Publication: Study of B -> p<(p)over bar>pi pi
Дата
2020
Авторы
Chu, K.
Wang, M. Z.
Adachi, I.
Aihara, H.
Pakhlov, P.
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Аннотация
Using a data sample of 772 x 10(6) B (B) over bar pairs collected on the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric energy e(+)e(-) collider, we report the observation of B-0 -> p (p) over bar pi(+)pi(-) and the first observation of B+ -> p (p) over bar pi(+)pi(0). We measure a decay branching fraction of (0.83 +/- 0.17 +/- 0.17) x 10(-6) in B-0 -> p (p) over bar pi(+)pi(-) for M pi+pi- < 1.22 GeV/c(2) with a significance of 5.5 standard deviations. The contribution from B-0 -> p (p) over barK(0) is excluded. We measure a decay branching fraction of (4.58 +/- 1.17 +/- 0.67) x 10(-6) for B+ -> p (p) over bar pi(+)pi(0 )with M pi+pi 0 < 1.3 GeV/c(2) with a significance of 5.4 standard deviations. We study the difference of the M-p((p) over bar) distributions in B-0 -> p (p) over bar pi(+)pi(-) and B-0 -> p (p) over bar pi(+)pi(0).
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Цитирование
Study of B -> p<(p)over bar>pi pi / Chu, K [et al.] // Physical Review D. - 2020. - 101. - № 5. - 10.1103/PhysRevD.101.052012
URI
https://www.doi.org/10.1103/PhysRevD.101.052012
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https://www.scopus.com/record/display.uri?eid=2-s2.0-85083439185&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000522162000004
https://openrepository.mephi.ru/handle/123456789/20533