Amplitude Analysis of B±→π±K+K− Decays; Physical Review Letters; Vol. 123, iss. 23
| Источник: | Physical Review Letters Vol. 123, iss. 23.— 2019.— [231802, 11 p.] |
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| Корпоративные авторы: | , |
| Другие авторы: | , , , , , |
| Примечания: | Title screen 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. |
| Язык: | английский |
| Опубликовано: |
2019
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| Предметы: | |
| Online-ссылка: | http://earchive.tpu.ru/handle/11683/64874 https://doi.org/10.1103/PhysRevLett.123.231802 |
| Формат: | MixedMaterials Электронный ресурс Статья |
| Запись в KOHA: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=663421 |