We present measurements of the B→η′K branching fractions; for B+→η′K+ we measure also the time-integrated charge asymmetry Ach, and for B0→η′KS0 the time-dependent CP-violation parameters S and C. The data sample corresponds to 232×106 BB̄ pairs produced by e+e- annihilation at the Υ(4S). The results are B(B→η′K+)= (68.9±2.0±3.2)×10-6, B(B0→η′K0)=(67. 4±3.3±3.2)×10-6, Ach=0.033±0.028±0.005, S=0.30±0.14±0.02, and C=-0.21±0.10±0.02, where the first error quoted is statistical and the second is systematic. © 2005 The American Physical Society.

Aubert, B., Barate, R., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J.P., et al. (2005). Measurements of branching fractions and time-dependent CP-violating asymmetries in B→η′K decays. PHYSICAL REVIEW LETTERS, 94(19), 1-7 [10.1103/PhysRevLett.94.191802].

Measurements of branching fractions and time-dependent CP-violating asymmetries in B→η′K decays

PATRIGNANI, CLAUDIA;
2005

Abstract

We present measurements of the B→η′K branching fractions; for B+→η′K+ we measure also the time-integrated charge asymmetry Ach, and for B0→η′KS0 the time-dependent CP-violation parameters S and C. The data sample corresponds to 232×106 BB̄ pairs produced by e+e- annihilation at the Υ(4S). The results are B(B→η′K+)= (68.9±2.0±3.2)×10-6, B(B0→η′K0)=(67. 4±3.3±3.2)×10-6, Ach=0.033±0.028±0.005, S=0.30±0.14±0.02, and C=-0.21±0.10±0.02, where the first error quoted is statistical and the second is systematic. © 2005 The American Physical Society.
2005
Aubert, B., Barate, R., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J.P., et al. (2005). Measurements of branching fractions and time-dependent CP-violating asymmetries in B→η′K decays. PHYSICAL REVIEW LETTERS, 94(19), 1-7 [10.1103/PhysRevLett.94.191802].
Aubert, B.; Barate, R.; Boutigny, D.; Couderc, F.; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Tisserand, V.; Zghiche, A.; Grauges-Pous, E.; Palano, A.;...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/552609
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