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Study of the decay B^0→D^(*+)ωπ^-

Aubert, B. and Albert, J. and Chen, E. and Dvoretskii, A. and Hitlin, D. G. and Narsky, I. and Piatenko, T. and Porter, F. C. and Ryd, A. and Samuel, A. (2006) Study of the decay B^0→D^(*+)ωπ^-. Physical Review D, 74 (1). Art. No. 012001. ISSN 2470-0010. https://resolver.caltech.edu/CaltechAUTHORS:20110214-081432026

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Abstract

We report on a study of the decay B^0→D^(*+)ωπ^- with the BABAR detector at the PEP-II B-factory at the Stanford Linear Accelerator Center. Based on a sample of 232×10^6 BB decays, we measure the branching fraction B(B^0→D^(*+)ωπ^-)=(2.88±0.21(stat.)±0.31(syst.))×10^(-3). We study the invariant mass spectrum of the ωπ^- system in this decay. This spectrum is in good agreement with expectations based on factorization and the measured spectrum in τ-→ωπ-ν_τ. We also measure the polarization of the D^(*+) as a function of the ωπ^- mass. In the mass region 1.1 to 1.9 GeV we measure the fraction of longitudinal polarization of the D^(*+) to be ΓL/Γ=0.654±0.042(stat.)±0.016(syst.). This is in agreement with the expectations from heavy-quark effective theory and factorization assuming that the decay proceeds as B^(-0)→D^(*+)ρ(1450)-, ρ(1450)^-→ωπ^-.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRevD.74.012001DOIUNSPECIFIED
http://link.aps.org/doi/10.1103/PhysRevD.74.012001PublisherUNSPECIFIED
http://prd.aps.org/abstract/PRD/v74/i1/e012001PublisherUNSPECIFIED
ORCID:
AuthorORCID
Hitlin, D. G.0000-0003-4028-6982
Porter, F. C.0000-0003-1948-8889
Additional Information:© 2006 The American Physical Society. Received 4 April 2006; published 5 July 2006. We are grateful for the extraordinary contributions of our PEP-II colleagues in achieving the excellent luminosity and machine conditions that have made this work possible. The success of this project also relies critically on the expertise and dedication of the computing organizations that support BABAR. The collaborating institutions wish to thank SLAC for its support and the kind hospitality extended to them. This work is supported by the US Department of Energy and National Science Foundation, the Natural Sciences and Engineering Research Council (Canada), Institute of High Energy Physics (China), the Commissariat à l’Energie Atomique and Institut National de Physique Nucléaire et de Physique des Particules (France), the Bundesministerium für Bildung und Forschung and Deutsche Forschungsgemeinschaft (Germany), the Istituto Nazionale di Fisica Nucleare (Italy), the Foundation for Fundamental Research on Matter (The Netherlands), the Research Council of Norway, the Ministry of Science and Technology of the Russian Federation, and the Particle Physics and Astronomy Research Council (United Kingdom). Individuals have received support from CONACyT (Mexico), the Marie-Curie IEF program (European Union), 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 (Canada)UNSPECIFIED
Institute of High Energy Physics (China)UNSPECIFIED
Commissariat à l’Energie Atomique and Institut National de Physique Nucléaire et de Physique des Particules (France)UNSPECIFIED
Bundesministerium für Bildung und Forschung and Deutsche Forschungs gemeinschaft (Germany)UNSPECIFIED
Istituto Nazionale di Fisica Nucleare (Italy)UNSPECIFIED
Foundation for Fundamental Research on Matter (The Netherlands)UNSPECIFIED
Research Council of NorwayUNSPECIFIED
Ministry of Science and Technology of the Russian FederationUNSPECIFIED
Particle Physics and Astronomy Research Council (UK)UNSPECIFIED
CONACyT (Mexico)UNSPECIFIED
Marie-Curie IEF program (European Union)UNSPECIFIED
A. P. Sloan FoundationUNSPECIFIED
Research CorporationUNSPECIFIED
Alexander von Humboldt FoundationUNSPECIFIED
Issue or Number:1
Classification Code:PACS: 13.25.Hw, 12.39.St, 14.40.Nd
Record Number:CaltechAUTHORS:20110214-081432026
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20110214-081432026
Official Citation:Study of the decay B 0→D*+ωπ- B. Aubert et al. (BABAR Collaboration) Published 5 July 2006
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:22154
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:14 Feb 2011 20:02
Last Modified:09 Mar 2020 13:18

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