SMuK 2023 – scientific programme

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T: Fachverband Teilchenphysik

T 79: Searches III

T 79.4: Talk

Wednesday, March 22, 2023, 18:15–18:30, HSZ/0403

Search for high-mass resonances in dilepton final states with associated b-jets at the ATLAS experiment — Frank Ellinghaus and •Anna Vorländer for the ATLAS collaboration — Bergische Universität Wuppertal

A search for the Z′ boson in high-mass dilepton (e,µ) final states in association with b-jets is presented. The considered Z′ model is a candidate explanation for potential anomalies in B hadron decays and couples to b and s quarks in the production. The search is carried out using the dataset collected by the ATLAS detector in Run-2 of the LHC corresponding to an integrated luminosity of 139 fb⁻¹. Control, signal and validation regions are defined, and these regions are fitted in a profile-likelihood fit. Expected exclusion limits on the Z′ mass are obtained based on the results of the fit.