We measure the branching fraction (B), polarization (fL), and CP asymmetry (ACP) of B±→ρ±ρ0 decays and search for the decay B±→ρ±f0(980) based on a data sample of 231.8×106 Υ(4S)→BB̄ decays collected with the BABAR detector at the SLAC PEP-II asymmetric-energy B factory. In B±→ρ±ρ0 decays we measure B=(16.8±2.2±2.3)×10-6, fL=0.905±0.042-0. 027+0.023, and ACP=-0.12±0.13±0.10, and find an upper limit on the branching fraction of B±→ρ±f0(980)(→π+π-) decays of 1.9×10-6 at 90% confidence level.

Aubert, B., Bona, M., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J., et al. (2006). Measurements of branching fraction, polarization, and charge asymmetry of B±→ρ±ρ0 and a search for B±→ρ± f0(980). PHYSICAL REVIEW LETTERS, 97(26) [10.1103/PhysRevLett.97.261801].

Measurements of branching fraction, polarization, and charge asymmetry of B±→ρ±ρ0 and a search for B±→ρ± f0(980)

Carpinelli M;
2006

Abstract

We measure the branching fraction (B), polarization (fL), and CP asymmetry (ACP) of B±→ρ±ρ0 decays and search for the decay B±→ρ±f0(980) based on a data sample of 231.8×106 Υ(4S)→BB̄ decays collected with the BABAR detector at the SLAC PEP-II asymmetric-energy B factory. In B±→ρ±ρ0 decays we measure B=(16.8±2.2±2.3)×10-6, fL=0.905±0.042-0. 027+0.023, and ACP=-0.12±0.13±0.10, and find an upper limit on the branching fraction of B±→ρ±f0(980)(→π+π-) decays of 1.9×10-6 at 90% confidence level.
Articolo in rivista - Articolo scientifico
Electromagnetic wave polarization; Electron energy levels; Particle detectors; Branching fraction; Data samples; Upper limits; Charged particles;
English
2006
97
26
261801
none
Aubert, B., Bona, M., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J., et al. (2006). Measurements of branching fraction, polarization, and charge asymmetry of B±→ρ±ρ0 and a search for B±→ρ± f0(980). PHYSICAL REVIEW LETTERS, 97(26) [10.1103/PhysRevLett.97.261801].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/389742
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