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We report a search for time variations of the solar ^{8}B neutrino flux using 5804 live days of Super-Kamiokande data collected between May 31, 1996, and May 30, 2018. Super-Kamiokande measured the precise time of each solar neutrino interaction over 22 calendar years to search for solar neutrino flux modulations with unprecedented precision. Periodic modulations are searched for in a dataset comprising five-day interval solar neutrino flux measurements with a maximum likelihood method. We also applied the Lomb-Scargle method to this dataset to compare it with previous reports. The only significant modulation found is due to the elliptic orbit of the Earth around the Sun. The observed modulation is consistent with astronomical data: we measured an eccentricity of (1.53±0.35)%, and a perihelion shift of (-1.5±13.5) days.
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This corrects the article DOI: 10.1103/PhysRevLett.130.031802.
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We report a search for cosmic-ray boosted dark matter with protons using the 0.37 megaton×years data collected at Super-Kamiokande experiment during the 1996-2018 period (SKI-IV phase). We searched for an excess of proton recoils above the atmospheric neutrino background from the vicinity of the Galactic Center. No such excess is observed, and limits are calculated for two reference models of dark matter with either a constant interaction cross section or through a scalar mediator. This is the first experimental search for boosted dark matter with hadrons using directional information. The results present the most stringent limits on cosmic-ray boosted dark matter and exclude the dark matter-nucleon elastic scattering cross section between 10^{-33}cm^{2} and 10^{-27}cm^{2} for dark matter mass from 1 MeV/c^{2} to 300 MeV/c^{2}.
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OBJECTIVE: To establish, in collaboration with national Alzheimer Societies in Europe, practical and consensual recommendations for the end-of-life care of people with dementia. The aim of these recommendations is to provide a basis for understanding and action with regard to end-of-life care not only for family caregivers but also for professionals, policy makers and anyone with an interest in palliative care. DESIGN: A literature review was carried out by Alzheimer Europe in collaboration with a working group comprised of people from different backgrounds such as family caregivers, physicians, palliative care nurses and members of Alzheimer associations, who also prepared the draft recommendations during 4 sessions. These recommendations were then discussed with external experts and sent to Alzheimer Europe's member associations to be broadly discussed within their countries until a consensus was reached. SETTING: Alzheimer Europe is an umbrella association of European Alzheimer societies with 34 member associations in 30 different countries. SUBJECTS: Not applicable. METHODS: Literature review, workshops, dissemination by e-mail and during conferences, consensus finding. RESULTS: At the end of 2008, Alzheimer Europe prepared written recommendations on good end-of-life care for people with dementia. We are aware that this topic is challenging and that there is therefore a need for further discussion. CONCLUSION: In this article we aim to present these recommendations and to invite professionals to consider these important issues and to contribute towards a broader discussion.