Conveners
BSM III
- Rodolfo Capdevilla (University of Notre Dame)
The unprecedented energy and luminosity of LHC has been used to search for the production of pairs of bosons, as predicted in heavy vector triplet and radion models, amongst others. The searches reported here use the full-run 2 ATLAS data set to look for VV, VH, HH and Hgamma boson pairs. Various boson decay modes including W->lnu and qq, Z->ll, vv and qq, and H->bb and tautau are used, with...
Exclusive dilepton resonance have been a cornerstone of LHC searches probing the highest energies. However, given that no derivations from the SM have been observed with the full run-2 data. it is necessary to go beyond this simple paradigm. This includes searches for non-resonant dilepton phenomena, such as may be produce by a resonance above the scale of direct detection at the LHC, or in...
Leptons are a powerful probe of new physics at the LHC. Many models of BSM physics such as extra dimensions, an extended gauge sector, leptoquarks and resonant or non-resonant phenomena, are expected to manifest themselves in final states enriched with leptons. This talk presents searches by CMS for new exotic signals in leptonic final states. I will be focusing on the recent results obtained...
Multicharged vectorlike leptons (VLL) appear in BSM models such as TeV-scale see-saw neutrino masses, little Higgs etc. Their decays depend generally on how they couple to the W, Z and Higgs along with SM leptons. Based on that, it is possible to observe the VLL signatures in multilepton final states at LHC. Motivated by the muon (g-2) problem and flavor anomalies, it is possible to construct...
Motivated by the no-show of any New Physics signals coming from the BSM searches in the post-Higgs era of the LHC, we study the scalar sector of the original electroweak-scale right-handed neutrino (EWν_R) model, which includes Majorana masses and mirror fermions having masses in the EW scale, within the reach of the current colliders. This scenario successfully links the see-saw mechanism,...
One of the assumptions of simplified models is that there are a few new particles and interactions accessible at the LHC and all other new particles are heavy and decoupled. Effective field theory (EFT) methods provide a consistent method to test this assumption. Simplified models can be augmented with higher order operators involving the new particles accessible at the LHC. Any UV
completion...
We present the extension of a search for model-independent new physics events in dilepton production at the LHC using the SMEFT toolkit. This search, for the first time, includes the effect both of the set of four-fermion operators that give contributions growing with energy and the operators which alter the would-be SM couplings of the Z boson to fermions, leading to corrections proportional...
