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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.citation	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.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.subject	Física
dc.title	First muon-neutrino disappearance study with an off-axis beam
dc.type	journal article	es_ES
dc.date.updated	2015-12-17T12:25:07Z
dc.identifier.doi	10.1103/PhysRevD.85.031103
dc.identifier.idgrec	080382
dc.rights.accessRights	open access	es_ES