Measurement of Semileptonic B Decays into Orbitally Excited Charmed Mesons
We present a study of B decays into semileptonic final states containing charged and neutral D1(2420) and D2*(2460). The analysis is based on a data sample of 208 fb-1 collected at the Υ(4S) resonance with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC. With a simultaneous f...
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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/1721.1/55380 https://orcid.org/0000-0002-7586-7253 https://orcid.org/0000-0002-8667-5660 |
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| author | Zhao, M. Yamamoto, R. K. Sciolla, Gabriella Dujmic, Denis Taylor, Frank E Spitznagel, Michael A Cowan, Ray F Fisher, Peter H |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Zhao, M. Yamamoto, R. K. Sciolla, Gabriella Dujmic, Denis Taylor, Frank E Spitznagel, Michael A Cowan, Ray F Fisher, Peter H |
| author_sort | Zhao, M. |
| collection | MIT |
| description | We present a study of B decays into semileptonic final states containing charged and neutral D1(2420) and D2*(2460). The analysis is based on a data sample of 208 fb-1 collected at the Υ(4S) resonance with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC. With a simultaneous fit to four different decay chains, the semileptonic branching fractions are extracted from measurements of the mass difference Δm=m(D**)-m(D) distributions. Product branching fractions are determined to be B(B+-->D10ℓ+νℓ)×B(D10-->D*+pi-)=(2.97±0.17±0.17)×10[superscript -3], B(B+-->D2*0ℓ+νℓ)×B(D2*0→D(*)+pi-)=(2.29±0.23±0.21)×10[superscript -3], B(B0-->D1-ℓ+νℓ)×B(D1--->D*0pi-)=(2.78±0.24±0.25)×10[superscript -3] and B(B0-->D2*-ℓ+νℓ)×B(D2*- -->D(*)0pi-)=(1.77±0.26±0.11)×10[superscript -3]. In addition we measure the branching ratio Gamma(D2*-->Dpi-)/Gamma(D2*-->D(*)pi-)=0.62±0.03±0.02. |
| first_indexed | 2024-09-23T10:15:22Z |
| format | Article |
| id | mit-1721.1/55380 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T10:15:22Z |
| publishDate | 2010 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/553802023-02-26T04:12:16Z Measurement of Semileptonic B Decays into Orbitally Excited Charmed Mesons Zhao, M. Yamamoto, R. K. Sciolla, Gabriella Dujmic, Denis Taylor, Frank E Spitznagel, Michael A Cowan, Ray F Fisher, Peter H Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Fisher, Peter H. Zhao, M. Yamamoto, R. K. Taylor, Frank E. Spitznagel, M. Sciolla, Gabriella Dujmic, Denis Cowan, Ray Franklin Fisher, Peter H. We present a study of B decays into semileptonic final states containing charged and neutral D1(2420) and D2*(2460). The analysis is based on a data sample of 208 fb-1 collected at the Υ(4S) resonance with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC. With a simultaneous fit to four different decay chains, the semileptonic branching fractions are extracted from measurements of the mass difference Δm=m(D**)-m(D) distributions. Product branching fractions are determined to be B(B+-->D10ℓ+νℓ)×B(D10-->D*+pi-)=(2.97±0.17±0.17)×10[superscript -3], B(B+-->D2*0ℓ+νℓ)×B(D2*0→D(*)+pi-)=(2.29±0.23±0.21)×10[superscript -3], B(B0-->D1-ℓ+νℓ)×B(D1--->D*0pi-)=(2.78±0.24±0.25)×10[superscript -3] and B(B0-->D2*-ℓ+νℓ)×B(D2*- -->D(*)0pi-)=(1.77±0.26±0.11)×10[superscript -3]. In addition we measure the branching ratio Gamma(D2*-->Dpi-)/Gamma(D2*-->D(*)pi-)=0.62±0.03±0.02. Science and Technology Facilities Council, United Kingdom MEC (Spain) Ministry of Education and Science of the Russian Federation Norges forskningsråd FOM of the Netherlands Istituto Nazionale di Fisica Nucleare of Italy Institut National de Physique Nucleaire et Physique des Particules/CNRS Deutsche Forschungsgemeinschaft Bundesministerium für Bildung und Forschung, Germany Commissariat à l'Energie Atomique (France) Natural Sciences and Engineering Research Council of Canada National Science Foundation United States Department of Energy 2010-06-03T16:28:04Z 2010-06-03T16:28:04Z 2009-07 2008-08 Article http://purl.org/eprint/type/JournalArticle 0031-9007 http://hdl.handle.net/1721.1/55380 BABAR Collaboration et al. “Measurement of Semileptonic B Decays into Orbitally Excited Charmed Mesons.” Physical Review Letters 103.5 (2009): 051803. © 2009 American Physical Society. https://orcid.org/0000-0002-7586-7253 https://orcid.org/0000-0002-8667-5660 en_US http://dx.doi.org/10.1103/PhysRevLett.103.051803 Physical Review Letters 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 | Zhao, M. Yamamoto, R. K. Sciolla, Gabriella Dujmic, Denis Taylor, Frank E Spitznagel, Michael A Cowan, Ray F Fisher, Peter H Measurement of Semileptonic B Decays into Orbitally Excited Charmed Mesons |
| title | Measurement of Semileptonic B Decays into Orbitally Excited Charmed Mesons |
| title_full | Measurement of Semileptonic B Decays into Orbitally Excited Charmed Mesons |
| title_fullStr | Measurement of Semileptonic B Decays into Orbitally Excited Charmed Mesons |
| title_full_unstemmed | Measurement of Semileptonic B Decays into Orbitally Excited Charmed Mesons |
| title_short | Measurement of Semileptonic B Decays into Orbitally Excited Charmed Mesons |
| title_sort | measurement of semileptonic b decays into orbitally excited charmed mesons |
| url | http://hdl.handle.net/1721.1/55380 https://orcid.org/0000-0002-7586-7253 https://orcid.org/0000-0002-8667-5660 |
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