We present measurements of CP-violating asymmetries in the decay B0→a1±(1260)π with a1±(1260) →ππ±π±. The data sample corresponds to 384×106 BB̄ pairs collected with the BABAR detector at the PEP-II asymmetric B factory at SLAC. We measure the CP-violating asymmetry ACPa1π=-0.07±0. 07±0.02, the mixing-induced CP violation parameter Sa1π=0.37±0. 21±0.07, the direct CP violation parameter Ca1π=-0.10±0. 15±0.09, and the parameters ΔCa1π=0.26±0.15±0.07 and ΔSa1π=-0.14±0.21±0.06. From these measured quantities we determine the angle αeff=78.6°±7.3°. © 2007 The American Physical Society.

Aubert, B., Bona, M., Boutigny, D., Karyotakis, Y., Lees, J., Poireau, V., et al. (2007). Measurements of CP-violating asymmetries in B0→a1±(1260)π decays. PHYSICAL REVIEW LETTERS, 98(18), 1-7 [10.1103/PhysRevLett.98.181803].

Measurements of CP-violating asymmetries in B0→a1±(1260)π decays

PATRIGNANI, CLAUDIA;
2007

Abstract

We present measurements of CP-violating asymmetries in the decay B0→a1±(1260)π with a1±(1260) →ππ±π±. The data sample corresponds to 384×106 BB̄ pairs collected with the BABAR detector at the PEP-II asymmetric B factory at SLAC. We measure the CP-violating asymmetry ACPa1π=-0.07±0. 07±0.02, the mixing-induced CP violation parameter Sa1π=0.37±0. 21±0.07, the direct CP violation parameter Ca1π=-0.10±0. 15±0.09, and the parameters ΔCa1π=0.26±0.15±0.07 and ΔSa1π=-0.14±0.21±0.06. From these measured quantities we determine the angle αeff=78.6°±7.3°. © 2007 The American Physical Society.
2007
Aubert, B., Bona, M., Boutigny, D., Karyotakis, Y., Lees, J., Poireau, V., et al. (2007). Measurements of CP-violating asymmetries in B0→a1±(1260)π decays. PHYSICAL REVIEW LETTERS, 98(18), 1-7 [10.1103/PhysRevLett.98.181803].
Aubert, B; Bona, M.; Boutigny, D.; Karyotakis, Y.; Lees, J.P.; Poireau, V.; Prudent, X.; Tisserand, V.; Zghiche, A.; Grauges, E.; Palano, A.; Chen, J....espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/550664
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