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Determination of neutrino mass hierarchy and θ13 with a remote detector of reactor antineutrinos

John G. Learned, Stephen T. Dye, Sandip Pakvasa, and Robert C. Svoboda
Phys. Rev. D 78, 071302(R) – Published 9 October 2008

Abstract

We describe a method for determining the hierarchy of the neutrino mass spectrum and θ13 through remote detection of electron antineutrinos from a nuclear reactor. This method utilizing a single, 10-kiloton scintillating liquid detector at a distance of 49–63 kilometers from the reactor complex measures mass-squared differences involving ν3 with a one(ten)-year exposure provided sin2(2θ13)>0.05(0.02). Our technique applies the Fourier transform to the event rate as a function of neutrino flight distance over neutrino energy. Sweeping a relevant range of δm2 resolves separate spectral peaks for δm231 and δm232. For normal (inverted) hierarchy |δm231| is greater (lesser) than |δm232|. This robust determination requires a detector energy resolution of 3.5%/E.

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  • Received 2 September 2008

DOI:https://doi.org/10.1103/PhysRevD.78.071302

©2008 American Physical Society

Authors & Affiliations

John G. Learned1, Stephen T. Dye1,2, Sandip Pakvasa1, and Robert C. Svoboda3,4

  • 1Department of Physics and Astronomy, University of Hawaii at Manoa, 2505 Correa Road, Honolulu, Hawaii 96822, USA
  • 2College of Natural Sciences, Hawaii Pacific University, 45-045 Kamehameha Highway, Kaneohe, Hawaii 96744, USA
  • 3Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, USA
  • 4Department of Physics, University of California, One Shields Avenue, Davis, California 95616, USA

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Issue

Vol. 78, Iss. 7 — 1 October 2008

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