Observation of the decay Λ b 0 → ψ(2S)pπ−
Электронный архив ТПУ
Информация об архиве | Просмотр оригинала| Поле | Значение | |
| Заглавие |
Observation of the decay Λ b 0 → ψ(2S)pπ−
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| Автор |
Aaij, Roel
Adeva, Bernardo Adinolfi, Marco Aidala, Christine Panshin, Gennady Leonidovich Strokov, Sergey Aleksandrovich Vagner, Aleksandr Rudolfovich |
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| Тематика |
физика
адронное взаимодействие |
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| Описание |
The Cabibbo-suppressed decay Λ b 0 → ψ(2S)pπ− is observed for the first time using a data sample collected by the LHCb experiment in proton-proton collisions corresponding to 1.0, 2.0 and 1.9 fb−1 of integrated luminosity at centre-of-mass energies of 7, 8 and 13 TeV, respectively. The ψ(2S) mesons are reconstructed in the μ+μ− final state. The branching fraction with respect to that of the Λ b 0 → ψ(2S)pK− decay mode is measured to beB(Λ0b→ψ(2S)pπ−)B(Λ0b→ψ(2S)pK−)=(11.4±1.3±0.2)%,B(Λb0→ψ(2S)pπ−)B(Λb0→ψ(2S)pK−)=(11.4±1.3±0.2)%,where the first uncertainty is statistical and the second is systematic. The ψ(2S)p and ψ(2S)π−mass spectra are investigated and no evidence for exotic resonances is found.
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| Дата |
2020-01-29T10:04:18Z
2020-01-29T10:04:18Z 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 the decay Λ b 0 → ψ(2S)pπ− / R. Aaij [et al.] // Journal of High Energy Physics. — 2018. — № 8. — [131, 19 p.].
http://earchive.tpu.ru/handle/11683/57710 10.1007/JHEP08(2018)131 |
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| Язык |
en
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| Права |
Open access (info:eu-repo/semantics/openAccess)
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| Формат |
application/pdf
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| Издатель |
Томский политехнический университет
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| Источник |
Journal of High Energy Physics
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