skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Evidence for B{sup +}{yields}K{sup 0}K{sup +} and B{sup 0}{yields}K{sup 0}K{sup 0}, and Measurement of the Branching Fraction and Search for Direct CP Violation in B{sup +}{yields}K{sup 0}{pi}{sup +}

Abstract

We present evidence for the b{yields}d penguin-dominated decays B{sup +}{yields}K{sup 0}K{sup +} and B{sup 0}{yields}K{sup 0}K{sup 0} in 227x10{sup 6} {upsilon}(4S){yields}BB decays collected with the BABAR detector. We measure the branching fractions B(B{sup +}{yields}K{sup 0}K{sup +})=(1.5{+-}0.5{+-}0.1)x10{sup -6}(<2.4x10{sup -6}) and B(B{sup 0}{yields}K{sup 0}K{sup 0})=(1.19{sub -0.35}{sup +0.40}{+-}0.13)x10{sup -6}, where the uncertainties are statistical and systematic, respectively. We also present improved measurements of the charge-averaged branching fraction B(B{sup +}{yields}K{sup 0}{pi}{sup +})=(26.0{+-}1.3{+-}1.0)x10{sup -6} and CP-violating charge asymmetry A{sub CP}(K{sup 0}{pi}{sup +})=-0.09{+-}0.05{+-}0.01, where the uncertainties are statistical and systematic, respectively.

Authors:
; ; ; ; ; ; ; ;  [1];  [2]; ; ;  [3]; ; ; ; ;  [4]; ;  [5]
  1. Laboratoire de Physique des Particules, F-74941 Annecy-le-Vieux (France)
  2. IFAE, Universitat Autonoma de Barcelona, E-08193 Bellaterra, Barcelona (Spain)
  3. Universita di Bari, Dipartimento di Fisica and INFN, I-70126 Bari (Italy)
  4. Institute of High Energy Physics, Beijing 100039 (China)
  5. Institute of Physics, University of Bergen, N-5007 Bergen (Norway); and others
Publication Date:
OSTI Identifier:
20699601
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 95; Journal Issue: 22; Other Information: DOI: 10.1103/PhysRevLett.95.221801; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA). BABAR Collaboration; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ASYMMETRY; B NEUTRAL MESONS; B PLUS MESONS; BRANCHING RATIO; CP INVARIANCE; HADRONIC PARTICLE DECAY; KAONS NEUTRAL; KAONS PLUS; PIONS PLUS

Citation Formats

Aubert, B, Barate, R, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, J P, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Pappagallo, M, Pompili, A, Chen, J C, Qi, N D, Rong, G, Wang, P, Zhu, Y S, Eigen, G, and Ofte, I. Evidence for B{sup +}{yields}K{sup 0}K{sup +} and B{sup 0}{yields}K{sup 0}K{sup 0}, and Measurement of the Branching Fraction and Search for Direct CP Violation in B{sup +}{yields}K{sup 0}{pi}{sup +}. United States: N. p., 2005. Web. doi:10.1103/PhysRevLett.95.221801.
Aubert, B, Barate, R, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, J P, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Pappagallo, M, Pompili, A, Chen, J C, Qi, N D, Rong, G, Wang, P, Zhu, Y S, Eigen, G, & Ofte, I. Evidence for B{sup +}{yields}K{sup 0}K{sup +} and B{sup 0}{yields}K{sup 0}K{sup 0}, and Measurement of the Branching Fraction and Search for Direct CP Violation in B{sup +}{yields}K{sup 0}{pi}{sup +}. United States. https://doi.org/10.1103/PhysRevLett.95.221801
Aubert, B, Barate, R, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, J P, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Pappagallo, M, Pompili, A, Chen, J C, Qi, N D, Rong, G, Wang, P, Zhu, Y S, Eigen, G, and Ofte, I. 2005. "Evidence for B{sup +}{yields}K{sup 0}K{sup +} and B{sup 0}{yields}K{sup 0}K{sup 0}, and Measurement of the Branching Fraction and Search for Direct CP Violation in B{sup +}{yields}K{sup 0}{pi}{sup +}". United States. https://doi.org/10.1103/PhysRevLett.95.221801.
@article{osti_20699601,
title = {Evidence for B{sup +}{yields}K{sup 0}K{sup +} and B{sup 0}{yields}K{sup 0}K{sup 0}, and Measurement of the Branching Fraction and Search for Direct CP Violation in B{sup +}{yields}K{sup 0}{pi}{sup +}},
author = {Aubert, B and Barate, R and Boutigny, D and Couderc, F and Karyotakis, Y and Lees, J P and Poireau, V and Tisserand, V and Zghiche, A and Grauges, E and Palano, A and Pappagallo, M and Pompili, A and Chen, J C and Qi, N D and Rong, G and Wang, P and Zhu, Y S and Eigen, G and Ofte, I},
abstractNote = {We present evidence for the b{yields}d penguin-dominated decays B{sup +}{yields}K{sup 0}K{sup +} and B{sup 0}{yields}K{sup 0}K{sup 0} in 227x10{sup 6} {upsilon}(4S){yields}BB decays collected with the BABAR detector. We measure the branching fractions B(B{sup +}{yields}K{sup 0}K{sup +})=(1.5{+-}0.5{+-}0.1)x10{sup -6}(<2.4x10{sup -6}) and B(B{sup 0}{yields}K{sup 0}K{sup 0})=(1.19{sub -0.35}{sup +0.40}{+-}0.13)x10{sup -6}, where the uncertainties are statistical and systematic, respectively. We also present improved measurements of the charge-averaged branching fraction B(B{sup +}{yields}K{sup 0}{pi}{sup +})=(26.0{+-}1.3{+-}1.0)x10{sup -6} and CP-violating charge asymmetry A{sub CP}(K{sup 0}{pi}{sup +})=-0.09{+-}0.05{+-}0.01, where the uncertainties are statistical and systematic, respectively.},
doi = {10.1103/PhysRevLett.95.221801},
url = {https://www.osti.gov/biblio/20699601}, journal = {Physical Review Letters},
issn = {0031-9007},
number = 22,
volume = 95,
place = {United States},
year = {Fri Nov 25 00:00:00 EST 2005},
month = {Fri Nov 25 00:00:00 EST 2005}
}