Experimental Particle and Astro-Particle Physics Seminar

Monday 28 Mar 2022, 14:00 → 16:00 Europe/Zurich

Y16-G-05

Stefanos Leontsinis (University of Zurich (CH))

Abstract: The first search for vector-like leptons (VLL) in the context of the 4321 model, a UV-complete model with the potential to explain existing B-physics measurements that are in tension with standard model predictions is presented. The search is performed using 97 fb^-1 of proton-proton collisions at sqrt(s) = 13 TeV by targeting final states enriched in b-jets, considering various tau multiplicity channels. VLL masses in the range 500-1050 GeV are considered. At the low end of this mass range the expected limits are below the expected production cross-section, whereas at the high-end of the mass range the expected upper limits on the cross section are several times higher than the expected cross-section for electroweak production, but may already be sensitive to production including additional couplings to the new Z' introduced by the 4321 model.

14:00 → 15:00 Search for Vector-Like leptons in the 4321 model with the CMS detector

Speaker: Kyle James Read Cormier (University of Zurich (CH))