Heidelberg 2022 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 32: QCD (Exp.) 1
T 32.3: Vortrag
Dienstag, 22. März 2022, 16:45–17:00, T-H17
Triple-differential measurement of dijet production at √s = 13 TeV with the CMS detector — Günter Quast, Klaus Rabbertz, and •Daniel Savoiu — Institute of Experimental Particle Physics (ETP), Karlsruhe Institute of Technology (KIT)
Jet measurements at high precision are an essential probe of quantum chromodynamics (QCD) and constitute valuable experimental inputs to determinations of fundamental QCD parameters and of the parton distribution functions (PDFs) describing the structure of protons.
In this talk, we present a recent measurement of the dijet production cross section using proton-proton collision data collected at a center-of-mass energy of 13 TeV by the CMS detector at the CERN LHC, amounting to an integrated luminosity of 36.3 fb−1. Jets are reconstructed using the anti-kT algorithm for radius parameters of R = 0.4 and 0.8 and cross sections are measured triple-differentially as a function of the kinematic properties of the two jets with largest transverse momenta. After accounting for detector- and reconstruction-specific effects in a three-dimensional unfolding procedure, the data are compared to theoretical predictions derived at next-to-next-to-leading order in perturbative QCD and the impact of the data for determinations of the proton PDFs and the strong coupling constant αs is studied.