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First observation of CP violation and improved measurement of the branching fraction and polarization of B0 -> D*+ D*- decays

Abstract:

We report the measurement of the branching fraction, the polarization, and the parameters of the time-dependent CP violation in B0 -> D*+ D*- decays using a data sample of 772 million BB pairs, collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We obtain a branching fraction of B = (7.82 +- 0.38 +- 0.63) x10^{-4}, a CP-odd fraction of R_\perp = 0.138 +- 0.024 +- 0.006 and, additionally, a fraction of the longitudinal component in the trans...

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Publisher copy:
10.1103/PhysRevD.86.071103

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Journal:
Phys. Rev. D
Volume:
86
Issue:
7
Pages:
071103
Publication date:
2012-07-24
DOI:
EISSN:
1550-2368
ISSN:
1550-7998
URN:
uuid:97b8a150-e756-44a7-8cbf-384b91874ca3
Source identifiers:
344420
Local pid:
pubs:344420
Keywords:

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