Measurement of the branching fraction and Lamda[over-bar] polarization in B0-->Lambda[over-bar]pPi[superscript -]
We present a measurement of the B0-->Lambda[over-bar] pPi[superscript -] branching fraction performed using the BABAR detector at the PEP-II asymmetric e[superscript +]e[superscript -] collider. Based on a sample of 467×10[superscript 6] B[bar-over B] pairs we measure B(B0-->Lambda[over-bar]...
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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/1721.1/54718 https://orcid.org/0000-0002-8667-5660 |
| _version_ | 1826195546289733632 |
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| author | Zhao, M. Yamamoto, R. K. Sciolla, Gabriella Henderson, Shawn Wesley 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 Henderson, Shawn Wesley Spitznagel, Michael A Cowan, Ray F Fisher, Peter H |
| author_sort | Zhao, M. |
| collection | MIT |
| description | We present a measurement of the B0-->Lambda[over-bar] pPi[superscript -] branching fraction performed using the BABAR detector at the PEP-II asymmetric e[superscript +]e[superscript -] collider. Based on a sample of 467×10[superscript 6] B[bar-over B] pairs we measure B(B0-->Lambda[over-bar] pPi[superscript -])=[3.07±0.31 (stat)±0.23 (syst)]×10[superscript -6]. The measured differential spectrum as a function of the dibaryon invariant mass m(Lambda[over-bar]p) shows a near-threshold enhancement similar to that observed in other baryonic B decays. We study the Lambda[over-bar] polarization as a function of Lambda[over-bar] energy in the B[superscript 0] rest frame (E[superscript *]Lambda[over-bar]) and compare it with theoretical expectations of fully longitudinally right-polarized Lambda[over-bar] at large E[superscript *]Lambda[over-bar]. |
| first_indexed | 2024-09-23T10:14:26Z |
| format | Article |
| id | mit-1721.1/54718 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T10:14:26Z |
| publishDate | 2010 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/547182023-02-26T06:03:28Z Measurement of the branching fraction and Lamda[over-bar] polarization in B0-->Lambda[over-bar]pPi[superscript -] Measurement of the branching fraction and Λ̅ polarization in B0→Λ̅ pπ- Zhao, M. Yamamoto, R. K. Sciolla, Gabriella Henderson, Shawn Wesley 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. Spitznagel, M. Sciolla, Gabriella Henderson, Shawn Wesley Cowan, Ray Franklin Fisher, Peter H. We present a measurement of the B0-->Lambda[over-bar] pPi[superscript -] branching fraction performed using the BABAR detector at the PEP-II asymmetric e[superscript +]e[superscript -] collider. Based on a sample of 467×10[superscript 6] B[bar-over B] pairs we measure B(B0-->Lambda[over-bar] pPi[superscript -])=[3.07±0.31 (stat)±0.23 (syst)]×10[superscript -6]. The measured differential spectrum as a function of the dibaryon invariant mass m(Lambda[over-bar]p) shows a near-threshold enhancement similar to that observed in other baryonic B decays. We study the Lambda[over-bar] polarization as a function of Lambda[over-bar] energy in the B[superscript 0] rest frame (E[superscript *]Lambda[over-bar]) and compare it with theoretical expectations of fully longitudinally right-polarized Lambda[over-bar] at large E[superscript *]Lambda[over-bar]. 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 Deutsche Forschungsgemeinschaft Bundesministerium für Bildung und Forschung, Germany Institut National de Physique Nucleaire et Physique des Particules/CNRS Commissariat à l'Energie Atomique Natural Sciences and Engineering Research Council of Canada National Science Foundation United States Department of Energy 2010-05-05T18:33:41Z 2010-05-05T18:33:41Z 2009-06 2009-04 Article http://purl.org/eprint/type/JournalArticle 1550-7998 http://hdl.handle.net/1721.1/54718 BABAR Collaboration et al. “Measurement of the branching fraction and Lambda[over-bar] polarization in B-->Lambda[over-bar]p pi[superscript -].” Physical Review D 79.11 (2009): 112009. © American Physical Society. https://orcid.org/0000-0002-8667-5660 en_US http://dx.doi.org/10.1103/PhysRevD.79.112009 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 | Zhao, M. Yamamoto, R. K. Sciolla, Gabriella Henderson, Shawn Wesley Spitznagel, Michael A Cowan, Ray F Fisher, Peter H Measurement of the branching fraction and Lamda[over-bar] polarization in B0-->Lambda[over-bar]pPi[superscript -] |
| title | Measurement of the branching fraction and Lamda[over-bar] polarization in B0-->Lambda[over-bar]pPi[superscript -] |
| title_full | Measurement of the branching fraction and Lamda[over-bar] polarization in B0-->Lambda[over-bar]pPi[superscript -] |
| title_fullStr | Measurement of the branching fraction and Lamda[over-bar] polarization in B0-->Lambda[over-bar]pPi[superscript -] |
| title_full_unstemmed | Measurement of the branching fraction and Lamda[over-bar] polarization in B0-->Lambda[over-bar]pPi[superscript -] |
| title_short | Measurement of the branching fraction and Lamda[over-bar] polarization in B0-->Lambda[over-bar]pPi[superscript -] |
| title_sort | measurement of the branching fraction and lamda over bar polarization in b0 lambda over bar ppi superscript |
| url | http://hdl.handle.net/1721.1/54718 https://orcid.org/0000-0002-8667-5660 |
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