Laflotte, Ian Wylde. Inclusive jet production in proton-proton collisions at √s = 5 TeV with the CMS detector. Retrieved from https://doi.org/doi:10.7282/t3-1jcf-b337
DescriptionQuarks and gluons (partons) compose the protons and neutrons (nucleons) around us, and obey the laws of quantum chromodynamics (QCD). In pp, pPb, and PbPb collisions, collimated showers of final-state particles called jets are observed, having been produced when partons within incident nucleons exchange a large amount of momentum, break free from the parent nucleons, and undergo showering and hadronization. The cross section of inclusive jet production σjet, is predictable by perturbative QCD (pQCD), but comparisons with measurements are non-trivial due to detector effects. Unfolding σjet for such effects is possible, utilizing the CMS detector response and a pQCD prediction as a prior distribution. When σjet is measured in pp collisions, it can help study the gluon parton distribution function (PDF) of the proton, extract the strong coupling constant alphaS, and act as a reference measurement for pPb/PbPb analyses. In this thesis, σjet for anti-kT particle flow jets with radius parameter R = 0.4 is measured as a dual differential in jet transverse momentum and rapidity. Two different jet-triggered pp datasets, recorded in 2015 at √s = 5 are used, having intergrated luminosities of 27.4 pb-1. Results are found to be highly compatible with higher order pQCD calculations for all utilized scale-choices and PDFs.