Y. Onuki

ORCID: 0000-0002-1646-6847
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About
Contact & Profiles
Research Areas
  • Particle physics theoretical and experimental studies
  • Quantum Chromodynamics and Particle Interactions
  • High-Energy Particle Collisions Research
  • Particle Detector Development and Performance
  • Radiation Detection and Scintillator Technologies
  • Dark Matter and Cosmic Phenomena
  • Neutrino Physics Research
  • Particle Accelerators and Free-Electron Lasers
  • Computational Physics and Python Applications
  • Black Holes and Theoretical Physics
  • CCD and CMOS Imaging Sensors
  • Atomic and Subatomic Physics Research
  • Action Observation and Synchronization
  • Medical Imaging Techniques and Applications
  • Neural dynamics and brain function
  • Neural and Behavioral Psychology Studies
  • Sleep and Wakefulness Research
  • Superconducting Materials and Applications
  • Neuroscience and Neuropharmacology Research
  • Advanced NMR Techniques and Applications
  • Vestibular and auditory disorders
  • Radiation Effects in Electronics
  • Motor Control and Adaptation
  • Genetic Neurodegenerative Diseases
  • Electron and X-Ray Spectroscopy Techniques

Jichi Medical University
2018-2025

Jichi Medical University Hospital
2022-2025

The University of Tokyo
2015-2024

Université de Strasbourg
2022-2024

Centre National de la Recherche Scientifique
2022-2024

Osaka Metropolitan University
2023

University of Miyazaki
2023

Kyoto University
2023

Kobe University
2023

Royal Netherlands Academy of Arts and Sciences
2013-2022

We report the observation of two narrow structures in mass spectra pi+-Y(nS) (n=1,2,3) and pi+-hb(mP)(m$ (m=1,2) pairs that are produced association with a single charged pion Y(5S) decays. The measured masses widths averaged over five final states M_1=(10607.2+-2.0) MeV/c2, Gamma_1=(18.4+-2.4) MeV M_2=(10652.2+-1.5) Gamma_2=(11.5+-2.2) MeV. results obtained 121.4 1/fb data sample collected Belle detector vicinity resonance at KEKB asymmetric-energy e+e- collider.

10.1103/physrevlett.108.122001 article EN publisher-specific-oa Physical Review Letters 2012-03-20

We report a measurement of the process $\ensuremath{\gamma}{\ensuremath{\gamma}}^{*}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{0}$ with $759\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ data sample recorded Belle detector at KEKB asymmetric-energy ${e}^{+}{e}^{\ensuremath{-}}$ collider. The pion transition form factor, $F({Q}^{2})$, is measured for kinematical region $4\text{ }{\mathrm{GeV}}^{2}\ensuremath{\lesssim}{Q}^{2}\ensuremath{\lesssim}40\text{ }{\mathrm{GeV}}^{2}$, where...

10.1103/physrevd.86.092007 article EN publisher-specific-oa Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D, Particles, fields, gravitation, and cosmology 2012-11-09

We report the first observations of spin-singlet bottomonium states hb(1P) and hb(2P). The are produced in reaction e+e−→hb(nP)π+π− using a 121.4 fb−1 data sample collected at energies near Υ(5S) resonance with Belle detector KEKB asymmetric-energy e+e− collider. determine M[hb(1P)]=(9898.2+1.1+1.0−1.0−1.1) MeV/c2 M[hb(2P)]=(10 259.8±0.6+1.4−1.0) MeV/c2, which correspond to P-wave hyperfine splittings ΔMHF=(+1.7±1.5) (+0.5+1.6−1.2) respectively. significances hb(2P) 5.5σ 11.2σ, find that...

10.1103/physrevlett.108.032001 article EN publisher-specific-oa Physical Review Letters 2012-01-18

We report a study of $B\to (J/\psi \gamma) K$ and (\psi' \gamma)K$ decay modes using $772\times 10^{6}$ $B\bar{B}$ events collected at the \Upsilon(4S)$ resonance with Belle detector KEKB energy-asymmetric $e^+ e^-$ collider. observe $X(3872) \to J/\psi \gamma$ first evidence for $\chi_{c2} in (X_{c\bar{c}}\gamma) decays, while search \psi' no significant signal is found. measure branching fractions, $\mathcal{B}(B^{\pm} X(3872) K^{\pm}) \mathcal{B}(X(3872) J/\psi\gamma)$ $=$...

