Improved limits on B[superscript 0] decays to invisible (+γ) final states
We establish improved upper limits on branching fractions for B[superscript 0] decays to final states where the decay products are purely invisible (i.e., no observable final state particles) and for final states where the only visible product is a photon. Within the Standard Model, these decays hav...
| Main Authors: | , , |
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| Format: | Article |
| Language: | en_US |
| Published: |
American Physical Society
2013
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| Online Access: | http://hdl.handle.net/1721.1/76340 |
| _version_ | 1811074505076899840 |
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| author | Dujmic, Denis Sciolla, Gabriella Cowan, Ray F |
| author2 | Massachusetts Institute of Technology. Laboratory for Nuclear Science |
| author_facet | Massachusetts Institute of Technology. Laboratory for Nuclear Science Dujmic, Denis Sciolla, Gabriella Cowan, Ray F |
| author_sort | Dujmic, Denis |
| collection | MIT |
| description | We establish improved upper limits on branching fractions for B[superscript 0] decays to final states where the decay products are purely invisible (i.e., no observable final state particles) and for final states where the only visible product is a photon. Within the Standard Model, these decays have branching fractions that are below the current experimental sensitivity, but various models of physics beyond the Standard Model predict significant contributions for these channels. Using 471×10[superscript 6] BB̅ pairs collected at the Υ(4S) resonance by the BABAR experiment at the PEP-II e[superscript +]e[superscript -] storage ring at the SLAC National Accelerator Laboratory, we establish upper limits at the 90% confidence level of 2.4×10-5 for the branching fraction of B[superscript 0]→invisible and 1.7×10[superscript -5] for the branching fraction of B[superscript 0]→invisible+γ. |
| first_indexed | 2024-09-23T09:50:30Z |
| format | Article |
| id | mit-1721.1/76340 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T09:50:30Z |
| publishDate | 2013 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/763402023-02-26T09:59:05Z Improved limits on B[superscript 0] decays to invisible (+γ) final states Dujmic, Denis Sciolla, Gabriella Cowan, Ray F Massachusetts Institute of Technology. Laboratory for Nuclear Science Cowan, Ray Franklin Dujmic, Denis Sciolla, Gabriella We establish improved upper limits on branching fractions for B[superscript 0] decays to final states where the decay products are purely invisible (i.e., no observable final state particles) and for final states where the only visible product is a photon. Within the Standard Model, these decays have branching fractions that are below the current experimental sensitivity, but various models of physics beyond the Standard Model predict significant contributions for these channels. Using 471×10[superscript 6] BB̅ pairs collected at the Υ(4S) resonance by the BABAR experiment at the PEP-II e[superscript +]e[superscript -] storage ring at the SLAC National Accelerator Laboratory, we establish upper limits at the 90% confidence level of 2.4×10-5 for the branching fraction of B[superscript 0]→invisible and 1.7×10[superscript -5] for the branching fraction of B[superscript 0]→invisible+γ. 2013-01-23T15:18:30Z 2013-01-23T15:18:30Z 2012-09 2012-06 Article http://purl.org/eprint/type/JournalArticle 1550-7998 1089-4918 http://hdl.handle.net/1721.1/76340 Lees, J. et al. “Improved limits on B[superscript 0] decays to invisible (+γ) final states.” Physical Review D 86.5 (2012). © 2012 American Physical Society en_US http://dx.doi.org/10.1103/PhysRevD.86.051105 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 Sciolla, Gabriella Cowan, Ray F Improved limits on B[superscript 0] decays to invisible (+γ) final states |
| title | Improved limits on B[superscript 0] decays to invisible (+γ) final states |
| title_full | Improved limits on B[superscript 0] decays to invisible (+γ) final states |
| title_fullStr | Improved limits on B[superscript 0] decays to invisible (+γ) final states |
| title_full_unstemmed | Improved limits on B[superscript 0] decays to invisible (+γ) final states |
| title_short | Improved limits on B[superscript 0] decays to invisible (+γ) final states |
| title_sort | improved limits on b superscript 0 decays to invisible γ final states |
| url | http://hdl.handle.net/1721.1/76340 |
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