Ward Identities, B-> ρForm Factors and |V_ub|

Abstract

The exclusive FCNC beauty semileptonic decay B-> ρis studied using Ward identities in a general vector meson dominance framework, predicting vector meson couplings involved. The long distance contributions are discussed which results to obtain form factors and |V_ub|. A detailed comparison is given with other approaches.

30 pages+four postscript figures, an Appendix added

References in corpus (5)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Soft-collinear effective theory and heavy-to-light currents beyond leading power
• Heavy to light vector meson semileptonic decays
• Measurement of the CKM Matrix Element |Vub| with B->rho e nu Decays
• Helicity analysis of the decays B --> K^* ell^+ ell^- and B --> rho ell nu_ell in the large Energy Effective Theory

Cited by in corpus (6)

• B_l4 decays and the extraction of |V_ub|
• Scalar mesons in weak semileptonic decays of $B_{(s)}$
• Form factors, branching ratio and forward-backward asymmetry in B -> K_{1}ell ^{+} ell ^{-} decays
• Semileptonic charmed $B$ meson decays in Universal Extra Dimension Model
• Form factors and branching ratio for the B -> l nu gamma decay
• Exploring the exclusive decay $B^{+}\to \omega {\ell }^{+}\nu$ with light-cone sum rules