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T: Fachverband Teilchenphysik

T 32: QCD (Exp.) 1

T 32.5: Talk

Tuesday, March 22, 2022, 17:15–17:30, T-H17

Triple differential measurement of the inclusive Z+jet production — •Cedric Verstege, Klaus Rabbertz, and Günter Quast — Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie (KIT)

The triple differential inclusive cross section for Z (→ µµ) + jet production is measured combining CMS Run II data from 2016-2018. The measurement uses the observables p_T^Z, the difference in rapidity between the Z-Boson and the jet y^* as well as the boost of the center of mass system y_b. Those variables allow for a suitable division of the phase space in order to obtain a better sensitivity to the partonic subprocesses.

Detector effects are corrected via a three-dimensional unfolding procedure. The resulting cross section is then compared to QCD theory predictions at next-to-next-to-leading order. The results can be used as constraints for fitting the PDFs.