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. 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.

Item Type:

Article

Related URLs:

URL	URL Type	Description
https://doi.org/10.1103/PhysRevLett.91.131801	DOI	Article
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.91.131801	Publisher	Article

ORCID:

Author	ORCID
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 Agency	Grant Number
Department of Energy (DOE)	UNSPECIFIED
NSF	UNSPECIFIED
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 Norway	UNSPECIFIED
Ministry of Education and Science of the Russian Federation	UNSPECIFIED
Particle Physics and Astronomy Research Council (PPARC)	UNSPECIFIED
Alfred P. Sloan Foundation	UNSPECIFIED
Research Corporation	UNSPECIFIED
Alexander von Humboldt Foundation	UNSPECIFIED

Issue or Number:

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

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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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