Description
NOvA, the NuMI Off-Axis $\nu_e$ Appearance experiment, uses an established muon neutrino, or antineutrino, beam from Fermilab to study neutrino oscillations. NOvA is composed of two functionally equivalent liquid scintillator detectors; the near detector is located at Fermilab and the far detector 810 km away in Ash River, Minnesota. The $\nu_e$ appearance measurement relies on accurate electromagnetic energy reconstruction, which is dependent on the energy scale calibration of the detector. Studying the $\pi^{0} ~ \rightarrow ~ \gamma \gamma$ decay, where the invariant $\pi^{0}$ mass is directly correlated to the energy scale, we can directly “peak” at the electromagnetic energy calibration. Our sample is mainly composed of neutral pions produced through neutral current coherent neutrino scattering in the NOvA Near Detector. In this poster, we discuss the particle identification tools used to produce our sample and the latest results of the $\pi^{0}$ invariant mass peak reconstruction.
| Collaboration | NOvA |
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