# 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:

- 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}

}