Contribution
Precision luminosity measurement in proton-proton collisions at CMS in Run 3
Speakers
- Prof. José Feliciano BENITEZ RUBIO
Primary authors
- Prof. José Feliciano BENITEZ RUBIO (Universidad de Sonora)
Content
The luminosity measurement is among the leading sources of experimental uncertainties in SM precision physics at LHC, for example for measurement of fiducial cross-sections of W, Z and Higgs. The LHC experiments target 1% uncertainty on the yearly calibrated offline luminosity. In this talk we report the measurement of the integrated luminosity in proton-proton collisions at a center-of-mass energy of 13.6 TeV in Run 3 with the CMS experiment. Various subdetectors (luminometers) provide a stable and linear measurement of object rates at a wide range of instantaneous luminosity. Each luminometer is calibrated from beam-separation scans with the van der Meer method. The total preliminary uncertainty achieved (including calibration, stability and linearity sources) on the integrated luminosity is 1.4% for 2022 and 1.3% for 2023.