S. Sakai

activity

20202026

p \to e^{+} π^{0}

and

p \to μ^{+} π^{0}

with an enlarged fiducial volume in Super-Kamiokande I-IV

132 citations · 533 across the 22 of their papers we have counts for

collaborators

Showing hep-exShow all

16 papers · 1 filter

hep-ex2026

Search for the $^{16} O (ppp) \to^{13} C π^{+} π^{+} e^{+}$ Decay Mode in Super-Kamiokande Using Machine Learning Techniques

Kamiokande Collaboration, J. Feng, K. Abe +296

We report a new partial lifetime limit of $4.2 \times 1 0^{32}$ years for the trinucleon decay mode $^{16} O (ppp) \to^{13} C π^{+} π^{+} e^{+}$ , obtained from a searc…

hep-ex2024

Search for proton decay via $p \to e^{+} η$ and $p \to μ^{+} η$ with a 0.37 Mton-year exposure of Super-Kamiokande

Kamiokande Collaboration, N. Taniuchi, K. Abe +288

A search for proton decay into $e^{+} / μ^{+}$ and a $η$ meson has been performed using data from a 0.373 Mton $\cdot$ year exposure (6050.3 live days) of Super-Kamiokande. Compared to pre…

hep-ex2024★ 14 cited

Combined Pre-Supernova Alert System with Kamland and Super-Kamiokande

KamLAND, Super-Kamiokande Collaborations, : +311

Preceding a core-collapse supernova, various processes produce an increasing amount of neutrinos of all flavors characterized by mounting energies from the interior of massive star…

hep-ex2023★ 35 cited

Atmospheric neutrino oscillation analysis with neutron tagging and an expanded fiducial volume in Super-Kamiokande I-V

Kamiokande Collaboration, T. Wester, K. Abe +233

We present a measurement of neutrino oscillation parameters with the Super-Kamiokande detector using atmospheric neutrinos from the complete pure-water SK I-V (April 1996-July 2020…

hep-ex2023★ 1 cited

Measurement of the neutrino-oxygen neutral-current quasielastic cross section using atmospheric neutrinos in the SK-Gd experiment

S. Sakai, K. Abe, C. Bronner +233

We report the first measurement of the atmospheric neutrino-oxygen neutral-current quasielastic (NCQE) cross section in the gadolinium-loaded Super-Kamiokande (SK) water Cherenkov…

hep-ex2023

Search for Periodic Time Variations of the Solar $^{8}$ B Neutrino Flux between 1996 and 2018 in Super-Kamiokande

K. Abe, C. Bronner, Y. Hayato +233

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-Kamiok…

hep-ex2022

Measurement of the cosmogenic neutron yield in Super-Kamiokande with gadolinium loaded water

Kamiokande Collaboration, M. Shinoki, K. Abe +238

Cosmic-ray muons that enter the Super-Kamiokande detector cause hadronic showers due to spallation in water, producing neutrons and radioactive isotopes. Those are a major backgrou…

hep-ex2022★ 11 cited

Neutron Tagging following Atmospheric Neutrino Events in a Water Cherenkov Detector

K. Abe, Y. Haga, Y. Hayato +301

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 estimate…

hep-ex2022★ 41 cited

Search for Cosmic-ray Boosted Sub-GeV Dark Matter using Recoil Protons at Super-Kamiokande

Kamiokande Collaboration, K. Abe, Y. Hayato +218

We report a search for cosmic-ray boosted dark matter with protons using the 0.37 megaton $\times$ years data collected at Super-Kamiokande experiment during the 1996-2018 period (SK…

hep-ex2022

Search for proton decay via $p \to μ^{+} K^{0}$ in 0.37 megaton-years exposure of Super-Kamiokande

Kamiokande Collaboration, R. Matsumoto, K. Abe +229

We searched for proton decay via $p \to μ^{+} K^{0}$ in 0.37\,Mton $\cdot$ years of data collected between 1996 and 2018 from the Super-Kamiokande water Cherenkov experiment. The selection…

hep-ex2022★ 16 cited

Pre-Supernova Alert System for Super-Kamiokande

Kamiokande Collaboration, L. N. Machado, K. Abe +223

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 effici…

hep-ex2022★ 1 cited

Testing Non-Standard Interactions Between Solar Neutrinos and Quarks with Super-Kamiokande

Kamiokande Collaboration, P. Weatherly, K. Abe +268

Non-Standard Interactions (NSI) between neutrinos and matter affect the neutrino flavor oscillations. Due to the high matter density in the core of the Sun, solar neutrinos are sui…

hep-ex2021★ 6 cited

New Methods and Simulations for Cosmogenic Induced Spallation Removal in Super-Kamiokande-IV

Kamiokande Collaboration, S. Locke, A. Coffani +215

Radioactivity induced by cosmic muon spallation is a dominant source of backgrounds for $O (10)$ MeV neutrino interactions in water Cherenkov detectors. In particular, it…

hep-ex2020★ 43 cited

Neutron-Antineutron Oscillation Search using a 0.37 Megaton $\cdot$ Year Exposure of Super-Kamiokande

Kamiokande Collaboration, K. Abe, C. Bronner +196

As a baryon number violating process with $Δ B = 2$ , neutron-antineutron oscillation ( $n \to n ˉ$ ) provides a unique test of baryon number conservation. We have performed a search fo…

hep-ex2020★ 10 cited

Search for solar electron anti-neutrinos due to spin-flavor precession in the Sun with Super-Kamiokande-IV

Kamiokande Collaboration, K. Abe, C. Bronner +197

Due to a very low production rate of electron anti-neutrinos ( $ν ˉ_{e}$ ) via nuclear fusion in the Sun, a flux of solar $ν ˉ_{e}$ is unexpected. An appearance of $ν ˉ_{e}$ in solar…

hep-ex2020★ 132 cited

Search for proton decay via $p \to e^{+} π^{0}$ and $p \to μ^{+} π^{0}$ with an enlarged fiducial volume in Super-Kamiokande I-IV

Kamiokande Collaboration, A. Takenaka, K. Abe +211

We have searched for proton decay via $p \to e^{+} π^{0}$ and $p \to μ^{+} π^{0}$ modes with the enlarged fiducial volume data of Super-Kamiokande from April 1996 to May 2018, which correspond…

Search for the 16O(ppp)→13Cπ+π+e+ Decay Mode in Super-Kamiokande Using Machine Learning Techniques

Search for proton decay via p→e+η and p→μ+η with a 0.37 Mton-year exposure of Super-Kamiokande