Publication:
Observation of B+ →p Λ K+K- and B+ → p Λk+K+ OBSERVATION of ... P.-C. LU et al.

Файлы
PhysRevD.99.032003.pdf(1008.72 KB)
Дата
2019
Авторы
Lu, P. -C.
Wang, M. -Z.
Chang, P.
Adachi, I.
Chistov, R.
Mizuk, R.
Pakhlov, P.
Zhukova, V.
Journal Title
Journal ISSN
Volume Title
Издатель
Научные группы
Логотип проекта
Научная группа
Belle Collaboration
Организационные подразделения
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Организационная единица
Институт ядерной физики и технологий
Цель ИЯФиТ и стратегия развития - создание и развитие научно-образовательного центра мирового уровня в области ядерной физики и технологий, радиационного материаловедения, физики элементарных частиц, астрофизики и космофизики.
Выпуск журнала
Аннотация
© 2019 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the https://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP 3 . We report the study of B+→pΛ̄K+K- and B+→p̄ΛK+K+ decays using a 772×106 BB̄ pair data sample recorded on the Ï (4S) resonance with the Belle detector at KEKB. The following branching fractions are measured: B(B+→pΛ̄K+K-)=(4.10-0.43+0.45±0.50)×10-6, B(B+→p̄ΛK+K+)=(3.70-0.37+0.39±0.44)×10-6, B(ηc→pΛ̄K-+c.c.)=(2.83-0.34+0.36±0.35)×10-3 and B(B+→pΛ̄φ)=(7.95±2.09±0.77)×10-7, where c.c. denotes the corresponding charge-conjugation process. The intermediate resonance decays are excluded in the four-body decay measurements. We also find evidence for B(ηc→Λ(1520)Λ̄+c.c.)=(3.48±1.48±0.46)×10-3 and B(B+→Λ(1520)Λ̄K+)=(2.23±0.63±0.25)×10-6. No significant signals are found for J/ψ→Λ(1520)Λ̄+c.c. and B+→Λ̄(1520)ΛK+; we set the 90% confidence level upper limits on their decay branching fractions as <1.80×10-3 and <2.08×10-6, respectively.
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Цитирование
Observation of B+ →p Λ K+K- and B+ → p Λk+K+ OBSERVATION of ... P.-C. LU et al. / Lu, P.-C. [et al.] // Physical Review D. - 2019. - 99. - № 3. - 10.1103/PhysRevD.99.032003
URI
https://www.doi.org/10.1103/PhysRevD.99.032003
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85062606141&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000458137500001
 https://openrepository.mephi.ru/handle/123456789/16678
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