Publication:
Measurements of isospin asymmetry and difference of direct CP asymmetries in inclusive B -> X-s gamma decays

Файлы
PhysRevD.99.032012.pdf(417.93 KB)
Дата
2019
Авторы
Watanuki, S.
Ishikawa, A.
Adachi, I.
Aihara, H.
Mizuk, R.
Pakhlov, P.
Zhukova, V.
Journal Title
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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
We report measurements of isospin asymmetry Delta(0-) and difference of direct CP asymmetries Delta A(CP) between charged and neutral B -> X-s gamma decays. This analysis is based on the data sample containing 772 x 10(6)B (B) over bar pairs that was collected with the Belle detector at the KEKB energy-asymmetric ethornecollider. Using a sum-of-exclusive technique with invariant X-s mass up to 2.8 GeV= c2, we obtain Delta(0-) = [0.48 +/- 1.49(stat) +/- 0.97(syst) +/- 1.15(f(+-)/f(00))]% and Delta A(CP) = [+3.69 +/- 2.65(stat) +/- 0.76(syst)]%, where the last uncertainty for.0-is due to the uncertainty on the production ratio of B+B- to B-0(B) over bar (0) in.o4Sthorn decays. The measured value of Delta(0-) is consistent with zero, allowing us to constrain the resolved photon contribution in the B -> X-s gamma, and improve the branching fraction prediction. The result for Delta A(CP) is consistent with the prediction of the SM. We also measure the direct CP asymmetries for charged and neutral B -> X-s gamma decays. All the measurements are the most precise to date.
Описание
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Цитирование
Measurements of isospin asymmetry and difference of direct CP asymmetries in inclusive B -> X-s gamma decays / Watanuki, S [et al.] // Physical Review D. - 2019. - 99. - № 3. - 10.1103/PhysRevD.99.032012
URI
https://www.doi.org/10.1103/PhysRevD.99.032012
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85062599280&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000459208700005
 https://openrepository.mephi.ru/handle/123456789/16588
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