Observation of B0s→¯D*0ϕ and search for B0→¯D0ϕ decays
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Информация об архиве | Просмотр оригинала| Поле | Значение | |
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Observation of B0s→¯D*0ϕ and search for B0→¯D0ϕ decays
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| Автор |
Aaij, Roel
Panshin, Gennady Leonidovich Strokov, Sergey Aleksandrovich Vagner, Aleksandr Rudolfovich |
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| Описание |
The first observation of the B0s→¯D*0ϕ decay is reported, with a significance of more than seven standard deviations, from an analysis of pp collision data corresponding to an integrated luminosity of 3 fb−1, collected with the LHCb detector at center-of-mass energies of 7 and 8 TeV. The branching fraction is measured relative to that of the topologically similar decay B0→¯D0π+π− and is found to be B(B0s→¯D*0ϕ)=(3.7±0.5±0.3±0.2)×10−5, where the first uncertainty is statistical, the second systematic, and the third from the branching fraction of the B0→¯D0π+π− decay. The fraction of longitudinal polarization in this decay is measured to be fL=(73±15±4)%. The most precise determination of the branching fraction for the B0s→¯D0ϕ decay is also obtained, B(B0s→¯D0ϕ)=(3.0±0.3±0.2±0.2)×10−5. An upper limit, B(B0→¯D0ϕ)<2.0 (2.3)×10−6 at 90% (95%) confidence level is set. A constraint on the ω−ϕ mixing angle δ is set at |δ|<5.2° (5.5°) at 90% (95%) confidence level.
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| Дата |
2020-01-29T10:04:21Z
2020-01-29T10:04:21Z 2018 |
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| Тип |
Article
Published version (info:eu-repo/semantics/publishedVersion) Journal article (info:eu-repo/semantics/article) |
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| Идентификатор |
Observation of B0s→¯D*0ϕ and search for B0→¯D0ϕ decays / R. Aaij [et al.] // Physical Review D. — 2018. — Vol. 98, iss. 7. — [071103, 10 p.].
http://earchive.tpu.ru/handle/11683/57724 10.1103/PhysRevD.98.071103 |
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| Язык |
en
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| Права |
Open access (info:eu-repo/semantics/openAccess)
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application/pdf
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| Издатель |
Томский политехнический университет
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| Источник |
Physical Review D
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