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Título : Improved measurement of time-dependent CP asymmetries and the CP-odd fraction in the decay B(0) -> D*D(+)*(-)
Autor : Grauges, E., Davier, Michel, Chen, Shaomin, Azzolini, Virginia, López-March, Neus, Martínez-Vidal, Fernando, Milanés, Diego A., Oyanguren, Arantza, Höcker, Andreas, Babar Collaboration, Aubert, B.
Palabras clave : Violating asymmetries
[PACS] Hadronic decays of bottom mesons
[PACS] Charge conjugation, parity, time reversal, and other discrete symmetries in particles and fields
[PACS] Determination of electroweak Kobayashi–Maskawa matrix elements
Fecha de publicación : 26-Dec-2007
Editor: American Physical Society
Citación : Physical Review D 76(11): 111102 (2007)
Resumen: We present an updated measurement of the CP-odd fraction and the time-dependent CP asymmetries in the decay B(0) -> D*D(+)*(-) using (383 ± 4)x10(6)B[overline B] pairs collected with the BABAR detector. We determine the CP-odd fraction to be 0.143±0.034(stat)±0.008(syst). The time-dependent CP asymmetry parameters are determined to be C(+)=-0.05±0.14(stat)±0.02(syst) and S(+)=-0.72±0.19(stat)±0.05(syst). The nonzero value of the measured S(+) indicates the evidence of CP violation at the 3.7σ confidence level.
Descripción : 8 pages, 3 figures, 1 table.-- PACS nrs.: 13.25.Hw; 11.30.Er; 12.15.Hh.-- ISI Article Identifier: 000251987200002.-- ArXiv pre-print available at: et al.
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ISSN: 1550-7998
DOI: 10.1103/PhysRevD.76.111102
Citación : Physical Review D 76(11): 111102 (2007)
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