Search for B+-->[script l]+ν[script l] recoiling against B -->D0[script l]- [v over-bar]X
We present a search for the decay B+→ℓ+νℓ(ℓ=τ,μ, or e) in (458.9±5.1)×106 BB̅ pairs recorded with the BABAR detector at the PEP-II B-factory. We search for these B decays in a sample of B+B- events where one B-meson is reconstructed as B-→D0ℓ-ν̅ X. Using the method of Feldman and Cousins, we obtain...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2010
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| Online Access: | http://hdl.handle.net/1721.1/58979 https://orcid.org/0000-0002-8667-5660 |
| _version_ | 1826198451705085952 |
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| author | Dujmic, Denis Henderson, Shawn Wesley Sciolla, Gabriella Zhao, M. Cowan, Ray F Fisher, Peter H Spitznagel, Michael A Yamamoto, R. K. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Dujmic, Denis Henderson, Shawn Wesley Sciolla, Gabriella Zhao, M. Cowan, Ray F Fisher, Peter H Spitznagel, Michael A Yamamoto, R. K. |
| author_sort | Dujmic, Denis |
| collection | MIT |
| description | We present a search for the decay B+→ℓ+νℓ(ℓ=τ,μ, or e) in (458.9±5.1)×106 BB̅ pairs recorded with the BABAR detector at the PEP-II B-factory. We search for these B decays in a sample of B+B- events where one B-meson is reconstructed as B-→D0ℓ-ν̅ X. Using the method of Feldman and Cousins, we obtain B(B+→τ+ντ)=(1.7±0.8±0.2)×10-4, which excludes zero at 2.3σ. We interpret the central value in the context of the standard model and find the B meson decay constant to be fB2=(62±31)×103 MeV2. We find no evidence for B+→e+νe and B+→μ+νμ and set upper limits at the 90% C.L. B(B+→e+νe)<0.8×10-5 and B(B+→μ+νμ)<1.1×10-5. |
| first_indexed | 2024-09-23T11:05:10Z |
| format | Article |
| id | mit-1721.1/58979 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T11:05:10Z |
| publishDate | 2010 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/589792023-02-26T05:51:08Z Search for B+-->[script l]+ν[script l] recoiling against B -->D0[script l]- [v over-bar]X Search for B+→ℓ+νℓ recoiling against B-→D0ℓ-ν̅ X Dujmic, Denis Henderson, Shawn Wesley Sciolla, Gabriella Zhao, M. Cowan, Ray F Fisher, Peter H Spitznagel, Michael A Yamamoto, R. K. Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Fisher, Peter H. Cowan, Ray Franklin Dujmic, Denis Fisher, Peter H. Henderson, Shawn Wesley Sciolla, Gabriella Spitznagel, M. Yamamoto, Richard K. Zhao, M. We present a search for the decay B+→ℓ+νℓ(ℓ=τ,μ, or e) in (458.9±5.1)×106 BB̅ pairs recorded with the BABAR detector at the PEP-II B-factory. We search for these B decays in a sample of B+B- events where one B-meson is reconstructed as B-→D0ℓ-ν̅ X. Using the method of Feldman and Cousins, we obtain B(B+→τ+ντ)=(1.7±0.8±0.2)×10-4, which excludes zero at 2.3σ. We interpret the central value in the context of the standard model and find the B meson decay constant to be fB2=(62±31)×103 MeV2. We find no evidence for B+→e+νe and B+→μ+νμ and set upper limits at the 90% C.L. B(B+→e+νe)<0.8×10-5 and B(B+→μ+νμ)<1.1×10-5. United States. Dept. of Energy Natural Sciences and Engineering Research Council Canada France. Commissariat à l'énergie atomique Institut national de physique nucléaire et de physique des particules Germany. Bundesministerium für Bildung und Forschung Deutsche Forschungsgemeinschaft Istituto nazionale di fisica nucleare Stichting voor Fundamenteel Onderzoek der Materie Norges forskningsråd Russia (Federation). Ministerstvo obrazovanii︠a︡ i nauki Spain. Ministerio de Educación y Ciencia Science and Technology Facilities Council (Great Britain) Marie Curie International Fellowship Alfred P. Sloan Foundation National Science Foundation (U.S.) 2010-10-08T17:36:00Z 2010-10-08T17:36:00Z 2010-03 2009-12 Article http://purl.org/eprint/type/JournalArticle 1550-7998 1550-2368 http://hdl.handle.net/1721.1/58979 B. Aubert et al. (2010). Search for B+→ℓ+νℓ recoiling against B-→D0ℓ-ν̅ X. Phys. rev. D 81: 051101/1-9. © 2010 The American Physical Society https://orcid.org/0000-0002-8667-5660 en_US http://dx.doi.org/10.1103/PhysRevD.81.051101 Physical review D Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society APS |
| spellingShingle | Dujmic, Denis Henderson, Shawn Wesley Sciolla, Gabriella Zhao, M. Cowan, Ray F Fisher, Peter H Spitznagel, Michael A Yamamoto, R. K. Search for B+-->[script l]+ν[script l] recoiling against B -->D0[script l]- [v over-bar]X |
| title | Search for B+-->[script l]+ν[script l] recoiling against B -->D0[script l]- [v over-bar]X |
| title_full | Search for B+-->[script l]+ν[script l] recoiling against B -->D0[script l]- [v over-bar]X |
| title_fullStr | Search for B+-->[script l]+ν[script l] recoiling against B -->D0[script l]- [v over-bar]X |
| title_full_unstemmed | Search for B+-->[script l]+ν[script l] recoiling against B -->D0[script l]- [v over-bar]X |
| title_short | Search for B+-->[script l]+ν[script l] recoiling against B -->D0[script l]- [v over-bar]X |
| title_sort | search for b script l ν script l recoiling against b d0 script l v over bar x |
| url | http://hdl.handle.net/1721.1/58979 https://orcid.org/0000-0002-8667-5660 |
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