Escaping Events at the NOvA Far Detector
- Minnesota U.
aThe NuMI Off-axis $$\nu_e$$ Appearance (NOvA) experiment studies neutrino oscillations in the NuMI (Neutrinos at the Main Injector) beam. The goal of the experiment is to determine the mass hierarchy and measure $$\delta_{CP}$$, however it is also sensitive to $$\sin\theta_{23}$$, and $$\Delta m^2_{32}$$. The present work tries to improve experimental sensitivity to the oscillation parameters by considering neutrino events which are discarded by the previous analysis - escaping events. The biggest issues with the escaping sample are significant cosmic background and correct energy estimation. Both issues were addressed and inclusion of escaping sample to the final fit led to an effective increase of statistics by 4% with best- fit measurements of $$\sin\theta^2_{23} = 0.504$$ and $$\Delta m^2_{32} = 2.45 \times 10^{-3}$$ eV$^2$.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1529332
- Report Number(s):
- FERMILAB-THESIS-2018-32; 1740226
- Country of Publication:
- United States
- Language:
- English
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