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Measurement of time-dependent CP asymmetries in B^0→D^((*)±)π^∓ and B^0→D^±ρ^∓ decays

Aubert, B. and Albert, J. and Chen, E. and Dubois-Felsmann, G. P. and Dvoretskii, A. and Hitlin, D. G. and Narsky, I. and Piatenko, T. and Porter, F. C. and Ryd, A. and Samuel, A. (2006) Measurement of time-dependent CP asymmetries in B^0→D^((*)±)π^∓ and B^0→D^±ρ^∓ decays. Physical Review D, 73 (11). Art. No. 111101. ISSN 2470-0010.

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We present updated results on time-dependent CP asymmetries in fully reconstructed B^0→D^((*)±)π^∓ and B^0→D^±ρ^∓ decays in approximately 232×10^6 Υ(4S)→BB events collected with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC. From a time-dependent maximum-likelihood fit we obtain for the parameters related to the CP violation angle 2β+γ: a^(Dπ)=-0.010±0.023±0.007, c_(lep)^(Dπ)=-0.033±0.042±0.012, a^(D*π)=-0.040±0.023±0.010, c_(lep)D^(*π)=0.049± 0.042±0.015,a^(Dρ)=-0.024±0.031±0.009, c_(lep)^(Dρ)=-0.098±0.055±0.018, where the first error is statistical and the second is systematic. Using other measurements and theoretical assumptions, we interpret the results in terms of the angles of the Cabibbo-Kobayashi-Maskawa unitarity triangle and find |sin⁡(2β+γ)|>0.64  (0.40) at 68% (90%) confidence level.

Item Type:Article
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Dubois-Felsmann, G. P.0000-0003-1598-6979
Hitlin, D. G.0000-0003-4028-6982
Porter, F. C.0000-0003-1948-8889
Additional Information:© 2006 The American Physical Society. Received 2 March 2006; published 2 June 2006. 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 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 CONACyT (Mexico), Marie Curie EIF (European Union), the A. P. Sloan Foundation, the Research Corporation, and the Alexander von Humboldt Foundation.
Funding AgencyGrant Number
Department of Energy (DOE)UNSPECIFIED
Natural Sciences and Engineering Research Council (Canada) (NSERC)UNSPECIFIED
Institute of High Energy Physics (China) (IHEP)UNSPECIFIED
Commissariat à l'Énergie Atomique (French Atomic Energy Commission) (CEA)UNSPECIFIED
Centre National de la Recherche Scientifique/Institut National de Physique Nucléaire et Physique des Particules (France) (CNRS/IN2P3 )UNSPECIFIED
Bundesministerium für Bildung und Forschung (German: Federal Ministry of Education and Research; Bonn, (Germany) (BMFB)UNSPECIFIED
Deutsche Forschungsgemeinschaft (German Research Council) (DFG)UNSPECIFIED
Istituto Nazionale di Fisica Nucleare, Italy (INFN)UNSPECIFIED
Foundation for Fundamental Research on Matter (The Netherlands) (FOM)UNSPECIFIED
Research Council of Norway (NFR)UNSPECIFIED
Marie Curie EIF (European Union)UNSPECIFIED
A. P. Sloan FoundationUNSPECIFIED
Research CorporationUNSPECIFIED
Alexander von Humboldt FoundationUNSPECIFIED
Issue or Number:11
Classification Code:PACS: 12.15.Hh, 11.30.Er, 13.25.Hw
Record Number:CaltechAUTHORS:20110215-072736750
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Official Citation:Measurement of time-dependent CP asymmetries in B0→D(*)±π∓ and B0→D±ρ∓ decays B. Aubert et al. (BABAR Collaboration) Published 2 June 2006 (8 pages) 111101(R)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:22178
Deposited By: Ruth Sustaita
Deposited On:15 Feb 2011 15:59
Last Modified:09 Mar 2020 13:18

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