Luminosity Calibration for the 2013 Proton-Lead and Proton-Proton Data Taking

Dedicated measurements of transverse beam profiles were performed with the CMS experiment. Using a technique proposed by S.~Van der Meer, together with the measurements of beam currents, these scans are used to determine the absolute luminosity delivered to the CMS interaction point by the LHC. The analysis uses data collected for proton-lead collisions at a nucleon-nucleon centre-of-mass energy of 5.02\TeV and proton-proton at 2.76\TeV to provide absolute normalization factors. The systematic uncertainty is estimated to be 3.4\% (3.6\%) for proton-lead (for reversed beam direction) and 3.7\% for proton-proton data.