Luminosity determination using Z boson production at the CMS experiment
Springer, 2024
Online
academicJournal
- 28
Zugriff:
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 $$\,\text {Te\hspace{-.08em}V}$$ Te V . 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 $$\,\text {pb}^{-1}$$ 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.
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Luminosity determination using Z boson production at the CMS experiment
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Autor/in / Beteiligte Person: | Hayrapetyan, A. ; Tumasyan, A. ; Adam, W. ; Andrejkovic, J. ; Bergauer, T. ; Chatterjee, S. ; Damanakis, K. ; Dragicevic, M. ; Valle, A. ; Hussain, P.S. ; Jeitler, M. ; Krammer, N. ; Liko, D. ; Mikulec, I. ; Schieck, J. ; Schöfbeck, R. ; Schwarz, D. ; Sonawane, M. ; Templ, S. ; Waltenberger, W. ; Wulz, C.E. ; Darwish, M.R. ; Janssen, T. ; Mechelen, P. ; Bols, E.S. ; D’Hondt, J. |
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Veröffentlichung: | Springer, 2024 |
Medientyp: | academicJournal |
Umfang: | 28 |
DOI: | 10.1140/epjc/s10052-023-12268-2 |
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