Search for Pair-Produced Vector-Like Leptons in Final States with Third-Generation Leptons and at least Three b Quark Jets in Proton-Proton Collisions at √s = 13 TeV

Physics Letters B 2023
Kārlis Dreimanis, Markus Seidel, Toms Torims, Viesturs Veckalns, CMS Collaboration

he first search is presented for vector-like leptons (VLLs) in the context of the “4321 model”, an ultraviolet-complete model with the potential to explain existing B physics measurements that are in tension with standard model predictions. The analyzed data, corresponding to an integrated luminosity of 96.5fb−1, were recorded in 2017 and 2018 with the CMS detector at the LHC in proton-proton collisions at s=13TeV. Final states with ≥3 b -tagged jets and two third-generation leptons (ττ, τντ, or ντντ) are considered. Upper limits are derived on the VLL production cross section in the VLL mass range 500–1050 GeV. The maximum likelihood fit prefers the presence of signal at the level of 2.8 standard deviations, for a representative VLL mass point of 600 GeV. As a consequence, the observed upper limits are approximately double the expected limits.

Atslēgas vārdi
CMS Vector-like leptons VLL
DOI
10.1016/j.physletb.2023.137713
Hipersaite
https://www.sciencedirect.com/science/article/pii/S0370269323000473?via%3Dihub

The CMS Collaboration, A.Tumasyan, K.Dreimanis, M.Seidel, T.Torims, V.Veckalns ... [et al.]. Search for Pair-Produced Vector-Like Leptons in Final States with Third-Generation Leptons and at least Three b Quark Jets in Proton-Proton Collisions at √s = 13 TeV. Physics Letters B, 2023, Vol. 846, Article number 137713. ISSN 0370-2693. Available from: doi:10.1016/j.physletb.2023.137713

Publikācijas valoda
English (en)