Measurement of C P Violation in the Decay B + → K + π 0
A measurement of CP violation in the decay B+→K+π0 is reported using data corresponding to an integrated luminosity of 5.4 fb-1 collected with the LHCb experiment at a center-of-mass energy of s=13 TeV. The CP asymmetry is measured to be 0.025±0.015±0.006±0.003, where the uncertainties are statistic...
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| Format: | Article |
| Language: | English |
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American Physical Society (APS)
2022
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| Online Access: | https://hdl.handle.net/1721.1/142452 |
| _version_ | 1811075013093097472 |
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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 measurement of CP violation in the decay B+→K+π0 is reported using data corresponding to an integrated luminosity of 5.4 fb-1 collected with the LHCb experiment at a center-of-mass energy of s=13 TeV. The CP asymmetry is measured to be 0.025±0.015±0.006±0.003, where the uncertainties are statistical, systematic, and due to an external input. This is the most precise measurement of this quantity. It confirms and significantly enhances the observed anomalous difference between the direct CP asymmetries of the B0→K+π- and B+→K+π0 decays, known as the Kπ puzzle. |
| first_indexed | 2024-09-23T09:58:57Z |
| format | Article |
| id | mit-1721.1/142452 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T09:58:57Z |
| publishDate | 2022 |
| publisher | American Physical Society (APS) |
| record_format | dspace |
| spelling | mit-1721.1/1424522023-04-14T18:33:25Z Measurement of C P Violation in the Decay B + → K + π 0 Williams, Michael Massachusetts Institute of Technology. Department of Physics A measurement of CP violation in the decay B+→K+π0 is reported using data corresponding to an integrated luminosity of 5.4 fb-1 collected with the LHCb experiment at a center-of-mass energy of s=13 TeV. The CP asymmetry is measured to be 0.025±0.015±0.006±0.003, where the uncertainties are statistical, systematic, and due to an external input. This is the most precise measurement of this quantity. It confirms and significantly enhances the observed anomalous difference between the direct CP asymmetries of the B0→K+π- and B+→K+π0 decays, known as the Kπ puzzle. 2022-05-10T18:55:35Z 2022-05-10T18:55:35Z 2021 2022-05-10T18:36:39Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/142452 Williams, Michael. 2021. "Measurement of C P Violation in the Decay B + → K + π 0." Physical Review Letters, 126 (9). en 10.1103/PHYSREVLETT.126.091802 Physical Review Letters Creative Commons Attribution 4.0 International License https://creativecommons.org/licenses/by/4.0 application/pdf American Physical Society (APS) APS |
| spellingShingle | Williams, Michael Measurement of C P Violation in the Decay B + → K + π 0 |
| title | Measurement of C P Violation in the Decay B + → K + π 0 |
| title_full | Measurement of C P Violation in the Decay B + → K + π 0 |
| title_fullStr | Measurement of C P Violation in the Decay B + → K + π 0 |
| title_full_unstemmed | Measurement of C P Violation in the Decay B + → K + π 0 |
| title_short | Measurement of C P Violation in the Decay B + → K + π 0 |
| title_sort | measurement of c p violation in the decay b k π 0 |
| url | https://hdl.handle.net/1721.1/142452 |
| work_keys_str_mv | AT williamsmichael measurementofcpviolationinthedecaybkp0 |