Publication: Search for the B -> Y(4260)K, Y(4260) -> J/psi pi(+)pi(-) decays
Дата
2019
Авторы
Garg, R.
Bhardwaj, V.
Singh, J. B.
Adachi, I.
Mizuk, R.
Pakhlov, P.
Journal Title
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Volume Title
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Аннотация
We report the results of a search for the B -> Y(4260)K, Y(4260) -> J/psi pi(+)pi thorn p-decays. This study is based on a data sample corresponding to an integrated luminosity of 711 fb(-1), collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We investigate the J/psi pi(+)pi(-) thorn p-invariant mass distribution in the range 4.0 to 4.6 GeV/c(2) using both B+ -> J/psi pi(+)pi K--(+) and B-0 -> J/psi pi(+)pi K--(S)0 decays. We find excesses of events above the background levels, with significances of 2.1 and 0.9 standard deviations for charged and neutral B -> Y(4260)K decays, respectively, taking into account the systematic uncertainties. These correspond to upper limits on the product of branching fractions, B(B+ -> Y(4260)K+) x B(Y(4260) -> J/psi pi(+)pi(-)) < 1.4 x 10(-5) and B(B-0 -> Y(4260)K-0) x B(Y(4260) -> J/psi pi(+)pi(-)) < 1.7 x 10(-5) at the 90% confidence level.
Описание
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Цитирование
Search for the B -> Y(4260)K, Y(4260) -> J/psi pi(+)pi(-) decays / Garg, R [et al.] // Physical Review D. - 2019. - 99. - № 7. - 10.1103/PhysRevD.99.071102
URI
https://www.doi.org/10.1103/PhysRevD.99.071102
https://www.scopus.com/record/display.uri?eid=2-s2.0-85065197551&origin=resultslist
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https://openrepository.mephi.ru/handle/123456789/16916
https://www.scopus.com/record/display.uri?eid=2-s2.0-85065197551&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000464742700001
https://openrepository.mephi.ru/handle/123456789/16916