Panwalkar, Shruti M.. Search for extended Higgs Sector at the LHC using multileptons and photons in the final state. Retrieved from https://doi.org/doi:10.7282/T38C9TKB
DescriptionThis dissertation describes the search for an extension of the Higgs sector to Two Higgs Doublet Models. This entails searching for decays of the heavy scalar (H) and pseudo-scalar (A) Higgs bosons. These decays include the Standard Model-like Higgs h in the final state and lead to events with isolated leptons and photons. This search is carried out using a 19.5 fb−1 data sample at √s = 8 TeV collected by the Compact Muon Solenoid (CMS) experiment at the Large Hadron Collider (LHC). Observed mul- tilepton events with or without diphoton candidates are organized into exclusive search channels based on event kinematics. The search channels are ordered by the amount of expected Standard Model background. Standard Model backgrounds are estimated using data-based techniques and data-validated simulations. The observed events are consistent with the Standard Model expectation. Limits are placed on the cross section of gluon-gluon fusion production of H and A. Exclusions of the Two Higgs Doublet Models (TYPE I and TYPE II) are presented in terms of the relevant parameters of the model.