K. Nakamura

activity

20042026

most citedEvidence for muon neutrino oscillation in an accelerator-based experiment

456 citations · 1.6k across the 48 of their papers we have counts for

collaborators

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29 papers · 1 filter

hep-ex2026

First observation of electron antineutrinos from nuclear reactors at Super-Kamiokande

K. Abe, Y. Asaoka, M. Harada +244

In 2020, Super-Kamiokande entered the SK-Gd phase, improving its sensitivity to low-energy electron antineutrinos through the detection of neutrons captured on gadolinium dissolved…

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-ex2026

Search for proton decay into a single charged antilepton and a massless invisible particle using the full pure water data set of Super-Kamiokande

Kamiokande Collaboration, Y. M. Liu, K. Terada +244

A search for proton decay via $p \to l^{+} + X$ , where $l^{+}$ is a positively charged lepton and $X$ is an invisible, massless, neutral particle, was performed using a 401~kt…

hep-ex2026

First double-differential measurement of pionless charged-current muon neutrino interactions using kinematic imbalance observables on carbon and oxygen with the T2K experiment

K. Abe, S. Abe, H. Adhikary +402

We report the first measurement of muon-neutrino charged-current cross section as a function of kinematic imbalance (KI) observables on oxygen with no pions and at least one proton…

hep-ex2026

Signal selection and model-independent extraction of pionless charged-current muon neutrino cross section using double-differential kinematic imbalance observables on carbon and oxygen with the T2K experiment

K. Abe, S. Abe, H. Adhikary +402

We present the first joint measurement of muon neutrino CC $0 π N p$ interactions on carbon and oxygen targets, in two double-differential kinematic imbalance (KI) observable spaces, $…

hep-ex2026

Constraining Neutrino Interaction Uncertainties for Neutrino Oscillation Measurements at the T2K Experiment

K. Abe, S. Abe, H. Adhikary +438

In the context of neutrino oscillation measurements from the T2K experiment, the off-axis near detector ND280 plays a crucial role in constraining the incoming neutrino flux and ne…

hep-ex2026

Search for proton decay via $p \to e^{+} π^{0} π^{0}$ and $p \to μ^{+} π^{0} π^{0}$ in 0.401 megaton-years exposure of Super-Kamiokande I-V

Kamiokande Collaboration, K. Abe, S. Abe +310

We searched for proton decay via $p \to e^{+} π^{0} π^{0}$ and $p \to μ^{+} π^{0} π^{0}$ in 0.401 megaton-years of data collected in all pure water detector phases of Super-Kamiokande…

hep-ex2025

Search for nucleon decay via $p \to ν π^{+}$ and $n \to ν π^{0}$ in 0.484 Mton-year of Super-Kamiokande data

Kamiokande Collaboration, S. Jung, K. Abe +243

We present the results of searches for nucleon decays via $p \to ν π^{+}$ and $n \to ν π^{0}$ using a 0.484 Mt $\cdot$ yr exposure of Super-Kamiokande I-V data covering the…

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-ex2024★ 1 cited

Measurements of the charge ratio and polarization of cosmic-ray muons with the Super-Kamiokande detector

H. Kitagawa, T. Tada, K. Abe +253

We present the results of the charge ratio ( $R$ ) and polarization ( $P_{0}^{μ}$ ) measurements using the decay electron events collected from 2008 September to 2022 June by the Super-K…

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-ex2023★ 6 cited

Measurements of the $ν_{μ}$ and $ν ˉ_{μ}$ -induced Coherent Charged Pion Production Cross Sections on $^{12} C$ by the T2K experiment

K. Abe, N. Akhlaq, R. Akutsu +380

We report an updated measurement of the $ν_{μ}$ -induced, and the first measurement of the $ν ˉ_{μ}$ -induced coherent charged pion production cross section on $^{12} C$ nuclei in the T…

hep-ex2023

Updated T2K measurements of muon neutrino and antineutrino disappearance using 3.6 $\times$ 10 $^{21}$ protons on target

