Factorization in B{yields}V{gamma} decays

Becher, T; Hill, R J; Neubert, M

doi:10.1103/PhysRevD.72.094017

Title: Factorization in B{yields}V{gamma} decays

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Abstract

The factorization properties of the radiative decays B{yields}V{gamma} are analyzed at leading order in 1/m{sub b} using the soft-collinear effective theory. It is shown that the decay amplitudes can be expressed in terms of a B{yields}V form factor evaluated at q{sup 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{yields}K*{gamma} branching ratio, isospin asymmetry, and CP asymmetries are discussed, with particular emphasis on possible effects from physics beyond the standard model.

Authors:

Becher, T ^[1]; Hill, R J ^[2]; Neubert, M ^[3]

Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, Illinois 60510 (United States)
Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309 (United States)
Institute for High-Energy Phenomenology, Newman Laboratory for Elementary-Particle Physics, Cornell University, Ithaca, New York 14853 (United States)

Publication Date:: Tue Nov 01 00:00:00 EST 2005

OSTI Identifier:: 20713831

Resource Type:: Journal Article

Journal Name:: Physical Review. D, Particles Fields

Additional Journal Information:: Journal Volume: 72; Journal Issue: 9; Other Information: DOI: 10.1103/PhysRevD.72.094017; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2821

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ASYMMETRY; B MESONS; B QUARKS; BRANCHING RATIO; CP INVARIANCE; DECAY AMPLITUDES; DISTRIBUTION; FACTORIZATION; FORM FACTORS; HADRONIC PARTICLE DECAY; HARD COLLISION MODELS; ISOSPIN; K*-892 MESONS; LIGHT CONE; PERTURBATION THEORY; PHOTONS; RADIATIVE DECAY; RENORMALIZATION; SCATTERING; STANDARD MODEL

Citation Formats


                    Becher, T, Hill, R J, and Neubert, M. Factorization in B{yields}V{gamma} decays.  United States: N. p., 2005. 
        Web.  doi:10.1103/PhysRevD.72.094017.

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                    Becher, T, Hill, R J, & Neubert, M. Factorization in B{yields}V{gamma} decays.  United States.  https://doi.org/10.1103/PhysRevD.72.094017

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                    Becher, T, Hill, R J, and Neubert, M. 2005.  
        "Factorization in B{yields}V{gamma} decays".  United States.  https://doi.org/10.1103/PhysRevD.72.094017.

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@article{osti_20713831,

  title        = {Factorization in B{yields}V{gamma} decays},

  author       = {Becher, T and Hill, R J and Neubert, M},

  abstractNote = {The factorization properties of the radiative decays B{yields}V{gamma} are analyzed at leading order in 1/m{sub b} using the soft-collinear effective theory. It is shown that the decay amplitudes can be expressed in terms of a B{yields}V form factor evaluated at q{sup 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{yields}K*{gamma} branching ratio, isospin asymmetry, and CP asymmetries are discussed, with particular emphasis on possible effects from physics beyond the standard model.},

  doi          = {10.1103/PhysRevD.72.094017},

  url          = {https://www.osti.gov/biblio/20713831},
  journal      = {Physical Review. D, Particles Fields},

  issn         = {0556-2821},

  number       = 9,

  volume       = 72,

  place        = {United States},

  year         = {Tue Nov 01 00:00:00 EST 2005},

  month        = {Tue Nov 01 00:00:00 EST 2005}

}

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