Wednesday, February 1, 2012

1201.6485 (Suprabh Prakash et al.)

Getting the best out of T2K and NOvA    [PDF]

Suprabh Prakash, Sushant K. Raut, S. Uma Sankar
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.
View original: http://arxiv.org/abs/1201.6485

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