| dc.contributor |
Messier, Mark |
|
| dc.creator |
Niner, Evan |
|
| dc.date |
2015-08-26T20:22:08Z |
|
| dc.date |
2015-08-26T20:22:08Z |
|
| dc.date |
2015-08 |
|
| dc.date.accessioned |
2023-02-21T11:20:12Z |
|
| dc.date.available |
2023-02-21T11:20:12Z |
|
| dc.identifier |
http://hdl.handle.net/2022/20350 |
|
| dc.identifier.uri |
http://localhost:8080/xmlui/handle/CUHPOERS/253046 |
|
| dc.description |
Thesis (Ph.D.) - Indiana University, Physics, 2015 |
|
| dc.description |
NOvA is a long-baseline neutrino oscillation experiment that uses two functionally
identical detectors separated by 810 kilometers at locations 14 milliradians o -axis from
the NuMI muon neutrino beam at Fermilab. At these locations the beam energy peaks at
2 GeV. This baseline is the longest in the world for an accelerator-based neutrino
oscillation experiment, which enhances the sensitivity to the neutrino mass ordering. The
experiment studies oscillations of the muon neutrino and anti-neutrino beam that is
produced. Both detectors completed commissioning in the summer of 2014 and continue
to collect data. One of the primary physics goals of the experiment is the measurement of
electron neutrino appearance in the muon neutrino beam which yields measurements of
the oscillation parameters $\sin^{2}2\theta_{13}$, $\delta$, and the neutrino mass ordering within the standard model of neutrino oscillations. This thesis presents the analysis of data collected between February 2014 and May 2015, corresponding to $3.52\times 10^{20}$ protons-on-target. In this first analysis NOvA recorded 6 electron neutrino candidates which is a $3.3\sigma$ observation of electron neutrino appearance. The T2K experiment performs the same measurement on a baseline of 295 kilometers and has a $1~\sigma$ preference for the normal mass ordering over the inverted ordering over the phase space of the CP violating parameter $\delta$, which is also weakly seen in the NOvA result. By the summer of 2016 NOvA will triple its statistics due to increased beam power and a completed detector. If electron neutrinos continue to be observed at the current rate NOvA will be able to establish a mass ordering preference at a similar confidence level to T2K. |
|
| dc.publisher |
[Bloomington, Ind.] : Indiana University |
|
| dc.subject |
high energy physics |
|
| dc.subject |
neutrinos |
|
| dc.subject |
oscillation |
|
| dc.subject |
long-baseline |
|
| dc.subject |
NOvA |
|
| dc.title |
Observation of Electron Neutrino Appearance in the NuMI Beam with the NOvA Experiment |
|
| dc.type |
Doctoral Dissertation |
|