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American Physical Society, Physical Review D, Particles and fields, 1(61), 1999

DOI: 10.1103/physrevd.61.012001

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Determination of neutrino incoming direction in the CHOOZ experiment and its application to Supernova explosion location by scintillator detectors

Journal article published in 1999 by M. Apollonio, A. Baldini, C. Bemporad, E. Caffau, F. Cei, Y. Déclais, H. de Kerret, B. Dieterle, A. Etenko, L. Foresti, J. George, G. Giannini, M. Grassi, Y. Kozlov, W. Kropp and other authors.
This paper is available in a repository.
This paper is available in a repository.

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Abstract

The CHOOZ experiment has measured the antineutrino flux at about 1 km from two nuclear reactors to search for possible ν̅ e→ν̅ x oscillations with mass-squared differences as low as 10-3 eV2 for full mixing. We show that the analysis of the ∼2700 ν̅ e events, collected by our liquid scintillation detector, locates the antineutrino source within a cone of half-aperture ≈18° at the 68% C.L. We discuss the implications of this result for locating a supernova explosion.