New constraints on muon-neutrino to electron-neutrino transitions in MINOS

New constraints on muon-neutrino to electron-neutrino transitions in MINOS

This paper reports results from a search for νμ→ν e transitions by the MINOS experiment based on a 7×1020 protons-on-target exposure. Our observation of 54 candidate νe events in the far detector with a background of 49.1±7.0(stat)±2. 7(syst) events predicted by the measurements in the near detector...

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Bibliographic Details
Main Authors: Adamson, P, Andreopoulos, C, Auty, D, Ayres, D, Backhouse, C, Barr, G, Bernstein, R, Betancourt, M, Bhattarai, P, Bishai, M, Blake, A, Bock, G, Boehm, J, Boehnlein, D, Bogert, D, Bower, C, Budd, S, Cavanaugh, S, Cherdack, D, Childress, S, Choudhary, B, Cobb, J, Coelho, J, Coleman, S, Corwin, L
Format: Journal article
Language:English
Published: 2010
Description
Summary:This paper reports results from a search for νμ→ν e transitions by the MINOS experiment based on a 7×1020 protons-on-target exposure. Our observation of 54 candidate νe events in the far detector with a background of 49.1±7.0(stat)±2. 7(syst) events predicted by the measurements in the near detector requires 2 sin2(2θ13)sin2θ23<0. 12(0.20) at the 90% C.L. for the normal (inverted) mass hierarchy at δCP=0. The experiment sets the tightest limits to date on the value of θ13 for nearly all values of δCP for the normal neutrino mass hierarchy and maximal sin2(2θ 23). © 2010 The American Physical Society.

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