We present a measurement of the branching fraction and time-dependent CP asymmetry of B0→ρ0K0. The results are obtained from a data sample of 227×106 Υ(4S)→BB̄ decays collected with the BABAR detector at the PEP-II asymmetric-energy B factory at Stanford Linear Accelerator Center. From a time-dependent maximum likelihood fit yielding 111±19 signal events, we find B(B0→ρ0K0)=(4.9±0.8±0.9)×10-6, where the first error is statistical and the second systematic. We report the measurement of the CP parameters Sρ0KS0=0.20±0.52±0.24 and Cρ0KS0=0.64±0.41±0.20.

Aubert, B., Barate, R., Bona, M., Boutigny, D., Couderc, F., Karyotakis, Y., et al. (2007). Measurement of the CP asymmetry and branching fraction of B0→ρ0K0. PHYSICAL REVIEW LETTERS, 98(5) [10.1103/PhysRevLett.98.051803].

Measurement of the CP asymmetry and branching fraction of B0→ρ0K0

CARPINELLI, Massimo;
2007

Abstract

We present a measurement of the branching fraction and time-dependent CP asymmetry of B0→ρ0K0. The results are obtained from a data sample of 227×106 Υ(4S)→BB̄ decays collected with the BABAR detector at the PEP-II asymmetric-energy B factory at Stanford Linear Accelerator Center. From a time-dependent maximum likelihood fit yielding 111±19 signal events, we find B(B0→ρ0K0)=(4.9±0.8±0.9)×10-6, where the first error is statistical and the second systematic. We report the measurement of the CP parameters Sρ0KS0=0.20±0.52±0.24 and Cρ0KS0=0.64±0.41±0.20.
Articolo in rivista - Articolo scientifico
BABAR detector
English
2007
B. Aubert et al. (BABAR Collaboration)
Aubert, B., Barate, R., Bona, M., Boutigny, D., Couderc, F., Karyotakis, Y., et al. (2007). Measurement of the CP asymmetry and branching fraction of B0→ρ0K0. PHYSICAL REVIEW LETTERS, 98(5) [10.1103/PhysRevLett.98.051803].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/389692
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