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T: Fachverband Teilchenphysik

T 52: Search for new particles 4 (leptoquarks, LHC)

T 52.2: Talk

Wednesday, March 6, 2024, 16:15–16:30, Geb. 20.30: 1.067

Search for resonant leptoquark production with the ATLAS experiment — •Christopher Maximilian Engel, Adrian Alvarez Fernandez, and Stefan Tapprogge — Institute for Physics, Johannes Gutenberg University, Mainz, Germany

A leptoquark is a hypothetical particle that couples to both leptons and quarks and carries both lepton and quark quantum numbers. Leptoquarks are predicted by many extensions of the Standard Model, including Grand Unified Theories, and might explain the similarities between the lepton and the quark generations. One way of searching for such a particle would be to look for the production of a single leptoquark in proton-proton collisions caused by the interaction of a lepton and a quark coming from the inner structure of protons.

This talk focuses on this resonant production of a single leptoquark decaying into a lepton and a quark, which results in a lepton+jet signal in the detector. This resonant structure in the invariant mass distribution of the lepton and jet system could be identified on top of a smoothly falling background. One of the main goals of this contribution is the optimization of the selection criteria to achieve maximum signal sensitivity. The current state of the studies and future goals will be presented.

Keywords: leptoquark; ATLAS; LHC