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Title: Branching ratio and CP asymmetry for B{yields}1{sup 1}P{sub 1}{gamma} decays

Abstract

We calculate the branching ratios for B{yields}(b{sub 1},h{sub 1}){gamma} at next-to-leading order (NLO) of {alpha}{sub s} where b{sub 1} and h{sub 1} are the corresponding orbitally excited axial vector mesons of {rho} and {omega} respectively. Using the SU(3) symmetry for the form factors, the branching ratio for B{yields}(b{sub 1},h{sub 1}){gamma} is expressed in terms of the branching ratio of the B{yields}K{sub 1}{gamma} and it is found to be B(B{yields}b{sub 1}{gamma})=0.53x10{sup -6} and B(B{yields}h{sub 1}{gamma})=0.51x10{sup -6}. We also calculate direct CP-asymmetry for these decays and find that its typical values lies around 11% and is negative like {rho} and {omega} in the standard model. The predicted value of CP-asymmetry, in confirmity with the observations made in the literature, is scale dependent which has also been discussed in detail.

Authors:
;  [1];  [2]
  1. National Centre for Physics and Department of Physics, Quaid-i-Azam University, Islamabad (Pakistan)
  2. (Pakistan)
Publication Date:
OSTI Identifier:
21010980
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 75; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevD.75.034004; (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; CP INVARIANCE; FORM FACTORS; HADRONIC PARTICLE DECAY; OMEGA-782 MESONS; PHOTONS; RHO-770 MESONS; STANDARD MODEL; SU-3 GROUPS

Citation Formats

Aslam, M. Jamil, Riazuddin, and National Centre for Physics, Quaid-i-Azam University, Islamabad. Branching ratio and CP asymmetry for B{yields}1{sup 1}P{sub 1}{gamma} decays. United States: N. p., 2007. Web. doi:10.1103/PHYSREVD.75.034004.
Aslam, M. Jamil, Riazuddin, & National Centre for Physics, Quaid-i-Azam University, Islamabad. Branching ratio and CP asymmetry for B{yields}1{sup 1}P{sub 1}{gamma} decays. United States. doi:10.1103/PHYSREVD.75.034004.
Aslam, M. Jamil, Riazuddin, and National Centre for Physics, Quaid-i-Azam University, Islamabad. Thu . "Branching ratio and CP asymmetry for B{yields}1{sup 1}P{sub 1}{gamma} decays". United States. doi:10.1103/PHYSREVD.75.034004.
@article{osti_21010980,
title = {Branching ratio and CP asymmetry for B{yields}1{sup 1}P{sub 1}{gamma} decays},
author = {Aslam, M. Jamil and Riazuddin and National Centre for Physics, Quaid-i-Azam University, Islamabad},
abstractNote = {We calculate the branching ratios for B{yields}(b{sub 1},h{sub 1}){gamma} at next-to-leading order (NLO) of {alpha}{sub s} where b{sub 1} and h{sub 1} are the corresponding orbitally excited axial vector mesons of {rho} and {omega} respectively. Using the SU(3) symmetry for the form factors, the branching ratio for B{yields}(b{sub 1},h{sub 1}){gamma} is expressed in terms of the branching ratio of the B{yields}K{sub 1}{gamma} and it is found to be B(B{yields}b{sub 1}{gamma})=0.53x10{sup -6} and B(B{yields}h{sub 1}{gamma})=0.51x10{sup -6}. We also calculate direct CP-asymmetry for these decays and find that its typical values lies around 11% and is negative like {rho} and {omega} in the standard model. The predicted value of CP-asymmetry, in confirmity with the observations made in the literature, is scale dependent which has also been discussed in detail.},
doi = {10.1103/PHYSREVD.75.034004},
journal = {Physical Review. D, Particles Fields},
number = 3,
volume = 75,
place = {United States},
year = {Thu Feb 01 00:00:00 EST 2007},
month = {Thu Feb 01 00:00:00 EST 2007}
}