Speaker
Description
Searches for heavy neutral leptons (HNLs) produced in association with a charged lepton are presented, covering a mass range between 1 GeV and 1.5 TeV. Proton-proton collisions data recorded at 13 TeV with the CMS experiment and corresponding to an integrated luminosity of 138/fb are analyzed. One search strategy targets short-lived HNL scenarios and selects events with three charged leptons originating from the primary vertex, and includes for the first time up to one hadronically decaying tau lepton. A second search strategy targets long-lived HNL scenarios, where a charged lepton and a jet from the displaced HNL decay are required to form a secondary vertex. With both strategies, the exclusion limits on the HNL mixing parmeter as a function of the HNL mass are improved over previous search results.
