papers

Publications (15)

physics.ins-det2025

Pulse Shape Discrimination in JSNS

T. Dodo, M. K. Cheoun, J. H. Choi +51

JSNS (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) is an experiment that is searching for sterile neutrinos via the observation of $\barν_μ \rightarrow…

physics.ins-det2025

PMT calibration for the JSNS2-II far detector with an embedded LED system

Jisu Park, M. K. Cheoun, J. H. Choi +53

The JSNS2-II (the second phase of JSNS2, J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) is an experiment aimed at searching for sterile neutrinos. This experim…

hep-ex2022

Characterization of the correlated background for a sterile neutrino search using the first dataset of the JSNS experiment

Y. Hino, S. Ajimura, M. K. Cheoun +62

JSNS (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) is an experiment that is searching for sterile neutrinos via the observation of $\barν_μ \to \barν_…

hep-ex2025

Evaluation of the performance of the event reconstruction algorithms in the JSNS experiment using a Cf calibration source

D. H. Lee, M. K. Cheoun, J. H. Choi +50

JSNS searches for short baseline neutrino oscillations with a baseline of 24~meters and a target of 17~tonnes of the Gd-loaded liquid scintillator. The correct algorithm on the…

physics.ins-det2021

The JSNS^2 Detector

S. Ajimura, M. Botran, J. H. Choi +63

The JSNS^2 (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) experiment aims to search for oscillations involving a sterile neutrino in the eV^2 mass-splitting r…

hep-ex2026

First results from the search for an excess of events in JSNS

D. H. Lee, S. Ajimura, A. Antonakis +79

The JSNS (J-PARC Sterile Neutrino Search at the J-PARC Spallation Neutron Source) experiment at the Material and Life Science Facility (MLF) of J-PARC is designed to directly t…

hep-ex2024

Study on the accidental background of the JSNS experiment

D. H. Lee, S. Ajimura, M. K. Cheoun +55

JSNS (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) is an experiment which searches for sterile neutrinos via the observation of $\barν_μ \to \barν_{e}…

hep-ex2020

Proposal: JSNS-II

S. Ajimura, M. Botran, J. H. Choi +64

This article describes the goal and expected sensitivity of the JSNS-II experiment at J-PARC Materials and Life Science Experimental Facility (MLF). The JSNS-II experiment…

hep-ex2025

The first JSNS measurement of electron neutrino flux using reaction

T. Dodo, M. K. Cheoun, J. H. Choi +47

JSNS (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) is an experiment searching for sterile neutrinos through the observation of $\barν_μ \rightarrow \ba…

physics.ins-det2020

The JSNS data acquisition system

J. S. Park, S. Ajimura, M. Botran +58

The JSNS (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) experiment aims to search for neutrino oscillations over a 24 m short baseline at J-PARC. The JS…

hep-ex2023

The acrylic vessel for JSNS-II neutrino target

C. D. Shin, S. Ajimura, M. K. Cheoun +57

The JSNS (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) is an experiment designed for the search for sterile neutrinos. The experiment is currently at t…

physics.ins-det2021

Slow control and monitoring system at the JSNS

J. S. Park, S. Ajimura, M. Botran +59

The JSNS experiment is aimed to search for sterile neutrino oscillations using a neutrino beam from muon decays at rest. The JSNS detector contains 17 tons of 0.1\% gadolin…

physics.ins-det2025

Muon tagging with Flash ADC waveform baselines

D. H. Lee, M. K. Cheoun, J. H. Choi +54

This manuscript describes an innovative method to tag the muons using the baseline information of the Flash ADC (FADC) waveform of PMTs in the JSNS1 (J-PARC Sterile Neutrino Search…

hep-ex2025

First Measurement of Missing Energy Due to Nuclear Effects in Monoenergetic Neutrino Charged Current Interactions

E. Marzec, S. Ajimura, A. Antonakis +80

We present the first measurement of the missing energy due to nuclear effects in monoenergetic, muon neutrino charged-current interactions on carbon, originating from $K^+ \rightar…

physics.ins-det2020

Performance of PMTs for the JSNS2 experiment

J. S. Park, H. Furuta, T. Maruyama +58

The JSNS (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) experiment aims to search for neutrino oscillations over a 24\,m short baseline at J-PARC. The J…