Karlsruhe 2024 – scientific programme

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T: Fachverband Teilchenphysik

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

T 52.4: Talk

Wednesday, March 6, 2024, 16:45–17:00, Geb. 20.30: 1.067

The LHC as Lepton--Proton Collider: Search for Resonant Production of Leptoquarks — •Daniel Buchin, Michael Holzbock, Sandra Kortner, and Hubert Kroha — Max-Planck-Institut für Physik

Searches for leptoquarks constitute an essential part of the physics programme at the ATLAS detector. These hypothetical particles couple to a lepton and a quark and are predicted by many extensions of the Standard Model such as Grand Unified Theories. The existing leptoquark searches at the LHC currently only consider production modes via quark and/or gluon interactions. The small but non-zero lepton content of the proton, however, allows also to study the significantly less explored resonant leptoquark production.

This production mode gives rise to lepton-plus-jet signatures. Thus, leptoquarks would emerge as distinctive peaks over the smoothly falling Standard Model background in the invariant mass spectrum of the lepton-plus-jet system. The talk will give an overview of the analysis strategy and discuss sensitivity estimates to previously unexplored leptoquark masses using this process.

Keywords: Leptoquark; ATLAS; LHC; BSM; Lepton PDF