Probing Right-Handed Neutrinos at Current and Future Colliders through Displaced Lepton Jets

Abstract

In this thesis, the sensitivity of searches for the MSM model in a 13 TeV and a 100 TeV hadron-hadron collider, were compared. The MSM predicts heavy right-handed neutrinos which mix with the SM neutrinos. This model was studied for the signal phase space of MN . 16 GeV, for a multileptonic nal state. All the nal decays were forced to muons, to get a signal topology of a prompt muon + a leptonic jet, comprised of muons lying close to each other. Backgrounds were estimated for this nal state. The sensitivity reach of a 13 TeV collider for this signal phase space was found for a luminosity of 30 fbð€€€1 and 300 fbð€€€1. The sensitivity reach of a 100 TeV hadron collider for this signal phase space was found for a luminosity of 300 fbð€€€1 and 3 abð€€€1 . It was found to improve for the p s=100 TeV hadron-hadron collider as compared to the 13 TeV collider for 300 fbð€€€1 of luminosity . It was observed to further improve for the 100 TeV hadron-hadron collider for 3 abð€€€1 of luminosity.