A5056635225- Particle accelerators and beam dynamics
- Muon and positron interactions and applications
- Neutrino Physics Research
- Particle Accelerators and Free-Electron Lasers
- Particle physics theoretical and experimental studies
- Astrophysics and Cosmic Phenomena
- Particle Detector Development and Performance
- Superconducting Materials and Applications
- Plasma Diagnostics and Applications
- Dark Matter and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Gyrotron and Vacuum Electronics Research
- Magnetic confinement fusion research
- T-cell and Retrovirus Studies
- Atomic and Subatomic Physics Research
- Vector-Borne Animal Diseases
- Crystallization and Solubility Studies
- Animal Disease Management and Epidemiology
- Atomic and Molecular Physics
- X-ray Diffraction in Crystallography
- Electrostatic Discharge in Electronics
- Geophysics and Gravity Measurements
- Antenna Design and Analysis
- Hepatitis B Virus Studies
- Organ Transplantation Techniques and Outcomes
High Energy Accelerator Research Organization
2014-2023
Ibaraki National College of Technology
2022
National Institute of Technology, Kagoshima College
2022
Hitachi (Japan)
2022
National Institute of Technology, Nagano College
2022
Nagaoka University
2022
Utsunomiya University
2022
Japan Proton Accelerator Research Complex
2018-2021
Mitsubishi Electric (Japan)
2019
Tohoku University
2013-2015
We present results from the first phase of KamLAND-Zen double-beta decay experiment, corresponding to an exposure 89.5 kg yr $^{136}\mathrm{Xe}$. obtain a lower limit for neutrinoless half-life ${T}_{1/2}^{0\ensuremath{\nu}}>1.9\ifmmode\times\else\texttimes\fi{}{10}^{25}\text{ }\text{ }\mathrm{yr}$ at 90% C.L. The combined and EXO-200 give ${T}_{1/2}^{0\ensuremath{\nu}}>3.4\ifmmode\times\else\texttimes\fi{}{10}^{25}\text{ C.L., which corresponds Majorana neutrino mass...
The recent long-term shutdown of Japanese nuclear reactors has resulted in a significantly reduced reactor ν¯e flux at KamLAND. This running condition provides unique opportunity to confirm and constrain backgrounds for the oscillation analysis. data set also improved sensitivity other signals, particular ν¯e’s produced β-decays from U238 Th232 within Earth’s interior, whose energy spectrum overlaps with that ν¯e’s. Including constraints on θ13 accelerator short-baseline neutrino...
This paper introduces a new approach to measure the muon magnetic moment anomaly |$a_{\mu} = (g-2)/2$| and electric dipole (EDM) |$d_{\mu}$| at J-PARC facility. The goal of our experiment is |$a_{\mu}$| using an independent method with factor 10 lower momentum, 20 smaller diameter storage-ring solenoid compared previous ongoing |$g-2$| experiments unprecedented quality storage field. Additional significant differences from present experimental include 1000 transverse emittance beam...
The SciBooNE and MiniBooNE collaborations report the results of a ν_μdisappearance search in Δm^2 region 0.5-40 eV^2. neutrino rate as measured by tracking detectors is used to constrain at Cherenkov detector first joint analysis data from both collaborations. Two separate analyses combined samples set 90% confidence level (CL) limits on eV^2 region, with an improvement over previous experimental constraints between 10 30
The SciBooNE Collaboration reports a measurement of inclusive charged current interactions muon neutrinos on carbon with an average energy 0.8 GeV using the Fermilab Booster Neutrino Beam. We compare our two neutrino interaction simulations: NEUT and NUANCE. rates (product flux cross section) are extracted by fitting kinematics, precision 6-15% for dependent 3% integrated analyses. also extract CC sections from observed rates, 10-30% 8% This is first section around 1 GeV. These results can...
We report a measurement of the neutrino-electron elastic scattering rate 862 keV 7Be solar neutrinos based on 165.4 kton-day exposure KamLAND. The observed is 582 +/- 90 (kton-day)^-1, which corresponds to neutrino flux (3.26 0.50) x 10^9 cm^-2s^-1, assuming pure electron flavor flux. Comparing this with standard model prediction and further three mixing, nu_e survival probability 0.66 0.14 determined from KamLAND data. Utilizing global oscillation analysis, we obtain total (5.82 0.98)...
The SciBooNE Collaboration has performed a search for charged current coherent pion production from muon neutrinos scattering on carbon, ${\ensuremath{\nu}}_{\ensuremath{\mu}}^{12}\mathrm{C}\ensuremath{\rightarrow}{\ensuremath{\mu}}^{\ensuremath{-}}^{12}\mathrm{C}{\ensuremath{\pi}}^{+}$, with two distinct data samples. No evidence is observed. We set 90% confidence level upper limits the cross section ratio of to total at $0.67\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}2}$ mean...
