Latest Three Flavor Neutrino Oscillation Results from the NOvA Experiment.

Conference · Mon Jul 15 04:00:00 EDT 2024

DOI:https://doi.org/10.2172/2403267· OSTI ID:2403267

Singh, Ishwar ^[1]; Suter, Louise ^[2]; Choudhary, Brajesh C. ^[1]

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1. Delhi U.
2. Fermilab

NOvA, is a two-detector, long-baseline neutrino oscillation experiment located at Fermilab, Batavia, IL, USA. It is designed primarily to constrain neutrino oscillation parameters such as the atmospheric mass squared splitting, $$\Delta m^2_{32}$$, the mixing angle, $$\theta_{23}$$, neutrino mass hierachy, and the CP-violating phase, $$\delta_{CP}$$, using $$\nu_\mu \ (\bar{\nu}_\mu)$$ disappearance and $$\nu_e \ (\bar{\nu}_e)$$ appearance data. NOvA receives a high purity instense beam of neutrinos and anti-neutrinos from Fermilab's Neutrinos at Main Injector (NuMI) beamline. The NOvA near detector (ND) observes un-oscillated $$\nu_\mu \ (\bar{\nu}_\mu)$$ and beam $$\nu_e \ (\bar{\nu}_e)$$ events, while the far detector (FD), which is situated 810 km away from the near detector, records un-oscillated $$\nu_\mu \ (\bar{\nu}_\mu)$$ and oscillated $$\nu_e \ (\bar{\nu}_e)$$ events. The best fit values of the oscillation parameters are extracted by performing a joint fit of the far detector predicted events to data from $$\nu_\mu \to \nu_\mu$$, $$\bar{\nu}_\mu \to \bar{\nu}_\mu$$, $$\nu_\mu \to \nu_e$$, and $$\bar{\nu}_\mu \to \bar{\nu}_e$$ oscillation channels. We present latest joint fit results from NOvA based on a neutrino-beam exposure of $$27.24 \times 10^{20}$$ POT and an anti-neutrino beam exposure of $$12.55\times 10^{20}$$ POT and improved simulations.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
• Contributing Organization: NOvA
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 2403267
• Report Number(s): FERMILAB-POSTER-24-0120-PPD; oai:inspirehep.net:2807623
• Country of Publication: United States
• Language: English

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