Published March 1, 2006
| Published
Journal Article
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Search for the decay B^+ → τ^+ν_τ
Abstract
We search for the rare leptonic decay B^+ → τ^+ν_τ in a sample of 232 × 10^6 BB̅ pairs collected with the BABAR detector at the SLAC PEP-II B-Factory. Signal events are selected by examining the properties of the B meson recoiling against the semileptonic decay B^- → D^9*0)ℓ^-ν̅_ ℓ. We find no evidence for a signal and set an upper limit on the branching fraction of B(B^+ → τ^+ν_τ)<2.8 × 10^9-4) at the 90% confidence level. We combine this result with a previous, statistically independent BABAR search for B+→τ+ντ to give an upper limit of B(B^+ → τ^+ν_τ)<2.6 × 10^(-4) at the 90% confidence level.
Additional Information
© 2006 American Physical Society. Received 14 July 2005; published 10 March 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), A. P. Sloan Foundation, Research Corporation, and Alexander von Humboldt Foundation.Attached Files
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Additional details
- Eprint ID
- 22238
- Resolver ID
- CaltechAUTHORS:20110216-093218959
- Department of Energy (DOE)
- NSF
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Institute of High Energy Physics (IHEP) (China)
- Commissariat à l'Energie Atomique (CEA) (France)
- Centre National de la Recherche Scientifique (CNRS) (France)
- Institut National de Physique Nucléaire et Physique des Particules (IN2P3) (France)
- Bundesministerium fur Bildung und Forschung (BMBF) (Germany)
- German Deutsche Forschungsgemeinschaft (DFG) (Germany)
- Istituto Nazionale di Fisica Nucleare (INFN) (Italy)
- Foundation for Fundamental Research on Matter (FOM) (The Netherlands)
- Research Council of Norway (NFR)
- MIST (Russia)
- Particle Physics and Astronomy Research Council (PPARC) (UK)
- Consejo Nacional de Ciencia y Tecnología (CONACYT) (Mexico)
- A. P. Sloan Foundation
- Research Corporation
- Alexander von Humboldt Foundation
- Created
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2011-02-16Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field