Aubert, B. and Albert, J. and Chen, E. and Dubois-Felsmann, G. P. and Dvoretskii, A. and Hitlin, D. G. and Narsky, I. and Porter, F. C. and Ryd, A. and Samuel, A. and Yang, S. (2003) Measurement of Time-Dependent CP Asymmetries and the CP-Odd Fraction in the Decay B^0→D*+D*−. Physical Review Letters, 91 (13). Art. No. 131801. ISSN 0031-9007. doi:10.1103/PhysRevLett.91.131801. https://resolver.caltech.edu/CaltechAUTHORS:20170809-152449422
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Abstract
We present a measurement of time-dependent CP asymmetries and an updated determination of the CP-odd fraction in the decay B^0→D*+D*− using a data sample of 88×10^6 BB[overbar] pairs collected by the BABAR detector at the PEP-II B Factory at SLAC. We determine the CP-odd fraction to be 0.063±0.055(stat)±0.009(syst). The time-dependent CP asymmetry parameters Im(λ_+) and |λ_+|are determined to be 0.05±0.29(stat)±0.10(syst) and 0.75±0.19(stat)±0.02(syst), respectively. The standard model predicts these parameters to be −sin2β and 1, respectively, in the absence of penguin diagram contributions.
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Additional Information: | © 2003 The American Physical Society. Received 21 June 2003. We are grateful for the excellent luminosity and machine conditions provided by our PEP-II colleagues and for the substantial dedicated effort from the computing organizations that support BABAR. The collaborating institutions wish to thank SLAC for its support and kind hospitality. This work is supported by the DOE and NSF (USA), NSERC (Canada), IHEP (China), CEA and CNRS-IN2P3 (France), BMBF and DFG (Germany), INFN (Italy), FOM (The Netherlands), NFR (Norway), MIST (Russia), and PPARC (United Kingdom). Individuals have received support from the A. P. Sloan Foundation, the Research Corporation, and the Alexander von Humboldt Foundation. | ||||||||||||||||||||||||||||||||||||
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Issue or Number: | 13 | ||||||||||||||||||||||||||||||||||||
Classification Code: | PACS numbers: 13.25.Hw, 11.30.Er, 12.15.Hh | ||||||||||||||||||||||||||||||||||||
DOI: | 10.1103/PhysRevLett.91.131801 | ||||||||||||||||||||||||||||||||||||
Record Number: | CaltechAUTHORS:20170809-152449422 | ||||||||||||||||||||||||||||||||||||
Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20170809-152449422 | ||||||||||||||||||||||||||||||||||||
Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||||||||||||||||||||||||||
ID Code: | 80037 | ||||||||||||||||||||||||||||||||||||
Collection: | CaltechAUTHORS | ||||||||||||||||||||||||||||||||||||
Deposited By: | Tony Diaz | ||||||||||||||||||||||||||||||||||||
Deposited On: | 09 Aug 2017 22:51 | ||||||||||||||||||||||||||||||||||||
Last Modified: | 15 Nov 2021 17:52 |
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