Abstract
The NuMI Off-Axis $\nu_{e}$ Appearance (NO$\nu$A) is the currently running leading long-baseline neutrino oscillation experiment, whose main physics goal is to explore the current issues in the neutrino sector, such as determination of the neutrino mass ordering, resolution of the octant of atmospheric mixing angle and to constrain the Dirac-type CP violating phase $\delta_{CP}$. In this paper, we would like to investigate whether it is possible to extract the best possible results from NO$\nu$A with a shorter time-span than its scheduled run period by analyzing its capability to discriminate the degeneracy among various neutrino oscillation parameters within four years of run time, with two years in each neutrino and antineutrino modes. Further, we study the same by adding the data from T2K experiment for a total of five years run with 3.5 years in neutrino mode and 1.5 years in antineutrino mode. We find that NO$\nu$A (2+2) has a better oscillation parameter degeneracy discrimination capability compared to its scheduled run period for four years, i.e, NO$\nu$A (3+1).
Highlights
A recent experimental result from MINOS [10] shows that θ23 is non-maximal
We investigate in this paper how to extract the best possible results from NuMI Off-Axis νe Appearance (NOνA) with shortest time span by analyzing its physics potential and degeneracy discrimination capability for a total of 4 years of runs, with 2 years in each neutrino and antineutrino modes
We have shown that the (2 + 2) years of run will provide a much better sensitivity for the mass hierarchy determination in comparison to its scheduled run for 4 years, i.e., 3 years in neutrino mode followed by 1 year in antineutrino mode
Summary
A recent experimental result from MINOS [10] shows that θ23 is non-maximal. The NOνA [11,12,13,14] experiment is currently running longbaseline neutrino oscillation experiment, which uses an upgraded NuMI beam power of 0.7 MW at Fermilab It has a 14 kton totally active scintillator detector (TASD) placed 0.8◦. It is of great importance to study the ability to discriminate the degeneracies between different oscillation parameters of this experiment within a minimal time span, since it leads to an early understanding of the neutrino oscillation parameter space In this context, we investigate in this paper how to extract the best possible results from NOνA with shortest time span by analyzing its physics potential and degeneracy discrimination capability for a total of 4 years of runs, with 2 years in each neutrino and antineutrino modes.
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