Measurement of the B0s→μ+μ− branching fraction and effective lifetime and search for B0→μ+μ−decays.
<p>A search for the rare decays B0s→μ+μ− and B0→μ+μ− is performed at the LHCb experiment using data collected in pp collisions corresponding to a total integrated luminosity of 4.4 fb−1. An excess of B0s→μ+μ− decays is observed with a significance of 7.8 standard deviations, representing the...
| Autori principali: | , , , , , , , , , , , , , , , , , , |
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| Natura: | Journal article |
| Lingua: | English |
| Pubblicazione: |
American Physical Society
2017
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| _version_ | 1826293717616558080 |
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| author | Aaij, R Adeva, B Adinolfi, M Evans, T Gandini, P Gruberg Cazon, B Hadavizadeh, T Harnew, N Hill, D Jalocha, P John, M Jurik, N Malde, S Nandi, A Rollings, A Topp-Joergensen, S Veneziano, G Wilkinson, G LHCb Collaboration (756 Others) |
| author_facet | Aaij, R Adeva, B Adinolfi, M Evans, T Gandini, P Gruberg Cazon, B Hadavizadeh, T Harnew, N Hill, D Jalocha, P John, M Jurik, N Malde, S Nandi, A Rollings, A Topp-Joergensen, S Veneziano, G Wilkinson, G LHCb Collaboration (756 Others) |
| author_sort | Aaij, R |
| collection | OXFORD |
| description | <p>A search for the rare decays B0s→μ+μ− and B0→μ+μ− is performed at the LHCb experiment using data collected in pp collisions corresponding to a total integrated luminosity of 4.4 fb−1. An excess of B0s→μ+μ− decays is observed with a significance of 7.8 standard deviations, representing the first observation of this decay in a single experiment. The branching fraction is measured to be B(B0s→μ+μ−)=(3.0±0.6+0.3−0.2)×10^−9, where the first uncertainty is statistical and the second systematic. The first measurement of the B0s→μ+μ− effective lifetime, τ(B0s→μ+μ−)=2.04±0.44±0.05 ps, is reported. No significant excess of B0→μ+μ− decays is found, and a 95% confidence level upper limit, B(B0→μ+μ−)<3.4×10^−10, is determined. All results are in agreement with the standard model expectations.</p> |
| first_indexed | 2024-03-07T03:34:28Z |
| format | Journal article |
| id | oxford-uuid:bbd2eabc-d63b-4e54-a92d-7abf52b3a23b |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T03:34:28Z |
| publishDate | 2017 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | oxford-uuid:bbd2eabc-d63b-4e54-a92d-7abf52b3a23b2022-03-27T05:20:02ZMeasurement of the B0s→μ+μ− branching fraction and effective lifetime and search for B0→μ+μ−decays.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:bbd2eabc-d63b-4e54-a92d-7abf52b3a23bEnglishSymplectic Elements at OxfordAmerican Physical Society2017Aaij, RAdeva, BAdinolfi, MEvans, TGandini, PGruberg Cazon, BHadavizadeh, THarnew, NHill, DJalocha, PJohn, MJurik, NMalde, SNandi, ARollings, ATopp-Joergensen, SVeneziano, GWilkinson, GLHCb Collaboration (756 Others)<p>A search for the rare decays B0s→μ+μ− and B0→μ+μ− is performed at the LHCb experiment using data collected in pp collisions corresponding to a total integrated luminosity of 4.4 fb−1. An excess of B0s→μ+μ− decays is observed with a significance of 7.8 standard deviations, representing the first observation of this decay in a single experiment. The branching fraction is measured to be B(B0s→μ+μ−)=(3.0±0.6+0.3−0.2)×10^−9, where the first uncertainty is statistical and the second systematic. The first measurement of the B0s→μ+μ− effective lifetime, τ(B0s→μ+μ−)=2.04±0.44±0.05 ps, is reported. No significant excess of B0→μ+μ− decays is found, and a 95% confidence level upper limit, B(B0→μ+μ−)<3.4×10^−10, is determined. All results are in agreement with the standard model expectations.</p> |
| spellingShingle | Aaij, R Adeva, B Adinolfi, M Evans, T Gandini, P Gruberg Cazon, B Hadavizadeh, T Harnew, N Hill, D Jalocha, P John, M Jurik, N Malde, S Nandi, A Rollings, A Topp-Joergensen, S Veneziano, G Wilkinson, G LHCb Collaboration (756 Others) Measurement of the B0s→μ+μ− branching fraction and effective lifetime and search for B0→μ+μ−decays. |
| title | Measurement of the B0s→μ+μ− branching fraction and effective lifetime and search for B0→μ+μ−decays. |
| title_full | Measurement of the B0s→μ+μ− branching fraction and effective lifetime and search for B0→μ+μ−decays. |
| title_fullStr | Measurement of the B0s→μ+μ− branching fraction and effective lifetime and search for B0→μ+μ−decays. |
| title_full_unstemmed | Measurement of the B0s→μ+μ− branching fraction and effective lifetime and search for B0→μ+μ−decays. |
| title_short | Measurement of the B0s→μ+μ− branching fraction and effective lifetime and search for B0→μ+μ−decays. |
| title_sort | measurement of the b0s μ μ branching fraction and effective lifetime and search for b0 μ μ decays |
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