B{yields}V{gamma} beyond QCD factorization

Journal Article · Thu Mar 01 00:00:00 EST 2007 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.75.054004· OSTI ID:21020051

Ball, Patricia; Jones, Gareth W; Zwicky, Roman ^[1]

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1. IPPP, Department of Physics, University of Durham, Durham DH1 3LE (United Kingdom)

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.

• OSTI ID: 21020051
• Journal Information: Physical Review. D, Particles Fields, Vol. 75, Issue 5; Other Information: DOI: 10.1103/PhysRevD.75.054004; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

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