10.1103/physrevlett.107.091803 article EN publisher-specific-oa Physical Review Letters 2011-08-26

In patients with aromatic l-amino acid decarboxylase (AADC) deficiency, a decrease in catecholamines and serotonin levels the brain leads to developmental delay movement disorders. The beneficial effects of gene therapy from 1 8 years age homogeneous severity disease have been reported Taiwan. We conducted an open-label phase 1/2 study population including adolescent different degrees severity. Six were enrolled: four males (ages 4, 10, 15 19 years) one female (age 12 severe phenotype who...

10.1093/brain/awy331 article EN cc-by-nc Brain 2018-12-23

The hippocampus and cerebellum play a role in the process of temporal memory formation. interaction between these brain regions during prediction motor executions nevertheless remains unclear. Using fMRI, we show here that are co-activated timing-dependent task requires accurate timing finger movements following preceding visual cues, but not 2 control tasks: reaction requiring identical coordination individual combined fingers without predicting timing, or an imagery task. In addition,...

10.1093/cercor/bht221 article EN Cerebral Cortex 2013-08-22

We search for lepton-flavor-violating and lepton-number-violating tau decays into a lepton (l = electron or muon) two charged mesons (h, h' pion Kaon) using 854 fb^{-1} of data collected with the Belle detector at KEKB asymmetric-energy e^+e^- collider. obtain 90% confidence level upper limits on to lhh' branching fractions in range (2.0-8.4)*10^{-8}. These results improve upon our previously published by factors about 1.8 average.

10.1016/j.physletb.2013.01.032 article EN cc-by Physics Letters B 2013-01-23

<title>Abstract</title> Objective This study aimed to evaluate the dynamics of neutrophil-to-lymphocyte ratio (NLR) during initial hospitalization patients with eating disorders (EDs) and assess its potential as a biomarker for monitoring disease severity treatment response. Methods A retrospective chart review was conducted 55 aged ≤ 16 years diagnosed anorexia nervosa or avoidant/restrictive food intake disorder admitted Jichi Medical University Hospital between 2015 2021. Sociodemographic...

10.21203/rs.3.rs-5919028/v1 preprint EN cc-by Research Square (Research Square) 2025-02-04

Abstract Targeting a peak luminosity of 6 × 10 35 cm -2 s -1 , the Belle II experiment at SuperKEKB in Japan is considering an upgrade its interaction region. This involves vertex detector, which will be replaced by new fully pixelated detector (VTX). A monolithic CMOS pixel sensor named OBELIX (Optimized BELle pIXel) proposed to used VTX. Based on existing TJ-Monopix2 chip initially developed for ATLAS Inner Tracker (ITk) upgrade, designed 180 nm process with improved matrix and additional...

10.1088/1748-0221/20/02/c02046 article EN Journal of Instrumentation 2025-02-01

We have made a precise measurement of the absolute branching fractions Bs->Ds(*)+ Ds(*)- decays using 121.4 fb-1 data recorded by Belle experiment running on Upsilon(5S) resonance. The results are B(Bs0->Ds+ Ds-) = (0.58 +0.11 -0.09 +-0.13)%, B(Bs0->Ds*+- Ds-+) (1.8 +-0.2 +-0.4)%, and B(Bs0->Ds*+ Ds*-) (2.0 +-0.3 +-0.5)%; sum is B(Bs0->Ds(*)+ (4.3 +-0.4 +-1.0)%. Assuming saturates to CP-even final states, fraction constrains ratio Delta(Gamma_s)/cos(phi_s), where Delta(Gamma_s) difference in...

10.1103/physrevd.87.031101 article EN publisher-specific-oa Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D, Particles, fields, gravitation, and cosmology 2013-02-12

Based on neuroimaging data, the insula is considered important for people to empathize with pain of others. Here, we present intracranial electroencephalographic (iEEG) recordings and single-cell from human while seven epilepsy patients rated intensity a woman’s painful experiences seen in short movie clips. Pain had be deduced seeing facial expressions or hand being slapped by belt. We found activity broadband 20–190 Hz range correlated trial-by-trial perceived both types stimuli. Within...

