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T: Fachverband Teilchenphysik

T 30: Higgs Charm, Di-Higgs

T 30.5: Talk

Tuesday, March 21, 2023, 18:00–18:15, HSZ/0105

Separation of HH and HZ processes in LHC events — •Celine Stauch, Otmar Biebel, Christoph Ames, and Lars Linden — LMU München

LHC Processes with HH final states and HZ final states are kinematically very similar due to H and Z boson being close in mass and both final states having similar cross sections in proton-proton collisons. While the H boson is a scalar particle, the Z boson has a spin of 1. The spin of the Z boson transfers to the jets in the final state leading to a correlation of the angles of these jets.

For HH or HZ final states resulting in at least 4 jets all possible combinations of the four energetically highest jets are calculated in order to find the combination closest in mass to a H or Z boson. A variable sensitive to the correlation of the angles of the final state jets is introduced, which is a modification of the Ellis-Karliner angle. This variable is investigated using generator simulation data for the best combination of jets in HH final states ans HZ final states.