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Title: Searches for Heavy Neutral Lepton Decays in the MicroBooNE Detector

Abstract

This thesis presents new results on upper limits for the search of Heavy Neutral Leptons (HNL) in the mass range 260-385 MeV decaying to $$\mu \pi$$ pairs using data collected with the MicroBooNE liquid argon time projection chamber operating at Fermilab. The measurement is the first of its kind ever performed in a liquid argon time projection chamber and it uses data collected in 2017 and 2018 with the Fermilab Booster Neutrino Beam, which has an average muon neutrino energy of 800 MeV, using an exposure corresponding to $$1.97 \times 10^{20}$$ protons-on-target and a subset of data passing a specific trigger configured to look for possible delayed decays, occurring after the neutrino spill. The results show limits on Majorana Heavy Neutral Leptons in the mass region 260-385 MeV for $$\lvert U_{\mu 4}\rvert^2$$ in the range [$$7 \times 10^{-8}$$, $$5 \times 10^{-7}$$], at the 90% confidence level.

Authors:
ORCiD logo [1]
  1. Manchester U.
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1576526
Report Number(s):
FERMILAB-THESIS-2019-14
oai:inspirehep.net:1766384
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Thesis/Dissertation
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY

Citation Formats

Porzio, Salvatore Davide. Searches for Heavy Neutral Lepton Decays in the MicroBooNE Detector. United States: N. p., 2019. Web. doi:10.2172/1576526.
Porzio, Salvatore Davide. Searches for Heavy Neutral Lepton Decays in the MicroBooNE Detector. United States. doi:10.2172/1576526.
Porzio, Salvatore Davide. Tue . "Searches for Heavy Neutral Lepton Decays in the MicroBooNE Detector". United States. doi:10.2172/1576526. https://www.osti.gov/servlets/purl/1576526.
@article{osti_1576526,
title = {Searches for Heavy Neutral Lepton Decays in the MicroBooNE Detector},
author = {Porzio, Salvatore Davide},
abstractNote = {This thesis presents new results on upper limits for the search of Heavy Neutral Leptons (HNL) in the mass range 260-385 MeV decaying to $\mu \pi$ pairs using data collected with the MicroBooNE liquid argon time projection chamber operating at Fermilab. The measurement is the first of its kind ever performed in a liquid argon time projection chamber and it uses data collected in 2017 and 2018 with the Fermilab Booster Neutrino Beam, which has an average muon neutrino energy of 800 MeV, using an exposure corresponding to $1.97 \times 10^{20}$ protons-on-target and a subset of data passing a specific trigger configured to look for possible delayed decays, occurring after the neutrino spill. The results show limits on Majorana Heavy Neutral Leptons in the mass region 260-385 MeV for $\lvert U_{\mu 4}\rvert^2$ in the range [$7 \times 10^{-8}$, $5 \times 10^{-7}$], at the 90% confidence level.},
doi = {10.2172/1576526},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {1}
}

Thesis/Dissertation:
Other availability
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