Luminosity determination using Z boson production at the CMS experiment

Belyaev, A.V.; Boos, E.; Dubinin, M.; Dudko, L.; Ershov, A.A.; Gribushin, A.; Kaminskiy, A.; Klyukhin, V.; Kodolova, O.; Obraztsov, S.; Petrushanko, S.V.; Savrin, V.; Snigirev, A.; CMS, C.

Статья опубликована в высокорейтинговом журнале

Информация о цитировании статьи получена из Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 15 февраля 2024 г.

Авторы: Belyaev A.V., Boos E., Dubinin M., Dudko L., Ershov A.A., Gribushin A., Kaminskiy A., Klyukhin V., Kodolova O., Obraztsov S., Petrushanko S.V., Savrin V., Snigirev A., CMS Collaboration
Журнал: European Physical Journal C
Том: 84
Год издания: 2024
Издательство: Springer Verlag
Местоположение издательства: Germany
Первая страница: 26
DOI: 10.1140/epjc/s10052-023-12268-2
Аннотация: The measurement of Z boson production is presented as a method to determine the integrated luminosity of CMS data sets. The analysis uses proton–proton collision data, recorded by the CMS experiment at the CERN LHC in 2017 at a center-of-mass energy of 13 TeV. Events with Z bosons decaying into a pair of muons are selected. The total number of Z bosons produced in a fiducial volume is determined, together with the identification efficiencies and correlations from the same data set, in small intervals of 20 pb−1 of integrated luminosity, thus facilitating the efficiency and rate measurement as a function of time and instantaneous luminosity. Using the ratio of the efficiency-corrected numbers of Z bosons, the precisely measured integrated luminosity of one data set is used to determine the luminosity of another. For the first time, a full quantitative uncertainty analysis of the use of Z bosons for the integrated luminosity measurement is performed. The uncertainty in the extrapolation between two data sets, recorded in 2017 at low and high instantaneous luminosity, is less than 0.5%. We show that the Z boson rate measurement constitutes a precise method, complementary to traditional methods, with the potential to improve the measurement of the integrated luminosity.
Добавил в систему: Клюхин Вячеслав Иванович

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Luminosity determination using Z boson production at the CMS experimentстатья Исследовательская статья

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