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Branching fraction measurement of B^+ → ωℓ^+ν decays

Lees, J. P. and Chao, D. S. and Cheng, C. H. and Echenard, B. and Flood, K. T. and Hitlin, D. G. and Ongmongkolkul, P. and Porter, F. C. and Rakitin, A. Y. (2013) Branching fraction measurement of B^+ → ωℓ^+ν decays. Physical Review D, 87 (3). Art. No. 032004. ISSN 2470-0010. doi:10.1103/PhysRevD.87.032004. https://resolver.caltech.edu/CaltechAUTHORS:20130314-092302042

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Abstract

We present a measurement of the B^+ → ωℓ^+ν branching fraction based on a sample of 467 million BB pairs recorded by the BABAR detector at the SLAC PEP-II e+e- collider. We observe 1125±131 signal decays, corresponding to a branching fraction of B(B^+ → ωℓ^+ν)=(1.21±0.14±0.08)×10^(-4), where the first error is statistical and the second is systematic. The dependence of the decay rate on q^2, the invariant mass squared of the leptons, is compared to QCD predictions of the form factors based on a quark model and light-cone sum rules.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRevD.87.032004DOIArticle
http://link.aps.org/doi/10.1103/PhysRevD.87.032004PublisherArticle
http://prd.aps.org/abstract/PRD/v87/i3/e032004PublisherArticle
ORCID:
AuthorORCID
Cheng, C. H.0000-0002-8382-0447
Hitlin, D. G.0000-0003-4028-6982
Porter, F. C.0000-0003-1948-8889
Additional Information:© 2013 American Physical Society. Received 30 May 2012; published 12 February 2013. 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), 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 Education and Science of the Russian Federation, Ministerio de Ciencia e Innovaciόn (Spain), and the Science and Technology Facilities Council (United Kingdom). Individuals have received support from the Marie-Curie IEF program (European Union), the A. P. Sloan Foundation (USA) and the Binational Science Foundation (USA-Israel).
Funders:
Funding AgencyGrant Number
Department of Energy (DOE)UNSPECIFIED
NSFUNSPECIFIED
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
Commissariat à l’Energie Atomique (CEA)UNSPECIFIED
Bundesministerium für Bildung und Forschung (BMBF)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
Science and Technology Facilities Council (STFC)UNSPECIFIED
Marie Curie FellowshipUNSPECIFIED
Alfred P. Sloan FoundationUNSPECIFIED
Binational Science Foundation (USA-Israel)UNSPECIFIED
Institut National de Physique Nucléaire et de Physique des Particules (IN2P3)UNSPECIFIED
Ministerio de Ciencia e Innovaciόn (MICINN)UNSPECIFIED
Deutsche Forschungsgemeinschaft (DFG)UNSPECIFIED
Issue or Number:3
Classification Code:PACS: 14.40.Nd, 12.15.Hh, 13.20.He
DOI:10.1103/PhysRevD.87.032004
Record Number:CaltechAUTHORS:20130314-092302042
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20130314-092302042
Official Citation:Branching fraction measurement of B+→ωℓ+ν decays J. P. Lees et al. (BABAR Collaboration) Published 12 February 2013 (11 pages) 032004
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:37514
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:14 Mar 2013 17:12
Last Modified:09 Nov 2021 23:29

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