Luminosity determination using Z boson production at the CMS experiment
[ X ]
Tarih
2024
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Institute for Ionics
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
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. © 2024, The Author(s).
Açıklama
Anahtar Kelimeler
Bosons, Uncertainty Analysis, A-center, Center-of-Mass Energies, Centre-of-Mass Energies, Data Set, Efficiency Measurement, Integrated luminosity, Proton proton Collisions, Rate Measurements, Z Bosons, Luminance
Kaynak
European Physical Journal C
WoS Q Değeri
N/A
Scopus Q Değeri
Q1
Cilt
84
Sayı
1
Künye
Hayrapetyan, A., Tumasyan, A., Adam, W....Sağır, Sinan.(2024). Luminosity determination using Z boson production at the CMS experiment. European Physical Journal C
84(1),26
