Luminosity Measurements with the CMS Detector

Luminosity is a crucial component of searches beyond the standard model physics with the Large Hadron Collider (LHC). During the 2022-23 data-taking period, the CMS experiment continued its pursuit of precision luminosity measurements with the Pixel Luminosity Telescope and other sub-detectors that are independent of the central data acquisition of the CMS experiment. These detectors measure the instantaneous luminosity for each bunch-crossing using zero-counting, rate scaling, or energy sum algorithms. Their calibration is performed with the Van de Meer scan method where the LHC proton beams are swept transversely across each other. Additionally, various beam-related and detector-intrinsic corrections are applied to improve the accuracy of the measurements. This talk provides an overview of the performance of the CMS online luminosity detectors during the 2022-23 data-taking period.