# Heavy neutral lepton decay searches at the NA62 experiment at CERN

Iacobuzio, Lorenza (2020). Heavy neutral lepton decay searches at the NA62 experiment at CERN. University of Birmingham. Ph.D.

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## Abstract

A sensitivity study on a new dark fermion, the Heavy Neutral Lepton (HNL), decaying to pion-muon final states at the NA62 experiment at CERN is discussed in this thesis, within a theoretical framework called the Neutrino Minimal Standard Model. A full Monte Carlo simulation that has been developed to quantify the expected sensitivity of the NA62 experiment to HNL decays is detailed in this work.

A data-driven background evaluation has been performed on a data set collected for HNL decay searches during the 2016-2018 data taking by the NA62 experiment. Results on the expected number of background events to $$N \rightarrow\pi\mu$$ decays are presented in this thesis.

Type of Work: Thesis (Doctorates > Ph.D.)
Award Type: Doctorates > Ph.D.
Supervisor(s):
Supervisor(s)EmailORCID
Goudzovski, EvgueniUNSPECIFIEDUNSPECIFIED
Romano, AngelaUNSPECIFIEDUNSPECIFIED
Lazzeroni, CristinaUNSPECIFIEDUNSPECIFIED