FIZIKA B 18 (2009) 3, 151-164

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DETERMINING THE SIGN OF D31 BY FUTURE LONG-BASELINE AND REACTOR EXPERIMENTS

BIPIN SINGH KORANGA, SOUMYA MAHAPATRA and S. UMA SANKAR

Department of Physics, Indian institute of Technology Bombay, Mumbai 400076, India

Received 22 February 2009;    Accepted 2 July 2009
Online 7 October 2009

We study the determination of neutrino mass hierarchy through neutrino experiments foreseen in the next ten years. The T2K neutrino oscillation experiment will start in 2009. In the experiment, the high intensity nm beam from JHF is directed to Super-Kamiokande (SK) detector 295 km away. The NOnA (off axes neutrino oscillation) experiment is being planned, with the nm beam from Fermi-Lab directed to a site 610 km away, which is 0, 7 and 14 milliradian off-axes. Both above experiments will measure nmne oscillation probability. The Double-CHOOZ experiment under construction will detect [`(ne)]s emitted by nuclear reactors both through a near detector (150 m) and a far detector (1.05 km) to measure [`(ne)] [`(ne)] survival probability. In this paper, we outline a procedure to determine the sign of D31 from the simulated data of the above experiments.

PACS numbers: 14.60.Lm, 13.15.+g
UDC 539.123

Keywords: neutrino experiment, mass hierarchy, neutrino oscillation experiments, sign of D31

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