The MiniBooNE and SciBooNE collaborations report the results of a joint search for short baseline disappearance ${\overline{\ensuremath{\nu}}}_{\ensuremath{\mu}}$ at Fermilab's Booster Neutrino Beamline. Cherenkov detector tracking observe antineutrinos from same beam, therefore combined analysis their data sets serves to partially constrain some flux cross section uncertainties. Uncertainties in ${\ensuremath{\nu}}_{\ensuremath{\mu}}$ background were constrained by neutrino measurements...
Emission of muonium (|$\mu ^+e^-$|) atoms from a laser-processed aerogel surface into vacuum was studied for the first time. Laser ablation used to create hole-like regions with diameter about 270 |$\mu $|m in triangular pattern hole separation range 300–500 $|m. The emission probability sample is at least eight times higher than uniform one.
This paper demonstrates real-time short-term traffic flow prediction through distributed fiber-optic sensing (DFOS) and data assimilation with a stochastic cell-automata-based model. Traffic congestion on expressways is severe issue. To alleviate its negative impacts, it necessary to optimize prior becoming serious congestion. For this purpose, promising. However, conventional monitoring apparatus used in methods faces technical issue due the sparsity data. overcome for realizing prediction,...
Currently, hepatitis B virus (HBV) re-infection after liver transplantation (LT) can be almost completely suppressed by the administration of HBV reverse transcriptase inhibitors and immunoglobulins. However, transplantation, there is no indicator replication because tests for serum surface antigen HBV-DNA are both negative. Therefore, criteria reducing discontinuing these precautions unclear. In this study, we examined core-related (HBcrAg) intrahepatic covalently closed circular DNA...
We have developed an interdigital H-mode (IH) drift-tube linac (DTL) design with alternative phase focusing (APF) scheme for a muon linac, in order to measure the anomalous magnetic moment and electric dipole (EDM) of muons at Japan Proton Accelerator Research Complex (J-PARC). The IH-DTL accelerates from $\ensuremath{\beta}=v/c=0.08$ 0.28 operational frequency 324 MHz. output beam emittances are calculated as $0.315\ensuremath{\pi}$ $0.195\ensuremath{\pi}\text{ }\text{ }\mathrm{mm}\text{...
The SciBooNE Collaboration reports a measurement of neutral current coherent pion production on carbon by muon neutrino beam with average energy 0.8 GeV. separation from inclusive has been improved detecting recoil protons resonant production. We measure the ratio to total charged cross sections be (1.16 +/- 0.24) x 10-2. is calculated 0.14+0.30 -0.28, using our published measurement.
The SciBooNE Collaboration reports inclusive neutral current pion production by a muon neutrino beam on polystyrene target (${\mathrm{C}}_{8}{\mathrm{H}}_{8}$). We obtain $(7.7\ifmmode\pm\else\textpm\fi{}0.5(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.5(\mathrm{sys}))\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}2}$ as the ratio of to total charged cross section; mean energy neutrinos producing detected pions is 1.1 GeV. result agrees with Rein-Sehgal model implemented in our...
KamLAND-Zen reports on a preliminary search for neutrinoless double-beta decay with 136Xe based 114.8 live-days after the purification of xenon loaded liquid scintillator. In this data, problematic 110mAg background peak identified in previous searches is reduced by more than factor 10. By combining pre- and post-purification we obtain lower limit 0νββ half-life T1/20ν>2.6×1025 yr at 90% C.L. The sensitivity will be enhanced additional low data purification. Prospects further improvements...
Power upgrades of accelerators and the development new beamlines have prompted high-precision measurements to be updated reveal phenomena. Several operate in mega-watt regime, a number experiments are planned for future, search evidence physics beyond standard model by investigating events relevant secondary particles. will constructed based on concepts high-power proton drivers, i.e., meson factories. These transport particles, namely muons, with higher efficiency than conventional...
Though Standard Model (SM) for elementary particle physics was complete by the Higgs observation at LHC, many problems such as dark matter and baryon-antibaryon asymmetry of Universe still remain unsolved. These questions indicate that new (NP) will emerge higher energy scale. One indications NP up to now is in muon anomalous magnetic moment (g-2); there 3.3σ discrepancy between SM prediction measurement E821 experiment [1] with an accuracy 0.54 ppm. other windows electric dipole (EDM);...
The SciBooNE Collaboration reports K+ production cross section and rate measurements using high energy daughter muon neutrino scattering data off the SciBar polystyrene (C8H8) target in detector. mesons are produced by 8 GeV protons striking a beryllium Fermilab Booster Neutrino Beam line (BNB). Using observed antineutrino events SciBooNE, we measure d2{\sigma}/dpd{\Omega} = (5.34 \times 0.76) mb/(GeV/c sr) for p + Be -> X at mean of 3.9 angle (with respect to proton beam direction) 3.7...