K. Abe, N. Akhlaq, R. Akutsu +406

Muon neutrino and antineutrino disappearance probabilities are identical in the standard three-flavor neutrino oscillation framework, but CPT violation and non-standard interaction…

hep-ex2023★ 17 cited

First measurement of muon neutrino charged-current interactions on hydrocarbon without pions in the final state using multiple detectors with correlated energy spectra at T2K

K. Abe, N. Akhlaq, R. Akutsu +401

This paper reports the first measurement of muon neutrino charged-current interactions without pions in the final state using multiple detectors with correlated energy spectra at T…

hep-ex2023★ 126 cited

Measurements of neutrino oscillation parameters from the T2K experiment using $3.6 \times 1 0^{21}$ protons on target

The T2K Collaboration, K. Abe, N. Akhlaq +397

The T2K experiment presents new measurements of neutrino oscillation parameters using $19.7 (16.3) \times 1 0^{20}$ protons on target (POT) in (anti-)neutrino mode at the far detector…

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★ 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-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★ 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-ex2019★ 10 cited

Measurement of the $ν_{μ}$ charged-current cross sections on water, hydrocarbon, iron, and their ratios with the T2K on-axis detectors

K. Abe, R. Akutsu, A. Ali +314

We report a measurement of the flux-integrated $ν_{μ}$ charged-current cross sections on water, hydrocarbon, and iron in the T2K on-axis neutrino beam with a mean neutrino energy of…

First observation of electron antineutrinos from nuclear reactors at Super-Kamiokande

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

Search for proton decay into a single charged antilepton and a massless invisible particle using the full pure water data set of Super-Kamiokande

First double-differential measurement of pionless charged-current muon neutrino interactions using kinematic imbalance observables on carbon and oxygen with the T2K experiment

Signal selection and model-independent extraction of pionless charged-current muon neutrino cross section using double-differential kinematic imbalance observables on carbon and oxygen with the T2K experiment

Constraining Neutrino Interaction Uncertainties for Neutrino Oscillation Measurements at the T2K Experiment

Search for proton decay via p→e+π0π0 and p→μ+π0π0 in 0.401 megaton-years exposure of Super-Kamiokande I-V

Search for nucleon decay via p→νπ+ and n→νπ0 in 0.484 Mton-year of Super-Kamiokande data

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

Measurements of the charge ratio and polarization of cosmic-ray muons with the Super-Kamiokande detector

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

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

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

Measurements of the νμ​ and νˉμ​-induced Coherent Charged Pion Production Cross Sections on 12C by the T2K experiment

Updated T2K measurements of muon neutrino and antineutrino disappearance using 3.6 × 1021 protons on target

First measurement of muon neutrino charged-current interactions on hydrocarbon without pions in the final state using multiple detectors with correlated energy spectra at T2K

Measurements of neutrino oscillation parameters from the T2K experiment using 3.6×1021 protons on target

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

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

Search for proton decay via p→μ+K0 in 0.37 megaton-years exposure of Super-Kamiokande

Pre-Supernova Alert System for Super-Kamiokande

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

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

Measurement of the νμ​ charged-current cross sections on water, hydrocarbon, iron, and their ratios with the T2K on-axis detectors

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

Search for proton decay via $p \to e^{+} π^{0} π^{0}$ and $p \to μ^{+} π^{0} π^{0}$ in 0.401 megaton-years exposure of Super-Kamiokande I-V

Search for nucleon decay via $p \to ν π^{+}$ and $n \to ν π^{0}$ in 0.484 Mton-year of Super-Kamiokande data

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

Measurements of the $ν_{μ}$ and $ν ˉ_{μ}$ -induced Coherent Charged Pion Production Cross Sections on $^{12} C$ by the T2K experiment

Updated T2K measurements of muon neutrino and antineutrino disappearance using 3.6 $\times$ 10 $^{21}$ protons on target

Measurements of neutrino oscillation parameters from the T2K experiment using $3.6 \times 1 0^{21}$ protons on target

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

Measurement of the $ν_{μ}$ charged-current cross sections on water, hydrocarbon, iron, and their ratios with the T2K on-axis detectors