Kazuhiro Hiraide

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We present results for nu(mu) oscillation in the KEK to Kamioka (K2K) long-baseline neutrino oscillation experiment. K2K uses an accelerator-produced nu(mu) beam with a mean energy of 1.3 GeV directed at the Super-Kamiokande detector. We observed the energy-dependent disappearance of nu(mu), which we presume have oscillated to nu(tau). The probability that(More)
Executive Summary This document presents the physics case for bringing SciBar, the fully active, finely segmented tracking detector at KEK, to the FNAL Booster Neutrino Beam (BNB) line. This unique opportunity arose with the termination of K2K beam operations in 2005. At that time, the SciBar detector became available for use in other neutrino beam lines,(More)
Citation The SciBooNE Collaboration et al. " Measurement of inclusive neutral current pi[superscript 0] production on carbon in a few-GeV neutrino beam. Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article(More)
Bosonic superweakly interacting massive particles (super-WIMPs) are a candidate for warm dark matter. With the absorption of such a boson by a xenon atom, these dark matter candidates would deposit an energy equivalent to their rest mass in the detector. This is the first direct detection experiment exploring the vector super-WIMPs in the mass range between(More)
In this note we will show that a positively expansive map of an arbitrary closed topological manifold is topologically conjugate to an expanding infra-nil-endomorphism. Let r be a group generated by {71,..., ik}-Then each 7 e T is represented as a word 7f117f2 ■ •-7^' and the number |pi| + IP2I + • • • + |p¡| is called the length of the word. The norm \\i\\(More)
This thesis presents the first-time neutrino oscillation studies considering entire oscillation parameters, two mass differences ∆m 2 12 , ∆m 2 23 , three mixing angles θ 12 , θ 23 , θ 13 , and one CP phase parameter (δ cp), by the atmospheric neutrino data observed in Super-Kamiokande. The Super-Kamiokande, a 50 kt water Cherenkov detector, started taking(More)
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