Precise luminosity determination at CMS
September 28, 2020
Precise luminosity calibration at bunched-beam hadron colliders like the Large Hadron Collider (LHC) is critical to determine fundamental parameters of the standard model and to discover or constrain beyond-the-standard-model phenomena. The results of luminosity determination at LHC interaction point 5 with the Compact Muon Solenoid (CMS) detector, using proton-proton (pp) collisions in 2018, is reported. The calibration is derived by analyzing the data of the van der Meer (vdM) scan program. The total uncertainty is 2.5% (similar to previous years) and is dominated by the contributions due to the x-y factorization assumption and luminometer linearity.
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