We present an updated measurement of time-dependent CP asymmetries and the CP-odd fraction in the decay B0→D*+D*- using 232×106BB» pairs collected by the BABAR detector at the SLAC PEP-II B factory. We determine the CP-odd fraction to be 0.125±0. 044(stat)±0.007(syst). The time-dependent CP asymmetry parameters C+ and S+ are determined to be 0.06±0.17(stat)±0. 03(syst) and -0.75±0.25(stat)±0.03(syst), respectively. The standard model predicts these parameters to be 0 and -sinâ□¡2Î, respectively, in the absence of penguin amplitude contributions. © 2005 The American Physical Society.

Aubert, B., Barate, R., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J.P., et al. (2005). Measurement of time-dependent CP asymmetries and the CP-Odd fraction in the decay B0→D*+D*. PHYSICAL REVIEW LETTERS, 95(15), 1-7 [10.1103/PhysRevLett.95.151804].

Measurement of time-dependent CP asymmetries and the CP-Odd fraction in the decay B0→D*+D*

PATRIGNANI, CLAUDIA;
2005

Abstract

We present an updated measurement of time-dependent CP asymmetries and the CP-odd fraction in the decay B0→D*+D*- using 232×106BB» pairs collected by the BABAR detector at the SLAC PEP-II B factory. We determine the CP-odd fraction to be 0.125±0. 044(stat)±0.007(syst). The time-dependent CP asymmetry parameters C+ and S+ are determined to be 0.06±0.17(stat)±0. 03(syst) and -0.75±0.25(stat)±0.03(syst), respectively. The standard model predicts these parameters to be 0 and -sinâ□¡2Î, respectively, in the absence of penguin amplitude contributions. © 2005 The American Physical Society.
2005
Aubert, B., Barate, R., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J.P., et al. (2005). Measurement of time-dependent CP asymmetries and the CP-Odd fraction in the decay B0→D*+D*. PHYSICAL REVIEW LETTERS, 95(15), 1-7 [10.1103/PhysRevLett.95.151804].
Aubert, B.; Barate, R.; Boutigny, D.; Couderc, F.; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Tisserand, V.; Zghiche, A.; Grauges, E.; Palano, A.; Papp...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/552787
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