Search for the Lepton-Flavor-Violating Decays B[0 over s] → e[superscript ±]μ[superscript ∓] and B[superscript 0] → e[superscript ±]μ[superscript ∓]
A search for the lepton-flavor-violating decays B[0 over s] → e[superscript ±]μ[superscript ∓] and B[superscript 0] → e[superscript ±]μ[superscript ∓] is performed with a data sample, corresponding to an integrated luminosity of 1.0 fb[superscript −1] of pp collisions at √s = 7 TeV, collected by t...
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2014
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| Online Access: | http://hdl.handle.net/1721.1/84927 https://orcid.org/0000-0001-8285-3346 |
| _version_ | 1826192301274169344 |
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| author | Williams, Michael |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Williams, Michael |
| author_sort | Williams, Michael |
| collection | MIT |
| description | A search for the lepton-flavor-violating decays B[0 over s] → e[superscript ±]μ[superscript ∓] and B[superscript 0] → e[superscript ±]μ[superscript ∓] is performed with a data sample, corresponding to an integrated luminosity of 1.0 fb[superscript −1] of pp collisions at √s = 7 TeV, collected by the LHCb experiment. The observed number of B[0 over s] → e[superscript ±]μ[superscript ∓] and B[superscript 0] → e[superscript ±]μ[superscript ∓] candidates is consistent with background expectations. Upper limits on the branching fractions of both decays are determined to be B(B[0 over s]→ e[superscript ±]μ[superscript ∓]) <1.1(1.4) × 10[superscript −8] and B(B[superscript 0] → e[superscript ±]μ[superscript ∓]) <2.8(3.7) × 10[superscript −9] at 90% (95%) confidence level (C.L.). These limits are a factor of 20 lower than those set by previous experiments. Lower bounds on the Pati-Salam leptoquark masses are also calculated, M[subscript LQ](B[0 over s] → e[superscript ±]μ[superscript ∓]) > 101 TeV/c[superscript 2] and M[subscript LQ](B[superscript 0] → e[superscript ±]μ[superscript ∓]) > 126 TeV/c[superscript 2] at 95% C.L., and are a factor of 2 higher than the previous bounds. |
| first_indexed | 2024-09-23T09:09:06Z |
| format | Article |
| id | mit-1721.1/84927 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T09:09:06Z |
| publishDate | 2014 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/849272022-09-30T13:49:01Z Search for the Lepton-Flavor-Violating Decays B[0 over s] → e[superscript ±]μ[superscript ∓] and B[superscript 0] → e[superscript ±]μ[superscript ∓] Williams, Michael Massachusetts Institute of Technology. Department of Physics Williams, Michael A search for the lepton-flavor-violating decays B[0 over s] → e[superscript ±]μ[superscript ∓] and B[superscript 0] → e[superscript ±]μ[superscript ∓] is performed with a data sample, corresponding to an integrated luminosity of 1.0 fb[superscript −1] of pp collisions at √s = 7 TeV, collected by the LHCb experiment. The observed number of B[0 over s] → e[superscript ±]μ[superscript ∓] and B[superscript 0] → e[superscript ±]μ[superscript ∓] candidates is consistent with background expectations. Upper limits on the branching fractions of both decays are determined to be B(B[0 over s]→ e[superscript ±]μ[superscript ∓]) <1.1(1.4) × 10[superscript −8] and B(B[superscript 0] → e[superscript ±]μ[superscript ∓]) <2.8(3.7) × 10[superscript −9] at 90% (95%) confidence level (C.L.). These limits are a factor of 20 lower than those set by previous experiments. Lower bounds on the Pati-Salam leptoquark masses are also calculated, M[subscript LQ](B[0 over s] → e[superscript ±]μ[superscript ∓]) > 101 TeV/c[superscript 2] and M[subscript LQ](B[superscript 0] → e[superscript ±]μ[superscript ∓]) > 126 TeV/c[superscript 2] at 95% C.L., and are a factor of 2 higher than the previous bounds. National Science Foundation (U.S.) 2014-02-10T18:29:42Z 2014-02-10T18:29:42Z 2013-09 2013-07 Article http://purl.org/eprint/type/JournalArticle 0031-9007 1079-7114 http://hdl.handle.net/1721.1/84927 Aaij, R., B. Adeva, M. Adinolfi, C. Adrover, A. Affolder, Z. Ajaltouni, J. Albrecht, et al. “Search for the Lepton-Flavor-Violating Decays B[0 over s] → e[superscript ±]μ[superscript ∓] and B[superscript 0] → e[superscript ±]μ[superscript ∓].” Physical Review Letters 111, no. 14 (September 2013). © 2013 CERN, for the LHCb Collaboration https://orcid.org/0000-0001-8285-3346 en_US http://dx.doi.org/10.1103/PhysRevLett.111.141801 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 American Physical Society |
| spellingShingle | Williams, Michael Search for the Lepton-Flavor-Violating Decays B[0 over s] → e[superscript ±]μ[superscript ∓] and B[superscript 0] → e[superscript ±]μ[superscript ∓] |
| title | Search for the Lepton-Flavor-Violating Decays B[0 over s] → e[superscript ±]μ[superscript ∓] and B[superscript 0] → e[superscript ±]μ[superscript ∓] |
| title_full | Search for the Lepton-Flavor-Violating Decays B[0 over s] → e[superscript ±]μ[superscript ∓] and B[superscript 0] → e[superscript ±]μ[superscript ∓] |
| title_fullStr | Search for the Lepton-Flavor-Violating Decays B[0 over s] → e[superscript ±]μ[superscript ∓] and B[superscript 0] → e[superscript ±]μ[superscript ∓] |
| title_full_unstemmed | Search for the Lepton-Flavor-Violating Decays B[0 over s] → e[superscript ±]μ[superscript ∓] and B[superscript 0] → e[superscript ±]μ[superscript ∓] |
| title_short | Search for the Lepton-Flavor-Violating Decays B[0 over s] → e[superscript ±]μ[superscript ∓] and B[superscript 0] → e[superscript ±]μ[superscript ∓] |
| title_sort | search for the lepton flavor violating decays b 0 over s e superscript μ superscript ∓ and b superscript 0 e superscript μ superscript ∓ |
| url | http://hdl.handle.net/1721.1/84927 https://orcid.org/0000-0001-8285-3346 |
| work_keys_str_mv | AT williamsmichael searchfortheleptonflavorviolatingdecaysb0oversesuperscriptmsuperscriptandbsuperscript0esuperscriptmsuperscript |