Getting the best out of T2K and NOvA

Details Getting the best out of T2K and NOvA Getting the best out of T2K and NOvA

2012-01-31

arxiv.org/abs/1201.6485v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

Version 2: Results mostly same; one conclusion changed. 34 pages, 31 figures, 1 table

Scientific paper

We explore the combined physics potential of T2K and NOvA in light of the large measured value of theta13. For the best fit value of sin^2 2*theta13 = 0.08, the hierarchy can be determined only for the combinations (NH, -150 <= deltaCP <= -30) and (IH, 30 <= deltaCP <= 150), with the currently planned runs of NOvA and T2K. However, the hierarchy can essentially be determined for any value of deltaCP, if (a) the statistics of NOvA are increased by 50% and (b) T2K has 3 year runs in neutrino and antineutrino modes with double the present statistics. Such an increase will also determine the correct half plane of deltaCP. We demonstrate that any measurement of deltaCP is not possible without first determining hierarchy. We find that comparable data from a shorter baseline (L ~ 130 km) experiment will not lead to any significant improvement.

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