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Title: Annihilation contributions and CP asymmetries in B{sup +}{yields}{pi}{sup +}K{sup 0}, K{sup +}K{sup 0} and B{sup 0}{yields}K{sup 0}K{sup 0}

Abstract

Recently the branching ratios for B{sup +}{yields}K{sup +}K{sup 0} and B{sup 0}{yields}K{sup 0}K{sup 0} have been measured. Data indicate that the annihilation amplitudes in these decays are not zero. A nonzero annihilation amplitude plays an important role in CP violation for B{sup +}{yields}{pi}{sup +}K{sup 0}, K{sup +}K{sup 0}. Using the measured branching ratios for these decays, we show that there is an absolute bound of 5% for the size of CP asymmetry in B{sup +}{yields}{pi}{sup +}K{sup 0} from a relation between the amplitudes of these decays. The size of CP asymmetry in B{sup +}{yields}K{sup +}K{sup 0} can, however, be as large as 90%. Future experimental data will test these predictions.

Authors:
;  [1];  [1];  [2]
  1. Department of Physics, Nankai University, Tianjin (China)
  2. (China)
Publication Date:
OSTI Identifier:
21011024
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.75.037501; (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; ANNIHILATION; ASYMMETRY; B PLUS MESONS; BRANCHING RATIO; CP INVARIANCE; DECAY AMPLITUDES; KAONS NEUTRAL; KAONS PLUS; PIONS PLUS

Citation Formats

Hao Xiqing, Li Xueqian, He Xiaogang, and Department of Physics and Center for Theoretical Sciences, National Taiwan University, Taipei. Annihilation contributions and CP asymmetries in B{sup +}{yields}{pi}{sup +}K{sup 0}, K{sup +}K{sup 0} and B{sup 0}{yields}K{sup 0}K{sup 0}. United States: N. p., 2007. Web. doi:10.1103/PHYSREVD.75.037501.
Hao Xiqing, Li Xueqian, He Xiaogang, & Department of Physics and Center for Theoretical Sciences, National Taiwan University, Taipei. Annihilation contributions and CP asymmetries in B{sup +}{yields}{pi}{sup +}K{sup 0}, K{sup +}K{sup 0} and B{sup 0}{yields}K{sup 0}K{sup 0}. United States. doi:10.1103/PHYSREVD.75.037501.
Hao Xiqing, Li Xueqian, He Xiaogang, and Department of Physics and Center for Theoretical Sciences, National Taiwan University, Taipei. Thu . "Annihilation contributions and CP asymmetries in B{sup +}{yields}{pi}{sup +}K{sup 0}, K{sup +}K{sup 0} and B{sup 0}{yields}K{sup 0}K{sup 0}". United States. doi:10.1103/PHYSREVD.75.037501.
@article{osti_21011024,
title = {Annihilation contributions and CP asymmetries in B{sup +}{yields}{pi}{sup +}K{sup 0}, K{sup +}K{sup 0} and B{sup 0}{yields}K{sup 0}K{sup 0}},
author = {Hao Xiqing and Li Xueqian and He Xiaogang and Department of Physics and Center for Theoretical Sciences, National Taiwan University, Taipei},
abstractNote = {Recently the branching ratios for B{sup +}{yields}K{sup +}K{sup 0} and B{sup 0}{yields}K{sup 0}K{sup 0} have been measured. Data indicate that the annihilation amplitudes in these decays are not zero. A nonzero annihilation amplitude plays an important role in CP violation for B{sup +}{yields}{pi}{sup +}K{sup 0}, K{sup +}K{sup 0}. Using the measured branching ratios for these decays, we show that there is an absolute bound of 5% for the size of CP asymmetry in B{sup +}{yields}{pi}{sup +}K{sup 0} from a relation between the amplitudes of these decays. The size of CP asymmetry in B{sup +}{yields}K{sup +}K{sup 0} can, however, be as large as 90%. Future experimental data will test these predictions.},
doi = {10.1103/PHYSREVD.75.037501},
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}
}