Higgs data, effective operators and dark matter: A study with extended scalar sectors

by Jayita Lahiri (Harish-Chandra Research Institute (HRI) - India)

Tuesday 29 Oct 2019, 16:00 → 17:30 Europe/Rome

Aula Conversi (Dip. di Fisica - Edificio G. Marconi)

Higgs data is being precisely analyzed to explore new physics.A model independent global fit has been performed on scale factors and Wilson coefficients of higher dimensional operators,the allowed values of the coefficients are translated into regions of parameter space of models with extended scalar sectors. We also explore the heavier scalar in an extended scalar sector being a DM-portal.Assuming 2HDM and scalar gauge singlet DM, we show that the heavy scalar can serve as DM-portal consistently with data and have good invisible branching.We explore among two different final states,which one gives better signal significance at HL-LHC.We also improve our cut-based results with BDT and ANN.