Light-front holography in $B$ physics

Abstract

We use AdS/QCD holographic Distributions Amplitudes for the vector mesons $\rho$ and $K^{\ast }$ in order to predict the radiative decays $B\to \rho \gamma$ and $B\to K^{\ast }\gamma$ as well as the semileptonic decays $B\to \rho l\nu$ and $B\to K^{\ast }{\mu }^{+}{\mu }^{-}$. For the radiative decays, we find that the AdS/QCD DAs offer the advantage of avoiding end-point singularities when computing power suppressed contributions. For the semileptonic decays $B\to \rho l\nu$ and $B\to K^{\ast }{\mu }^{+}{\mu }^{-}$, we compare our predictions to the latest BaBar and LHCb data respectively.

6 pages, 4 figures. Proceedings contribution to the Light-Cone 2014 workshop held at North-Carolina Sate University, Raleigh, USA (May 26 - 30)

References in corpus (6)

• Light-Front Holography: A First Approximation to QCD
• Study of B --> pi l nu and B --> rho l nu Decays and Determination of |V_ub|
• Twist-4 Distribution Amplitudes of the K${}^{\ast }$ and $\varphi$ Mesons in QCD
• Measurement of the isospin asymmetry in $B\to K^{(\ast )}{\mu }^{+}{\mu }^{-}$ decays
• Predicting $B->\rho \gamma$ and $B_s->\rho \gamma$ using holographic AdS/QCD Distribution Amplitudes for the $\rho$ meson
• Hadronic Form Factor Models and Spectroscopy Within the Gauge/Gravity Correspondence