Misura della produzione di coppie b-anti b in collisioni protone-protone a 13 TeV nell'esperimento CMS / Measurement of bb_bar production in s = 13 TeV pp collisions with the CMS experiment
The measurent of the bb_bar production cross-section is a very important test of our understanding of QCD at high energies. In this thesis we will present a novel method for this measurement using comparison between pileup and signal vertices, which avoids sistematic errors due to luminosity or branching ratios of intermediate processes and might provide a better accuracy compared to previous measures
