First muon-neutrino disappearance study with an off-axis beam
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First muon-neutrino disappearance study with an off-axis beam

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First muon-neutrino disappearance study with an off-axis beam

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dc.contributor.author T2K Collaboration
dc.contributor.author Abe, K.
dc.contributor.author Cervera Villanueva, Anselmo
dc.contributor.author Escudero Sánchez, Lorena
dc.contributor.author Gómez Cadenas, Juan José
dc.contributor.author Hansen, C.
dc.contributor.author Monfregola, Laura
dc.contributor.author Sorel, Michel
dc.contributor.author Stamoulis, Panagiotis
dc.date.accessioned 2015-12-17T12:25:07Z
dc.date.available 2015-12-17T12:25:07Z
dc.date.issued 2012
dc.identifier.uri http://hdl.handle.net/10550/49591
dc.description.abstract We report a measurement of muon-neutrino disappearance in the T2K experiment. The 295-km muon-neutrino beam from Tokai to Kamioka is the first implementation of the off-axis technique in a long-baseline neutrino oscillation experiment. With data corresponding to 1.43 x 10(20) protons on target, we observe 31 fully-contained single mu-like ring events in Super-Kamiokande, compared with an expectation of 104 +/- 14 (syst) events without neutrino oscillations. The best-fit point for two-flavor nu(mu) -> nu(tau) oscillations is sin(2)(2 theta(23)) = 0.98 and vertical bar Delta m(32)(2)vertical bar = 2.65 x 10(-3) eV(2). The boundary of the 90% confidence region includes the points sin(2)(2 theta(23)), vertical bar Delta m(32)(2)vertical bar = (1.0, 3.1 x 10(-3) eV(2)), (0.84, 2.65 x 10(-3) eV(2)) and (1.0, 2.2 x 10(-3) eV(2)).
dc.language.iso eng
dc.relation.ispartof Physical Review D, 2012, vol. 85, num. 3, p. 031103 - 1-031103 - 8
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source T2K Collaboration Abe, K. Cervera Villanueva, Anselmo Escudero Sánchez, Lorena Gómez Cadenas, Juan José Hansen, C. Monfregola, Laura Sorel, Michel Stamoulis, Panagiotis 2012 First muon-neutrino disappearance study with an off-axis beam Physical Review D 85 3 031103 - 1 031103 - 8
dc.subject Física
dc.title First muon-neutrino disappearance study with an off-axis beam
dc.type info:eu-repo/semantics/article
dc.date.updated 2015-12-17T12:25:07Z
dc.identifier.doi http://dx.doi.org/10.1103/PhysRevD.85.031103
dc.identifier.idgrec 080382

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