mesons
• Nonleptonic two-body charmed meson decays in an effective model for their semileptonic decays
• Heavy+light pseudoscalar meson semileptonic transitions
• Signatures of the two $K_1(1270)$ poles in $D^{+}\to \nu e^{+}VP$ decay
• Resonant and nonresonant D+ -> K- pi+ l+ nu(l) semileptonic decays
• Charm and Bottom Semileptonic Decays
• CP violating phase $\gamma$ and the partial widths asymmetry in $B^{-}\to {\pi }^{+}{\pi }^{-}{K}^{-}$ and $B^{-}\to K^{+}{K}^{-}{K}^{-}$ decays
• Helicity and partial wave amplitude analysis of D -> K^* ρdecay
• The rare decays of D mesons
• Radiative three-body D-meson decays in and beyond the standard model
• Cabibbo Allowed D -> K pi gamma Decays
• Charm Radiative Decays with Neutral Mesons D^0 -> K^0(bar) pi^0 gamma, D^0 -> K^0(bar) eta (eta') gamma
• Amplitude analysis of hadron decays
• Role of Resonances in Heavy Meson Processes within Standard Model and Beyond
• Signal for CP violation in $B^{\pm }\to P\bar{P}{\pi }^{\pm }$ decays