Abstract
We present an estimate of the inclusive decay rate and photon energy- and hadron mass-spectrum for the CKM-suppressed radiative rare decays B → X d + γ, based on perturbative QCD and a phenomenological model for the B-meson wave function (here X d denotes nonstrange hadrons). Present constraints on | V td| are used to predict BR(B → X d + γ) = (0.8−4) × 10 −5 for the top quark mass in the range 100 ⩽ m t ⩽ 200 GeV. From the inclusive invariant hadron-mass spectrum and using vector meson dominance in the region m(X d) ⩽ 1 GeV, we estimate the branching ratio for the exclusive rare decay mode B → ϱ + γ and the ratio Γ( B → ϱ + γ)/Γ( B → K ∗ + γ) . The importance of measuring these decays in determining the CKM matrix element | V td| is emphasized.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
