Comparison of track properties between Data and MC at CMS using early Run-3 data.
It is of great importance to check the agreement of reconstructed track properties between Data and Monte Carlo simulation using the CMS Tracker Detector. This is necessary to verify the ingredients used to produce large simulated event samples used for physics analysis, but also to benchmark promptly the reconstruction performance against simulation-based expectations. A validation tool within the CMS Data Quality Monitoring (DQM) framework was developed for that purpose, allowing to select different kinds of physics events and study in detail the track parameters. The tool complements the official DQM application and provides prompt feedback on track reconstruction performance during data taking. Comparisons have been produced using data from the early phase of the LHC Run 3, including collisions at the LHC injection energy of 900 GeV and the first 13.6 TeV beam data. A description of the tool along with its various components will be shown and some preliminary comparison of the most relevant tracking-related physics observables used for assessing the description of the CMS tracker simulation and calibrations will be presented.