Branching fraction measurements of charmless B0→K*0h1+h2- (h1,2=K, π) decays are presented, using a data sample of 383×106 Υ(4S)→BB̄ decays collected with the BABAR detector at the PEP-II asymmetric-energy B-meson factory at SLAC. The results are B(B0→K* 0K+K-)=(27.5±1.3±2.2)×10-6, B(B0→K*0π+K-)=(4. 6±1.1±0.8)×10-6, and B(B0→K*0π+π-)=(54. 5±2.9±4.3)×10-6. The first errors quoted are statistical and the second are systematic. An upper limit is set for B(B0→K*0K+π- )<2.2×10-6 at 90% confidence level. We also present measurements of CP-violating asymmetries for the observed decays.

Aubert, B., Bona, M., Boutigny, D., Karyotakis, Y., Lees, J., Poireau, V., et al. (2007). Measurements of the branching fractions of B0 → K*0K+K−, B0 → K*0π+K−, B0 → K*0K+π−, and B0 → K*0π+π−. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 76(7) [10.1103/PhysRevD.76.071104].

Measurements of the branching fractions of B0 → K*0K+K−, B0 → K*0π+K−, B0 → K*0K+π−, and B0 → K*0π+π−

CARPINELLI, Massimo;
2007

Abstract

Branching fraction measurements of charmless B0→K*0h1+h2- (h1,2=K, π) decays are presented, using a data sample of 383×106 Υ(4S)→BB̄ decays collected with the BABAR detector at the PEP-II asymmetric-energy B-meson factory at SLAC. The results are B(B0→K* 0K+K-)=(27.5±1.3±2.2)×10-6, B(B0→K*0π+K-)=(4. 6±1.1±0.8)×10-6, and B(B0→K*0π+π-)=(54. 5±2.9±4.3)×10-6. The first errors quoted are statistical and the second are systematic. An upper limit is set for B(B0→K*0K+π- )<2.2×10-6 at 90% confidence level. We also present measurements of CP-violating asymmetries for the observed decays.
Articolo in rivista - Articolo scientifico
BABAR detector
English
B. Aubert et al. (BABAR Collaboration)
Aubert, B., Bona, M., Boutigny, D., Karyotakis, Y., Lees, J., Poireau, V., et al. (2007). Measurements of the branching fractions of B0 → K*0K+K−, B0 → K*0π+K−, B0 → K*0K+π−, and B0 → K*0π+π−. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 76(7) [10.1103/PhysRevD.76.071104].
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