Publication:
Measurement of CKM matrix elements in single top quark t-channel production in proton-proton collisions at s=13 TeV

Файлы
1-s2.0-S0370269320304123-main.pdf(1.48 MB)
Дата
2020
Авторы
Sirunyan, A. M.
Tumasyan, A.
Adam, W.
Ambrogi, F.
Bychkova, O.
Chistov, R.
Danilov, M.
Polikarpov, S.
Tarkovskii, E.
Matveev, V.
Показать ещё 4
Journal Title
Journal ISSN
Volume Title
Издатель
Научные группы
Логотип проекта
Организационные подразделения
OrgUnit Logo
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
© 2020 The AuthorThe first direct, model-independent measurement is presented of the modulus of the Cabibbo–Kobayashi–Maskawa (CKM) matrix elements |η|Vtb, |η|Vtd, and |η|Vts, in final states enriched in single top quark t-channel events. The analysis uses proton-proton collision data from the LHC, collected during 2016 by the CMS experiment, at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb−1. Processes directly sensitive to these matrix elements are considered at both the production and decay vertices of the top quark. In the standard model hypothesis of CKM unitarity, a lower limit of |η|Vtb>0.970 is measured at the 95% confidence level. Several theories beyond the standard model are considered, and by releasing all constraints among the involved parameters, the values |η|Vtb=0.988±0.024, and |η|Vtd2+|η|Vts2=0.06±0.06, where the uncertainties include both statistical and systematic components, are measured.
Описание
Ключевые слова
Цитирование
Measurement of CKM matrix elements in single top quark t-channel production in proton-proton collisions at s=13 TeV / Sirunyan, A.M. [et al.] // Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. - 2020. - 808. - 10.1016/j.physletb.2020.135609
URI
https://www.doi.org/10.1016/j.physletb.2020.135609
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85088271548&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000571769700003
 https://openrepository.mephi.ru/handle/123456789/22063
Коллекции
Публикации