K. Nakagiri

activity

20162024

K_{L} \to π^{0} ν ν

and

K_{L} \to π^{0} X^{0}

Decays at the J-PARC KOTO Experiment

176 citations · 616 across the 40 of their papers we have counts for

collaborators

46 papers

hep-ex2024★ 1 cited

Characterization of the optical model of the T2K 3D segmented plastic scintillator detector

S. Abe, I. Alekseev, T. Arai +128

The magnetised near detector (ND280) of the T2K long-baseline neutrino oscillation experiment has been recently upgraded aiming to satisfy the requirement of reducing the systemati…

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…

astro-ph.HE2023★ 52 cited

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

M. Harada, K. Abe, C. Bronner +238

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,…

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…

astro-ph.SR2022★ 2 cited

Searching for neutrinos from solar flares across solar cycles 23 and 24 with the Super-Kamiokande detector

K. Okamoto, K. Abe, Y. Hayato +242

Neutrinos associated with solar flares (solar-flare neutrinos) provide information on particle acceleration mechanisms during the impulsive phase of solar flares. We searched using…

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★ 3 cited

Search for the Pair Production of Dark Particles $X$ with $K_{L}^{0} \to X X$ , $X \to γ γ$

C. Lin, J. K. Ahn, J. M. Choi +39

We present the first search for the pair production of dark particles $X$ via $K_{L}^{0} \to X X$ with $X$ decaying into two photons using the data collected by the KOTO experiment. No s…

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…

astro-ph.HE2022★ 18 cited

Search for supernova bursts in Super-Kamiokande IV

Kamiokande collaboration, M. Mori, K. Abe +242

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 wo…

physics.ins-det2022★ 14 cited

SuperFGD prototype time resolution studies

I. Alekseev, T. Arihara, V. Baranov +87

The SuperFGD will be a part of the ND280 near detector of the T2K and Hyper Kamiokande projects, that will help to reduce systematic uncertainties related with neutrino flux and cr…

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-ex2021

Angular analysis of $B^{+} \to ρ^{+} ρ^{0}$ decays reconstructed in 2019-2020 Belle II data

Belle II collaboration, F. Abudinén, I. Adachi +549

We report on the first Belle II measurement of the branching fraction ( $B$ ) and longitudinal polarization fraction ( $f_{L}$ ) of $B^{+} \to ρ^{+} ρ^{0}$ decays. We reconstruct $B^+\…

hep-ex2021

Measurements of branching fractions and CP-violating charge asymmetries in multibody charmless $B$ decays reconstructed in 2019-2020 Belle II data

Belle II collaboration, F. Abudinén, I. Adachi +549

We report on measurements of branching fractions ( $B$ ) and CP-violating charge asymmetries ( $A_{CP}$ ) of multibody charmless $B$ decays reconstructed by the…

hep-ex2021

Measurement of the branching fraction for $B^{0} \to π^{0} π^{0}$ decays reconstructed in 2019-2020 Belle II data

Belle II Collaboration, F. Abudinén, I. Adachi +551

We report the first reconstruction of the $B^{0} \to π^{0} π^{0}$ decay mode at Belle II using samples of 2019 and 2020 data that correspond to 62.8 fb $^{- 1}$ of integrated luminos…

hep-ex2021

Rediscovery of $B^{0} \to J / ψ K_{L}^{0}$ at Belle II

Belle II Collaboration, F. Abudinén, I. Adachi +545

We present preliminary results on the reconstruction of the $B^{0} \to J / ψ K_{L}^{0}$ decay, where $J / ψ \to μ^{+} μ^{-}$ or $e^+e…

hep-ex2021★ 1 cited

Measurements of branching fractions and direct CP asymmetries in $B^{0} \to K^{+} π^{-}$ , $B^{+} \to K_{S}^{0} π^{+}$ and $B^{0} \to π^{+} π^{-}$ using 2019 and 2020 data

Belle II Collaboration, F. Abudinén, I. Adachi +549

We report updated measurements of branching fractions ( $B$ ) and CP-violating charge asymmetries ( $A_{CP}$ ) for charmless $B$ decays at Belle II, which opera…

Characterization of the optical model of the T2K 3D segmented plastic scintillator 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

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

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

Searching for neutrinos from solar flares across solar cycles 23 and 24 with the Super-Kamiokande detector

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

Search for the Pair Production of Dark Particles X with KL0​→XX, X→γγ

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

Search for supernova bursts in Super-Kamiokande IV

SuperFGD prototype time resolution studies

Pre-Supernova Alert System for Super-Kamiokande

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

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

Angular analysis of B+→ρ+ρ0 decays reconstructed in 2019-2020 Belle II data

Measurements of branching fractions and CP-violating charge asymmetries in multibody charmless B decays reconstructed in 2019-2020 Belle II data

Measurement of the branching fraction for B0→π0π0 decays reconstructed in 2019-2020 Belle II data

Rediscovery of B0→J/ψKL0​ at Belle II

Measurements of branching fractions and direct CP asymmetries in B0→K+π−, B+→KS0​π+ and B0→π+π− using 2019 and 2020 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 the Pair Production of Dark Particles $X$ with $K_{L}^{0} \to X X$ , $X \to γ γ$

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

Angular analysis of $B^{+} \to ρ^{+} ρ^{0}$ decays reconstructed in 2019-2020 Belle II data

Measurements of branching fractions and CP-violating charge asymmetries in multibody charmless $B$ decays reconstructed in 2019-2020 Belle II data

Measurement of the branching fraction for $B^{0} \to π^{0} π^{0}$ decays reconstructed in 2019-2020 Belle II data

Rediscovery of $B^{0} \to J / ψ K_{L}^{0}$ at Belle II

Measurements of branching fractions and direct CP asymmetries in $B^{0} \to K^{+} π^{-}$ , $B^{+} \to K_{S}^{0} π^{+}$ and $B^{0} \to π^{+} π^{-}$ using 2019 and 2020 data