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Title: Observation of CP Violation in B{yields}{eta}'K{sup 0} Decays

Abstract

We present measurements of the time-dependent CP-violation parameters S and C in B{sup 0}{yields}{eta}{sup '}K{sup 0} decays. The data sample corresponds to 384x10{sup 6} BB pairs produced by e{sup +}e{sup -} annihilation at the {upsilon}(4S). The results are S=0.58{+-}0.10{+-}0.03 and C=-0.16{+-}0.07{+-}0.03. We observe mixing-induced CP violation with a significance of 5.5 standard deviations in this b{yields}s penguin dominated mode.

Authors:
; ; ; ; ; ; ; ;  [1];  [2];  [3]; ; ; ; ;  [4]; ; ;  [5];  [6]
  1. Laboratoire de Physique des Particules, IN2P3/CNRS et Universite de Savoie, F-74941 Annecy-Le-Vieux (France)
  2. Universitat de Barcelona, Facultat de Fisica, Departament ECM, E-08028 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. University of Bergen, Institute of Physics, N-5007 Bergen (Norway)
  6. Lawrence Berkeley National Laboratory and University of California, Berkeley, California 94720 (United States) (and others)
Publication Date:
OSTI Identifier:
20861614
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 98; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevLett.98.031801; (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; B NEUTRAL MESONS; CP INVARIANCE; ELECTRON-POSITRON INTERACTIONS; ELECTRONS; ETA MESONS; KAONS NEUTRAL; PAIR PRODUCTION; PARTICLE DECAY; POSITRONS; TIME DEPENDENCE

Citation Formats

Aubert, B., Bona, M., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J. P., Poireau, V., Tisserand, V., Zghiche, A., Grauges, E., Palano, A., Chen, J. C., Qi, N. D., Rong, G., Wang, P., Zhu, Y. S., Eigen, G., Ofte, I., Stugu, B., and Abrams, G. S. Observation of CP Violation in B{yields}{eta}'K{sup 0} Decays. United States: N. p., 2007. Web. doi:10.1103/PHYSREVLETT.98.031801.
Aubert, B., Bona, M., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J. P., Poireau, V., Tisserand, V., Zghiche, A., Grauges, E., Palano, A., Chen, J. C., Qi, N. D., Rong, G., Wang, P., Zhu, Y. S., Eigen, G., Ofte, I., Stugu, B., & Abrams, G. S. Observation of CP Violation in B{yields}{eta}'K{sup 0} Decays. United States. doi:10.1103/PHYSREVLETT.98.031801.
Aubert, B., Bona, M., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J. P., Poireau, V., Tisserand, V., Zghiche, A., Grauges, E., Palano, A., Chen, J. C., Qi, N. D., Rong, G., Wang, P., Zhu, Y. S., Eigen, G., Ofte, I., Stugu, B., and Abrams, G. S. Fri . "Observation of CP Violation in B{yields}{eta}'K{sup 0} Decays". United States. doi:10.1103/PHYSREVLETT.98.031801.
@article{osti_20861614,
title = {Observation of CP Violation in B{yields}{eta}'K{sup 0} Decays},
author = {Aubert, B. and Bona, M. 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 Chen, J. C. and Qi, N. D. and Rong, G. and Wang, P. and Zhu, Y. S. and Eigen, G. and Ofte, I. and Stugu, B. and Abrams, G. S.},
abstractNote = {We present measurements of the time-dependent CP-violation parameters S and C in B{sup 0}{yields}{eta}{sup '}K{sup 0} decays. The data sample corresponds to 384x10{sup 6} BB pairs produced by e{sup +}e{sup -} annihilation at the {upsilon}(4S). The results are S=0.58{+-}0.10{+-}0.03 and C=-0.16{+-}0.07{+-}0.03. We observe mixing-induced CP violation with a significance of 5.5 standard deviations in this b{yields}s penguin dominated mode.},
doi = {10.1103/PHYSREVLETT.98.031801},
journal = {Physical Review Letters},
number = 3,
volume = 98,
place = {United States},
year = {Fri Jan 19 00:00:00 EST 2007},
month = {Fri Jan 19 00:00:00 EST 2007}
}