[MRO] First Observation of CP Violation in the Decays of B[superscript 0 over s] Mesons
Using pp collision data corresponding to an integrated luminosity of 1.0 fb[superscript -1] and collected by LHCb in 2011 at a center-of-mass energy of 7 TeV, we report the measurement of direct CP violation in Bs0→K[superscript -]π[superscript +] decays, A[subscript CP](B[superscript 0 over s]→K[s...
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2013
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| Online Access: | http://hdl.handle.net/1721.1/79909 https://orcid.org/0000-0001-8285-3346 |
| _version_ | 1826197295961473024 |
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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 | Using pp collision data corresponding to an integrated luminosity of 1.0 fb[superscript -1] and collected by LHCb in 2011 at a center-of-mass energy of 7 TeV, we report the measurement of direct CP violation in Bs0→K[superscript -]π[superscript +] decays, A[subscript CP](B[superscript 0 over s]→K[superscript -]π[superscript +])=0.27±0.04 (stat)±0.01 (syst), with significance exceeding 5 standard deviations. This is the first observation of CP violation in the decays of B[superscript 0 over s] mesons. Furthermore, we provide an improved determination of direct CP violation in B[superscript 0]→K[superscript +]π[superscript -] decays, A[subscript CP](B[superscript 0]→K[superscript +]π[superscript -])=-0.080±0.007 (stat)±0.003 (syst), which is the most precise measurement of this quantity to date. |
| first_indexed | 2024-09-23T10:45:30Z |
| format | Article |
| id | mit-1721.1/79909 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T10:45:30Z |
| publishDate | 2013 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/799092022-09-30T22:47:25Z [MRO] First Observation of CP Violation in the Decays of B[superscript 0 over s] Mesons Williams, Michael Massachusetts Institute of Technology. Department of Physics Williams, Michael Using pp collision data corresponding to an integrated luminosity of 1.0 fb[superscript -1] and collected by LHCb in 2011 at a center-of-mass energy of 7 TeV, we report the measurement of direct CP violation in Bs0→K[superscript -]π[superscript +] decays, A[subscript CP](B[superscript 0 over s]→K[superscript -]π[superscript +])=0.27±0.04 (stat)±0.01 (syst), with significance exceeding 5 standard deviations. This is the first observation of CP violation in the decays of B[superscript 0 over s] mesons. Furthermore, we provide an improved determination of direct CP violation in B[superscript 0]→K[superscript +]π[superscript -] decays, A[subscript CP](B[superscript 0]→K[superscript +]π[superscript -])=-0.080±0.007 (stat)±0.003 (syst), which is the most precise measurement of this quantity to date. National Science Foundation (U.S.) 2013-08-21T19:32:10Z 2013-08-21T19:32:10Z 2013-05 2013-04 Article http://purl.org/eprint/type/JournalArticle 0031-9007 1079-7114 http://hdl.handle.net/1721.1/79909 Aaij, R., C. Abellan Beteta, B. Adeva, M. Adinolfi, C. Adrover, A. Affolder, Z. Ajaltouni, et al. “First Observation of CP Violation in the Decays of B[superscript 0 over s] Mesons.” Physical Review Letters 110, no. 22 (May 2013). © 2013 CERN https://orcid.org/0000-0001-8285-3346 en_US http://dx.doi.org/10.1103/PhysRevLett.110.221601 Physical Review Letters Creative Commons Attribution 3.0 http://creativecommons.org/licenses/by/3.0/ application/pdf American Physical Society APS |
| spellingShingle | Williams, Michael [MRO] First Observation of CP Violation in the Decays of B[superscript 0 over s] Mesons |
| title | [MRO] First Observation of CP Violation in the Decays of B[superscript 0 over s] Mesons |
| title_full | [MRO] First Observation of CP Violation in the Decays of B[superscript 0 over s] Mesons |
| title_fullStr | [MRO] First Observation of CP Violation in the Decays of B[superscript 0 over s] Mesons |
| title_full_unstemmed | [MRO] First Observation of CP Violation in the Decays of B[superscript 0 over s] Mesons |
| title_short | [MRO] First Observation of CP Violation in the Decays of B[superscript 0 over s] Mesons |
| title_sort | mro first observation of cp violation in the decays of b superscript 0 over s mesons |
| url | http://hdl.handle.net/1721.1/79909 https://orcid.org/0000-0001-8285-3346 |
| work_keys_str_mv | AT williamsmichael mrofirstobservationofcpviolationinthedecaysofbsuperscript0oversmesons |