Factorization in B->V gamma Decays

Abstract

The factorization properties of the radiative decays B->V gamma are analyzed at leading order in 1/m_b using the soft-collinear effective theory. It is shown that the decay amplitudes can be expressed in terms of a B->V form factor evaluated at q^2=0, light-cone distribution amplitudes of the B and V mesons, and calculable hard-scattering kernels. The renormalization-group equations in the effective theory are solved to resum perturbative logarithms of the different scales in the decay process. Phenomenological implications for the B->K* gamma branching ratio, isospin asymmetry, and CP asymmetries are discussed, with particular emphasis on possible effects from physics beyond the Standard Model.

52 pages, 7 figures; references added and brief discussion of power corrections included; version to appear in Phys. Rev. D

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Cited by in corpus (43)

• The Zero-Bin and Mode Factorization in Quantum Field Theory
• Flavor Physics in the Quark Sector
• B->V gamma Beyond QCD Factorisation
• Two body B decays with isosinglet final states in SCET
• $B\to K{l}^{+}{l}^{-}$ decay form factors from three-flavor lattice QCD
• Factorization at Subleading Power and Irreducible Uncertainties in $\bar{B}\to X_s\gamma$ Decay
• B, D and K decays
• Phenomenology of semileptonic B-meson decays with form factors from lattice QCD
• |V_td/V_ts| from B-> V gamma
• Radiative and Electroweak Penguin Decays of B Mesons
• Time-dependent CP Asymmetry in B->K* gamma as a (Quasi) Null Test of the Standard Model
• Towards $B\to V\gamma$ Decays at NNLO in SCET
• $B$-meson light-cone distribution amplitude from the Euclidean quantity
• B- to light-meson transition form factors
• $B\to K^{\ast }{\ell }^{+}{\ell }^{-}$ in soft-collinear effective theory
• Enhanced electroweak penguin amplitude in B-->VV decays
• Operator Relations for SU(3) Breaking Contributions to K and K* Distribution Amplitudes
• Exclusive radiative B-meson decays within the aligned two-Higgs-doublet model
• An estimate of the B-->K*gamma form factor
• Heavy-to-light meson form factors at large recoil
• Deep inelastic scattering near the endpoint in soft-collinear effective theory
• Precision calculations of the double radiative bottom-meson decays in soft-collinear effective theory
• Improved Determination of the CKM Angle alpha from B to pi pi decays
• Factorization in B -> K pi e+e- decays
• Role of electromagnetic dipole operator in the electroweak penguin dominated vector meson decays of $B$ meson
• $B$-meson Ioffe-time distribution amplitude at short distances
• Exclusive radiative B-meson decays within minimal flavour violating 2HDMs
• Anomalous $tq\gamma$ coupling effects in exclusive radiative B-meson decays
• Inverse moment of the $B$-meson quasi distribution amplitude
• Heavy quark expansion for heavy-light light-cone operators
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