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Measurement of Time-Dependent CP Asymmetries and the CP-Odd Fraction in the Decay B^0→D*+D*−

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. 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.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1103/PhysRevLett.91.131801DOIArticle
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.91.131801PublisherArticle
ORCID:
AuthorORCID
Dubois-Felsmann, G. P.0000-0003-1598-6979
Hitlin, D. G.0000-0003-4028-6982
Porter, F. C.0000-0003-1948-8889
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.
Funders:
Funding AgencyGrant Number
Department of Energy (DOE)UNSPECIFIED
NSFUNSPECIFIED
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
Institute of High Energy Physics (China)UNSPECIFIED
Commissariat à l'Énergie Atomique et aux Énergies Alternatives (CEA)UNSPECIFIED
Centre National de la Recherche Scientifique (CNRS)UNSPECIFIED
Institut National de Physique Nucléaire et de Physique des Particules (IN2P3)UNSPECIFIED
Bundesministerium für Bildung und Forschung (BMBF)UNSPECIFIED
Deutsche Forschungsgemeinschaft (DFG)UNSPECIFIED
Istituto Nazionale di Fisica Nucleare (INFN)UNSPECIFIED
Stichting voor Fundamenteel Onderzoek der Materie (FOM)UNSPECIFIED
Research Council of NorwayUNSPECIFIED
Ministry of Education and Science of the Russian FederationUNSPECIFIED
Particle Physics and Astronomy Research Council (PPARC)UNSPECIFIED
Alfred P. Sloan FoundationUNSPECIFIED
Research CorporationUNSPECIFIED
Alexander von Humboldt FoundationUNSPECIFIED
Issue or Number:13
Classification Code:PACS numbers: 13.25.Hw, 11.30.Er, 12.15.Hh
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:09 Mar 2020 13:18

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