Göttingen 2025 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 44: Searches/BSM III (Long-lived, Misc.)
T 44.5: Vortrag
Mittwoch, 2. April 2025, 17:15–17:30, ZHG010
Search for high-mass resonances in dilepton final states with associated b-jets at the ATLAS experiment — Frank Ellinghaus and •Anna Bingham — Bergische Universität Wuppertal
An overview of a search for a Z′ boson in high-mass dilepton (ee,µµ) final states with associated 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 140 fb−1. Backgrounds are estimated from MC and also by data-driven methods. Control, signal and validation regions are defined, and these regions are fitted in a profile-likelihood fit. Exclusion limits on the Z′ mass are obtained based on the results of the fit.
Keywords: ATLAS; Search; dilepton