Heidelberg 2022 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 37: Search for New Particles 2

T 37.5: Vortrag

Dienstag, 22. März 2022, 17:15–17:30, T-H22

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

Searches for leptoquarks constitute an essential part of the physics programme at the ATLAS detector. These hypothetical particles couple to both leptons and quarks and are predicted by many extensions of the Standard Model such as Grand Unified Theories. In particular leptoquarks with couplings to third generation fermions are of general interest since they represent a possible solution to the tensions observed in tests of the lepton flavour universality in b → s and b → c transitions. By considering the small but non-zero lepton content of the proton due to quantum fluctuations it becomes possible to target the resonant production of leptoquarks at the LHC. Phenomenological studies indicate that this production mode yields competitive sensitivity to existing leptoquark searches.

Resonantly produced leptoquarks give rise to a lepton + jet signature. Interestingly, such a final state is currently not well covered by ATLAS and CMS. Therefore, the analysis of the resonant production is an exciting complementary approach to the current leptoquark searches that consider e.g. pair production. The talk will introduce the leptoquark models of interest for this analysis and outline its general strategy.