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arXiv · 1201.6485

Getting the best out of T2K and NOvA

Suprabh Prakash·Sushant K. Raut·S. Uma Sankar
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Abstract

We explore the combined physics potential of T2K and NOvA in light of the moderately large measured value of theta13. For sin^2 2*theta13 = 0.1, which is close to the best fit value, a 90% C.L. evidence for the hierarchy can be obtained only for the combinations (Normal hierarchy, -170 <= deltaCP <= 0) and (Inverted hierarchy, 0 <= deltaCP <= 170), with the currently planned runs of NOvA and T2K. However, the hierarchy can essentially be determined for any value of deltaCP, if the statistics of NOvA are increased by 50% and those of T2K are doubled. Such an increase will also give an allowed region of deltaCP around its true value, except for the CP conserving cases deltaCP = 0 or 180. 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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Suprabh Prakash, Sushant K. Raut, S. Uma Sankar. 2012-09-11. Getting the best out of T2K and NOvA. https://doi.org/10.1103/physrevd.86.033012

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