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Title: Physics at the MeV-Scale in Liquid Argon Time Projection Chambers

Abstract

The liquid argon time projection chamber (LArTPC) is the detection technology chosen for several Fermilab-based neutrino experiments. This technology will be used in studies of neutrino cross-sections and oscillations, neutrinos from supernovae as well as a variety of studies of beyond the Standard Model physics. This thesis explores the use of these detectors to study MeV-scale activity. MeV-scale electrons arising from Compton scatters of deexcitation photons and photons from inelastic neutron scattering in neutrino-nucleus interactions are reconstructed using novel methods presented here. This work represents the first demonstration of MeV-scale physics capabilities in a LArTPC neutrino experiment as well as the first observation of neutrino-produced photons from nuclear de-excitation and inelastic neutron scattering. A search for millicharged particles, postulated by theories of beyond the standard model physics, is also performed using data from a LArTPC and the low-ener gy reconstruction techniques developed. The results set world-leading bounds on the parameter space of millicharged particles. The work in this thesis demonstrates that studies of MeV-scale activity and new physics are possible with LArTPC technology and provides the foundation for future LArTPC studies of low energy neutrinos and new physics.

Authors:
 [1]
  1. IIT, Chicago
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:
1599304
Report Number(s):
FERMILAB-THESIS-2020-03
oai:inspirehep.net:1779799
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Thesis/Dissertation
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Lepetic, Ivan Thomas. Physics at the MeV-Scale in Liquid Argon Time Projection Chambers. United States: N. p., 2020. Web. doi:10.2172/1599304.
Lepetic, Ivan Thomas. Physics at the MeV-Scale in Liquid Argon Time Projection Chambers. United States. doi:10.2172/1599304.
Lepetic, Ivan Thomas. Wed . "Physics at the MeV-Scale in Liquid Argon Time Projection Chambers". United States. doi:10.2172/1599304. https://www.osti.gov/servlets/purl/1599304.
@article{osti_1599304,
title = {Physics at the MeV-Scale in Liquid Argon Time Projection Chambers},
author = {Lepetic, Ivan Thomas},
abstractNote = {The liquid argon time projection chamber (LArTPC) is the detection technology chosen for several Fermilab-based neutrino experiments. This technology will be used in studies of neutrino cross-sections and oscillations, neutrinos from supernovae as well as a variety of studies of beyond the Standard Model physics. This thesis explores the use of these detectors to study MeV-scale activity. MeV-scale electrons arising from Compton scatters of deexcitation photons and photons from inelastic neutron scattering in neutrino-nucleus interactions are reconstructed using novel methods presented here. This work represents the first demonstration of MeV-scale physics capabilities in a LArTPC neutrino experiment as well as the first observation of neutrino-produced photons from nuclear de-excitation and inelastic neutron scattering. A search for millicharged particles, postulated by theories of beyond the standard model physics, is also performed using data from a LArTPC and the low-ener gy reconstruction techniques developed. The results set world-leading bounds on the parameter space of millicharged particles. The work in this thesis demonstrates that studies of MeV-scale activity and new physics are possible with LArTPC technology and provides the foundation for future LArTPC studies of low energy neutrinos and new physics.},
doi = {10.2172/1599304},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {1}
}

Thesis/Dissertation:
Other availability
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