| _version_ |
1826199854113619968
|
| collection |
MIT
|
| description |
© 2019 CERN. The first amplitude analysis of the B±→π±K+K- decay is reported based on a data sample corresponding to an integrated luminosity of 3.0 fb-1 of pp collisions recorded in 2011 and 2012 with the LHCb detector. The data are found to be best described by a coherent sum of five resonant structures plus a nonresonant component and a contribution from ππ↔KK S-wave rescattering. The dominant contributions in the π± K and K+ K- systems are the nonresonant and the B±→ρ(1450)0π± amplitudes, respectively, with fit fractions around 30%. For the rescattering contribution, a sizable fit fraction is observed. This component has the largest CP asymmetry reported to date for a single amplitude of (-66±4±2)%, where the first uncertainty is statistical and the second systematic. No significant CP violation is observed in the other contributions.
|
| first_indexed |
2024-09-23T11:26:50Z
|
| format |
Article
|
| id |
mit-1721.1/134123
|
| institution |
Massachusetts Institute of Technology
|
| language |
English
|
| last_indexed |
2024-09-23T11:26:50Z
|
| publishDate |
2021
|
| publisher |
American Physical Society (APS)
|
| record_format |
dspace
|
| spelling |
mit-1721.1/1341232022-04-01T17:20:48Z Amplitude Analysis of B ± → π ± K + K − Decays © 2019 CERN. The first amplitude analysis of the B±→π±K+K- decay is reported based on a data sample corresponding to an integrated luminosity of 3.0 fb-1 of pp collisions recorded in 2011 and 2012 with the LHCb detector. The data are found to be best described by a coherent sum of five resonant structures plus a nonresonant component and a contribution from ππ↔KK S-wave rescattering. The dominant contributions in the π± K and K+ K- systems are the nonresonant and the B±→ρ(1450)0π± amplitudes, respectively, with fit fractions around 30%. For the rescattering contribution, a sizable fit fraction is observed. This component has the largest CP asymmetry reported to date for a single amplitude of (-66±4±2)%, where the first uncertainty is statistical and the second systematic. No significant CP violation is observed in the other contributions. 2021-10-27T19:58:13Z 2021-10-27T19:58:13Z 2019 2021-03-29T16:30:34Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/134123 en 10.1103/PHYSREVLETT.123.231802 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 |
Amplitude Analysis of B ± → π ± K + K − Decays
|
| title |
Amplitude Analysis of B ± → π ± K + K − Decays
|
| title_full |
Amplitude Analysis of B ± → π ± K + K − Decays
|
| title_fullStr |
Amplitude Analysis of B ± → π ± K + K − Decays
|
| title_full_unstemmed |
Amplitude Analysis of B ± → π ± K + K − Decays
|
| title_short |
Amplitude Analysis of B ± → π ± K + K − Decays
|
| title_sort |
amplitude analysis of b π k k decays
|
| url |
https://hdl.handle.net/1721.1/134123
|