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Title: Super-Kamiokande [CETUP 2015: Workshop on dark matter, neutrino physics and astrophysics; PPC 2015: 9. international conference on interconnections between particle physics and cosmology]

Abstract

The Super-Kamiokande experiment performs a large variety of studies, many of them in the neutrino sector. The archetypes are atmospheric neutrino (recently awarded with the Nobel prize for Mr. T. Kajita) and the solar neutrinos analyses. In these proceedings we report our latest results and present updates to indirect dark matter searches, our solar neutrino analysis and discuss the future upgrade of Super-Kamiokande by loading gadolinium into our ultra-pure water.

Authors:
 [1]
  1. Kavli IPMU (WPI), UTIAS, The University of Tokyo, Kashiwa, Chiba 277-8583 (Japan)
Publication Date:
OSTI Identifier:
22609094
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1743; Journal Issue: 1; Conference: CETUP 2015: Workshop on dark matter, neutrino physics and astrophysics, Deadwood, SD (United States), 15 Jun - 17 Jul 2015, PPC 2015: 9. international conference on interconnections between particle physics and cosmology, Deadwood, SD (United States), 15 Jun - 17 Jul 2015; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; NONLUMINOUS MATTER; SOLAR NEUTRINOS; SUPER-KAMIOKANDE NEUTRINO DETECTOR; WATER

Citation Formats

Magro, Lluís Martí, E-mail: martillu@suketto.icrr.u-tokyo.ac.jp. Super-Kamiokande [CETUP 2015: Workshop on dark matter, neutrino physics and astrophysics; PPC 2015: 9. international conference on interconnections between particle physics and cosmology]. United States: N. p., 2016. Web. doi:10.1063/1.4953311.
Magro, Lluís Martí, E-mail: martillu@suketto.icrr.u-tokyo.ac.jp. Super-Kamiokande [CETUP 2015: Workshop on dark matter, neutrino physics and astrophysics; PPC 2015: 9. international conference on interconnections between particle physics and cosmology]. United States. doi:10.1063/1.4953311.
Magro, Lluís Martí, E-mail: martillu@suketto.icrr.u-tokyo.ac.jp. 2016. "Super-Kamiokande [CETUP 2015: Workshop on dark matter, neutrino physics and astrophysics; PPC 2015: 9. international conference on interconnections between particle physics and cosmology]". United States. doi:10.1063/1.4953311.
@article{osti_22609094,
title = {Super-Kamiokande [CETUP 2015: Workshop on dark matter, neutrino physics and astrophysics; PPC 2015: 9. international conference on interconnections between particle physics and cosmology]},
author = {Magro, Lluís Martí, E-mail: martillu@suketto.icrr.u-tokyo.ac.jp},
abstractNote = {The Super-Kamiokande experiment performs a large variety of studies, many of them in the neutrino sector. The archetypes are atmospheric neutrino (recently awarded with the Nobel prize for Mr. T. Kajita) and the solar neutrinos analyses. In these proceedings we report our latest results and present updates to indirect dark matter searches, our solar neutrino analysis and discuss the future upgrade of Super-Kamiokande by loading gadolinium into our ultra-pure water.},
doi = {10.1063/1.4953311},
journal = {AIP Conference Proceedings},
number = 1,
volume = 1743,
place = {United States},
year = 2016,
month = 6
}
  • This report is a compilation of papers reflecting current trends in non-accelerator particle physics, corresponding to talks that its author was invited to present at the Workshop on Tibet Cosmic Ray Experiment and Related Physics Topics held in Beijing, China, April 4--13, 1995. The papers are entitled `Neutrino Mass and Oscillation`, `High Energy Neutrino Astrophysics`, `Detection of Dark Matter`, `Search for Strange Quark Matter`, and `Magnetic Monopole Searches`. The report is introduced by a survey of the field and a brief description of each of the author`s papers.
  • Since rotational or similar modulation of the solar neutrino flux would seem to be incompatible with the currently accepted theoretical interpretation of the solar neutrino deficit, it is important to determine whether or not such modulation occurs. There have been conflicting claims as to whether or not power-spectrum analysis of the Super-Kamiokande solar neutrino data yields indication of variability. Comparison of these claims is complicated by the fact that the relevant articles may use different data sets, different methods of analysis, and different procedures for significance estimation. The purpose of this article is to clarify the role of power-spectrum analysis.more » To this end, we analyze primarily the Super-Kamiokande 5-day data set, and we use a standard procedure for significance estimation as used by the Super-Kamiokande collaboration. We then analyze this data set, with this method of significance estimation, using six methods of power-spectrum analysis. Five of these have been used in published articles, and the other is a method that might have been used. We find that, with one exception, the results of these calculations are consistent with those of previously published analyses. We find that the power of the principal modulation (that at 9.43 yr{sup -1}) is greater in analyses that take account of error estimates than in the basic Lomb-Scargle analysis that does not take account of error estimates. The corresponding significance level ranges between 98% and 99.3%, depending on the details of the analysis. Concerning the recent article by Koshio, we find that we can reproduce the results of his power-spectrum analysis but not the results of his Monte Carlo simulations, and we have a suggestion that may account for the difference. We also comment on a recent article by Yoo et al. We discuss, in terms of subdominant processes, possible neutrino-physics interpretations of the apparent variability of the Super-Kamiokande measurements, and we suggest steps that could be taken to resolve the question of variability of the solar neutrino flux.« less
  • We develop a model-independent method for analyzing the SNO and Super Kamiokande solar neutrino experiments simultaneously, and for establishing relations between them. Representing the rates for the two experiments by a point in a two-dimensional rate-space diagram, we determine the regions of the diagram corresponding to different solutions of the solar neutrino problem. We can then use the method to ascertain which theoretical hypotheses are consistent with the observed rates. {copyright} {ital 1996 The American Physical Society.}