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Measurement of neutrino oscillation by the K2K experiment
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Measurement of neutrino oscillation by the K2K experiment
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| K2K Collaboration; Ahn, M.H.; Burguet Castell, Jordi; Català Pérez, Joan; Cervera Villanueva, Anselmo; Gómez Cadenas, Juan José Perfil; Novella Garijo, Pau; Sorel, Michel; Vidal Sitjes, Gabriel; Tornero López, Ana María | |||
| This document is a artículoDate2006 | |||
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Este documento está disponible también en : http://hdl.handle.net/10550/49638 |
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| We present measurements of nu(mu) disappearance in K2K, the KEK to Kamioka long-baseline neutrino oscillation experiment. One-hundred and twelve beam-originated neutrino events are observed in the fiducial volume of Super-Kamiokande with an expectation of 158.1(-8.6)(+9.2) events without oscillation. A distortion of the energy spectrum is also seen in 58 single-ring muonlike events with reconstructed energies. The probability that the observations are explained by the expectation for no neutrino oscillation is 0.0015% (4.3 sigma). In a two-flavor oscillation scenario, the allowed Delta m(2) region at sin(2)2 theta=1 is between 1.9 and 3.5x10(-3) eV(2) at the 90% C.L. with a best-fit value of 2.8x10(-3) eV(2). | |||
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K2K Collaboration Ahn, M.H. Burguet Castell, Jordi Català Pérez, Joan Cervera Villanueva, Anselmo Gómez Cadenas, Juan José Novella Garijo, Pau Sorel, Michel Vidal Sitjes, Gabriel Tornero López, Ana María 2006 Measurement of neutrino oscillation by the K2K experiment Physical Review D 74 7 |
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| http://dx.doi.org/10.1103/PhysRevD.74.072003 |
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