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Title: B{yields}V{gamma} beyond QCD factorization

Abstract

We calculate the main observables in B{sub u,d}{yields}({rho},{omega},K*){gamma} and B{sub s}{yields}(K*,{phi}){gamma} decays, i.e. branching ratios and CP and isospin asymmetries. We include QCD factorization results and also the dominant contributions beyond QCD factorization, namely, long-distance photon emission and soft-gluon emission from quark loops. All contributions beyond QCD factorization are estimated from light-cone sum rules. We devise, in particular, a method for calculating soft-gluon emission, building on earlier ideas developed for analogous contributions in nonleptonic decays. Our results are relevant for new-physics searches at the B factories, CERN LHC and a future superflavor factory. Using current experimental data, we also extract |V{sub td}/V{sub ts}| and the angle {gamma} of the unitarity triangle. We give detailed tables of theoretical uncertainties of the relevant quantities which facilitates future determinations of these Cabibbo-Kobayashi-Maskawa parameters from updated experimental results.

Authors:
; ;  [1]
  1. IPPP, Department of Physics, University of Durham, Durham DH1 3LE (United Kingdom)
Publication Date:
OSTI Identifier:
21020051
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 75; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevD.75.054004; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ASYMMETRY; B MESONS; BRANCHING RATIO; CERN LHC; CP INVARIANCE; FACTORIZATION; GAMMA DECAY; GLUONS; ISOSPIN; K*-892 MESONS; KOBAYASHI-MASKAWA MATRIX; LIGHT CONE; OMEGA-782 MESONS; PHOTON EMISSION; QUANTUM CHROMODYNAMICS; QUARKS; RHO-770 MESONS; SUM RULES; UNITARITY; WEAK HADRONIC DECAY

Citation Formats

Ball, Patricia, Jones, Gareth W., and Zwicky, Roman. B{yields}V{gamma} beyond QCD factorization. United States: N. p., 2007. Web. doi:10.1103/PHYSREVD.75.054004.
Ball, Patricia, Jones, Gareth W., & Zwicky, Roman. B{yields}V{gamma} beyond QCD factorization. United States. doi:10.1103/PHYSREVD.75.054004.
Ball, Patricia, Jones, Gareth W., and Zwicky, Roman. Thu . "B{yields}V{gamma} beyond QCD factorization". United States. doi:10.1103/PHYSREVD.75.054004.
@article{osti_21020051,
title = {B{yields}V{gamma} beyond QCD factorization},
author = {Ball, Patricia and Jones, Gareth W. and Zwicky, Roman},
abstractNote = {We calculate the main observables in B{sub u,d}{yields}({rho},{omega},K*){gamma} and B{sub s}{yields}(K*,{phi}){gamma} decays, i.e. branching ratios and CP and isospin asymmetries. We include QCD factorization results and also the dominant contributions beyond QCD factorization, namely, long-distance photon emission and soft-gluon emission from quark loops. All contributions beyond QCD factorization are estimated from light-cone sum rules. We devise, in particular, a method for calculating soft-gluon emission, building on earlier ideas developed for analogous contributions in nonleptonic decays. Our results are relevant for new-physics searches at the B factories, CERN LHC and a future superflavor factory. Using current experimental data, we also extract |V{sub td}/V{sub ts}| and the angle {gamma} of the unitarity triangle. We give detailed tables of theoretical uncertainties of the relevant quantities which facilitates future determinations of these Cabibbo-Kobayashi-Maskawa parameters from updated experimental results.},
doi = {10.1103/PHYSREVD.75.054004},
journal = {Physical Review. D, Particles Fields},
number = 5,
volume = 75,
place = {United States},
year = {Thu Mar 01 00:00:00 EST 2007},
month = {Thu Mar 01 00:00:00 EST 2007}
}