Analysis of Neutral B-Meson Decays into Two Muons; Physical Review Letters; Vol. 128, iss. 4
| Источник: | Physical Review Letters Vol. 128, iss. 4.— 2022.— [041801, 13 p.] |
|---|---|
| Корпоративные авторы: | Национальный исследовательский Томский политехнический университет Инженерная школа информационных технологий и робототехники Отделение автоматизации и робототехники (ОАР), Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов |
| Другие авторы: | Aaij R. Roel, Beteta C. A. Carlos Abellan, Ackernley T., Kharisova A. E. Anastasiya Evgenjevna, Panshin G. L. Gennady Leonidovich, Vagner A. R. Aleksandr Rudolfovich |
| Примечания: | Title screen Branching fraction and effective lifetime measurements of the rare decay B0s→μ+μ− and searches for the decays B0→μ+μ− and B0s→μ+μ−γ are reported using proton-proton collision data collected with the LHCb detector at center-of-mass energies of 7, 8, and 13 TeV, corresponding to a luminosity of 9 fb−1. The branching fraction B(B0s→μ+μ−)=(3.09+0.46+0.15−0.43−0.11)×10−9 and the effective lifetime τ(B0s→μ+μ−)=2.07±0.29±0.03 ps are measured, where the first uncertainty is statistical and the second systematic. No significant signal for B0→μ+μ− and B0s→μ+μ−γ decays is found and upper limits B(B0→μ+μ−)<2.6×10−10 and B(B0s→μ+μ−γ)<2.0×10−9 at the 95% C.L. are determined, where the latter is limited to the range mμμ>4.9 GeV/c2. The results are in agreement with the standard model expectations. |
| Язык: | английский |
| Опубликовано: |
2022
|
| Предметы: | |
| Online-ссылка: | http://earchive.tpu.ru/handle/11683/132534 https://doi.org/10.1103/PhysRevLett.128.041801 |
| Формат: | Электронный ресурс Статья |
| Запись в KOHA: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=669595 |
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