Atmospheric, long baseline, and reactor neutrino data constraints on theta_{13}

An atmospheric neutrino oscillation tool that uses full three-neutrino oscillation probabilities and a full three-neutrino treatment of the Mikheyev-Smirnov-Wolfenstein effect, together with an analysis of the K2K, MINOS, and CHOOZ data, is used to examine the bounds on theta_{13}. The recent, more...

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Bibliographic Details
Published in:Physical review letters 2009-08, Vol.103 (6), p.061804-061804
Main Authors: Roa, J E, Latimer, D C, Ernst, D J
Format: Article
Language:English
Subjects:
ASYMMETRY
ELEMENTARY PARTICLES
FERMIONS
LEPTONS
MASSLESS PARTICLES
MATTER
NEUTRINO OSCILLATION
NEUTRINOS
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
PROBABILITY
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Summary:An atmospheric neutrino oscillation tool that uses full three-neutrino oscillation probabilities and a full three-neutrino treatment of the Mikheyev-Smirnov-Wolfenstein effect, together with an analysis of the K2K, MINOS, and CHOOZ data, is used to examine the bounds on theta_{13}. The recent, more finely binned, Super-K atmospheric data are employed. For L/E_{nu} greater, similar 10;{4} km/GeV, we previously found significant linear in theta_{13} terms. This analysis finds theta_{13} bounded from above by the atmospheric data while bounded from below by CHOOZ. The origin of this result arises from data in the previously mentioned very long baseline region; here, matter effects conspire with terms linear in theta_{13} to produce asymmetric bounds on theta_{13}. Assuming CP conservation, we find theta_{13} = -0.07_{-0.11};{+0.18} (90% C.L.).
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.103.061804