Ken‐ichi Okamoto

Development of a Data Overflow Protection System for Super-Kamiokande to Maximize Data from Nearby Supernovae

M. Mori, K. Abe, Y. Hayato, K. Hiraide et autres

Abstract Neutrinos from very nearby supernovae, such as Betelgeuse, are expected to generate more than ten million events over 10 s in Super-Kamokande (SK). At such large event rates, the buffers of the SK analog-to-digital conversion board (QBEE) will overflow, causing random …

jp, us, ca, es, kr, fr, gb, vn, pl, it (code pays fourni par la source)

AB0772 IDENTIFICATION OF CELLULAR TARGETS OF JAK INHIBITORS TO EXERT BONE-PROTECTIVE EFFECTS, OSTEOCLASTS OR OSTEOBLASTS?

Hisao Takayanagi, Masataka Komagamine, Nana Komatsu, Ken‐ichi Okamoto et autres

jp (code pays fourni par la source)

Solar neutrino measurements using the full data period of Super-Kamiokande-IV

K. Abe, C. Bronner, Y. Hayato, K. Hiraide et autres

An analysis of solar neutrino data from the fourth phase of Super-Kamiokande (SK-IV) from October 2008 to May 2018 is performed and the results are presented. The observation time of the dataset of SK-IV corresponds to 2970 days and the total live …

jp, us, ca, es, kr, fr, gb (code pays fourni par la source)

Solar neutrino measurements using the full data period of Super-Kamiokande-IV

K. Abe, C. Bronner, Y. Hayato, K. Hiraide et autres

An analysis of solar neutrino data from the fourth phase of Super-Kamiokande~(SK-IV) from October 2008 to May 2018 is performed and the results are presented. The observation time of the data set of SK-IV corresponds to $2970$~days and the total live time …

jp, us, es, ca, kr, fr, gb (code pays fourni par la source)

Erratum: Search for Cosmic-Ray Boosted Sub-GeV Dark Matter Using Recoil Protons at Super-Kamiokande [Phys. Rev. Lett. 130 , 031802 (2023)]

K. Abe, Y. Hayato, K. Hiraide, K. Ieki et autres

The SK limit in Fig. 3 of this Letter was too constraining by a factor of 20 due to a unit conversion error.This error was limited to Fig. 3 and a discussion paragraph.All other conclusions remain unchanged.The corrected figure is included in …

Search for Astrophysical Electron Antineutrinos in Super-Kamiokande with 0.01% Gadolinium-loaded Water

Masayuki Harada, K. Abe, C. Bronner, Y. Hayato et autres

Abstract We report the first search result for the flux of astrophysical electron antineutrinos for energies  ( 10 ) MeV in the gadolinium-loaded Super-Kamiokande (SK) detector. In 2020 June, gadolinium was introduced to the ultrapure water of the SK detector in …

jp, us, ca, es, kr, fr, vn, gb, it (code pays fourni par la source)

Search for astrophysical electron antineutrinos in Super-Kamiokande with 0.01wt% gadolinium-loaded water

Masayuki Harada, K. Abe, C. Bronner, Y. Hayato et autres

We report the first search result for the flux of astrophysical electron antineutrinos for energies O(10) MeV in the gadolinium-loaded Super-Kamiokande (SK) detector. In June 2020, gadolinium was introduced to the ultra-pure water of the SK detector in order to detect neutrons …

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Search for Cosmic-Ray Boosted Sub-GeV Dark Matter Using Recoil Protons at Super-Kamiokande

K. Abe, Y. Hayato, K. Hiraide, K. Ieki et autres

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 …

jp, us, ca, es, kr, fr, vn, gb, it (code pays fourni par la source)

Search for proton decay via p → μ + K 0 in 0.37 megaton-years exposure of Super-Kamiokande

R. Matsumoto, K. Abe, Y. Hayato, K. Hiraide et autres

We searched for proton decay via $p\ensuremath{\rightarrow}{\ensuremath{\mu}}^{+}{K}^{0}$ in $0.37\text{ }\text{ }\mathrm{Mton}\ifmmode\cdot\else\textperiodcentered\fi{}\mathrm{years}$ of data collected between 1996 and 2018 from the Super-Kamiokande water Cherenkov experiment. The selection criteria were defined separately for ${K}_{S}^{0}$ and ${K}_{L}^{0}$ channels. No significant event excess has been observed. …

jp, us, ca, es, kr, fr, vn, gb, it (code pays fourni par la source)

Neutron tagging following atmospheric neutrino events in a water Cherenkov detector

K. Abe, Y. Haga, Y. Hayato, K. Hiraide et autres

Abstract We present the development of neutron-tagging techniques in Super-Kamiokande IV using a neural network analysis. The detection efficiency of neutron capture on hydrogen is estimated to be 26%, with a mis-tag rate of 0.016 per neutrino event. The uncertainty of the …

jp, cn, ca, es, us, kr, at, se, fr (code pays fourni par la source)

Searching for Supernova Bursts in Super-Kamiokande IV

M. Mori, K. Abe, Y. Hayato, K. Hiraide et autres

Abstract Super-Kamiokande has been searching for neutrino bursts characteristic of core-collapse supernovae continuously, in real time, since the start of operations in 1996. The present work focuses on detecting more distant supernovae whose event rate may be too small to trigger in …

jp, ca, es, gb, us, kr, fr, it (code pays fourni par la source)

Pre-supernova Alert System for Super-Kamiokande

L. N. Machado, K. Abe, Y. Hayato, K. Hiraide et autres

Abstract In 2020, the Super-Kamiokande (SK) experiment moved to a new stage (SK-Gd) in which gadolinium (Gd) sulfate octahydrate was added to the water in the detector, enhancing the efficiency to detect thermal neutrons and consequently improving the sensitivity to low energy …

it, jp, ca, us, es, kr, fr, vn, gb (code pays fourni par la source)