Branching fractions and CP-violating asymmetries in radiative B decays to eta K gamma
We present measurements of the CP-violation parameters S and C for the radiative decay B0-->etaKS0gamma; for B-->etaKgamma we also measure the branching fractions and for B+-->etaK+gamma the time-integrated charge asymmetry Ach. The data, collected with the BABAR detector at the Stanford...
| 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/1721.1/55356 https://orcid.org/0000-0002-7586-7253 https://orcid.org/0000-0002-8667-5660 |
| _version_ | 1826196483365404672 |
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| author | Zhao, M. Yamamoto, R. K. Taylor, Frank E. Spitznagel, M. Sciolla, Gabriella Dujmic, Denis Cowan, Ray Franklin Koeneke, Karsten 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. Taylor, Frank E. Spitznagel, M. Sciolla, Gabriella Dujmic, Denis Cowan, Ray Franklin Koeneke, Karsten Fisher, Peter H. |
| author_sort | Zhao, M. |
| collection | MIT |
| description | We present measurements of the CP-violation parameters S and C for the radiative decay B0-->etaKS0gamma; for B-->etaKgamma we also measure the branching fractions and for B+-->etaK+gamma the time-integrated charge asymmetry Ach. The data, collected with the BABAR detector at the Stanford Linear Accelerator Center, represent 465×106 BB[over-bar] pairs produced in e+e- annihilation. The results are S=-0.18[subscript -0.46][superscript +0.49]±0.12, C=-0.32[superscript -0.39][superscript +0.40]±0.07, B(B0-->etaK0gamma)=(7.1[subscript -2.0][superscript +2.1]±0.4)×10[superscript -6], B(B+-->etaK+gamma)=(7.7±1.0±0.4)×10[superscript -6], and A[subscript ch]=(-9.0[subscript -9.8][superscript +10.4]±1.4)×10[superscript -2]. The first error quoted is statistical and the second systematic. |
| first_indexed | 2024-09-23T10:27:40Z |
| format | Article |
| id | mit-1721.1/55356 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T10:27:40Z |
| publishDate | 2010 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/553562022-09-27T09:37:11Z Branching fractions and CP-violating asymmetries in radiative B decays to eta K gamma Branching fractions and CP-violating asymmetries in radiative B decays to ηKγ Zhao, M. Yamamoto, R. K. Taylor, Frank E. Spitznagel, M. Sciolla, Gabriella Dujmic, Denis Cowan, Ray Franklin Koeneke, Karsten 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 Koeneke, Karsten Fisher, Peter H. We present measurements of the CP-violation parameters S and C for the radiative decay B0-->etaKS0gamma; for B-->etaKgamma we also measure the branching fractions and for B+-->etaK+gamma the time-integrated charge asymmetry Ach. The data, collected with the BABAR detector at the Stanford Linear Accelerator Center, represent 465×106 BB[over-bar] pairs produced in e+e- annihilation. The results are S=-0.18[subscript -0.46][superscript +0.49]±0.12, C=-0.32[superscript -0.39][superscript +0.40]±0.07, B(B0-->etaK0gamma)=(7.1[subscript -2.0][superscript +2.1]±0.4)×10[superscript -6], B(B+-->etaK+gamma)=(7.7±1.0±0.4)×10[superscript -6], and A[subscript ch]=(-9.0[subscript -9.8][superscript +10.4]±1.4)×10[superscript -2]. The first error quoted is statistical and the second systematic. 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 (France) Natural Sciences and Engineering Research Council of Canada National Science Foundation United States Department of Energy 2010-05-28T20:20:37Z 2010-05-28T20:20:37Z 2009-01 2008-05 Article http://purl.org/eprint/type/JournalArticle 1089-4918 http://hdl.handle.net/1721.1/55356 BABAR Collaboration et al. “Branching fractions and CP-violating asymmetries in radiative B decays to eta K gamma.” Physical Review D 79.1 (2009): 011102. © 2009 The 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/PhysRevD.79.011102 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. Taylor, Frank E. Spitznagel, M. Sciolla, Gabriella Dujmic, Denis Cowan, Ray Franklin Koeneke, Karsten Fisher, Peter H. Branching fractions and CP-violating asymmetries in radiative B decays to eta K gamma |
| title | Branching fractions and CP-violating asymmetries in radiative B decays to eta K gamma |
| title_full | Branching fractions and CP-violating asymmetries in radiative B decays to eta K gamma |
| title_fullStr | Branching fractions and CP-violating asymmetries in radiative B decays to eta K gamma |
| title_full_unstemmed | Branching fractions and CP-violating asymmetries in radiative B decays to eta K gamma |
| title_short | Branching fractions and CP-violating asymmetries in radiative B decays to eta K gamma |
| title_sort | branching fractions and cp violating asymmetries in radiative b decays to eta k gamma |
| url | http://hdl.handle.net/1721.1/55356 https://orcid.org/0000-0002-7586-7253 https://orcid.org/0000-0002-8667-5660 |
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