10.7554/elife.75197 article EN cc-by eLife 2022-11-03

We observe evidence for CP violation in the decay D+ → K(S)(0)π+ using a data sample with an integrated luminosity of 977 fb(-1) collected by Belle detector at KEKB e+ e- asymmetric-energy collider. The asymmetry is measured to be (-0.363±0.094±0.067)%, which 3.2 standard deviations away from zero, and consistent expected due neutral kaon final state.

10.1103/physrevlett.109.021601 article EN publisher-specific-oa Physical Review Letters 2012-07-11

We report the measurements of branching fractions and CP violation asymmetries in $B^0 \to \phi K^{*}$ decays obtained an angular analysis using full data sample $772 \times 10^6 B\bar{B}$ pairs collected at $\Upsilon(4S)$ resonance with Belle detector KEKB asymmetric-energy $e^+ e^-$ collider. perform a partial wave to distinguish among scalar [$B^0 \phi(K\pi)^{*}_{0}$], vector K^{*}(892)^{0}$] tensor K^{*}_{2}(1430)^{0}$] components, determine corresponding be $\mathcal{B}[B^0...

10.1103/physrevd.88.072004 article EN Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D, Particles, fields, gravitation, and cosmology 2013-10-10

Growing evidence suggests that sleep is important for procedural learning, but few studies have investigated the effect of on temporal aspects motor skill learning. We assessed a 90-min day-time nap learning timing task, using 2 adaptations serial interception sequence (SISL) task. Forty-two right-handed participants performed task before and after period or wake. Electroencephalography (EEG) was recorded throughout. The consisted sequential spatial pattern according to different conditions,...

10.1037/bne0000146 article EN Behavioral Neuroscience 2016-05-24

Many daily life activities demand precise integration of spatial and temporal information sensory inputs followed by appropriate motor actions. This type is carried out in part the cerebellum, which has been postulated to play a central role learning timing movements. Cerebellar damage due atrophy or lesions may compromise forward-model processing, both cues are used achieve prediction for future states. In present study we sought further investigate cerebellar contribution predictive...

10.1371/journal.pone.0162042 article EN cc-by PLoS ONE 2016-08-29

Abstract Aromatic l-amino acid decarboxylase (AADC) is an essential dopamine-synthesizing enzyme. In children with AADC deficiency, the gene delivery of into putamen, which functionally interacts cortical regions, was found to improve motor function and ameliorate dystonia. However, how restoration dopamine in putamen association cortico-putaminal networks leads therapeutic effects remains unclear. Here, we examined neuroimaging data eight patients deficiency (five males three females, age...

10.1093/braincomms/fcab078 article EN cc-by Brain Communications 2021-01-01

The action observation network (AON) has been extensively studied using short, isolated motor acts. How activity in the is altered when these acts are embedded meaningful sequences of actions remains poorly understood. Here we utilized intracranial electrocorticography to characterize how exchange information across key nodes AON—the precentral, supramarginal, and visual cortices—is affected by such embedding resulting predictability. We found more top-down beta oscillation from precentral...

10.1016/j.celrep.2023.113432 article EN cc-by Cell Reports 2023-11-01

We report measurements of branching fractions for B --> K pi and decays based on a data sample 449 x 10(6) BB[over] pairs collected at the Upsilon(4S) resonance with Belle detector KEKB asymmetric-energy e(+)e(-) collider. also measure ratios partial widths B-->Kpi decays, namely R(c) identical 2Gamma(B(+) K(+) pi(0))/Gamma(B(+) K(0) pi(+)) = 1.08+/-0.06+/-0.08 R(n) Gamma(B(0) pi(-))/2 pi(0)) 1.08+/-0.08+/-0.08, where first second errors are statistical systematic, respectively. These...

10.1103/physrevlett.99.121601 article EN Physical Review Letters 2007-09-18

We report a study of the decay ${B}^{0}\ensuremath{\rightarrow}D{K}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ followed by $D\ensuremath{\rightarrow}{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$, where $D$ indicates ${D}^{0}$ or ${\overline{D}}^{0}$. reconstruct $D{K}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ state in phase space corresponding to $D{K}^{*}(892{)}^{0}$. The $CP$-violating angle ${\ensuremath{\phi}}_{3}$ affects its rate via interference between $b\ensuremath{\rightarrow}u$ and...

10.1103/physrevd.86.011101 article EN publisher-specific-oa Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D, Particles, fields, gravitation, and cosmology 2012-07-03

Abstract The silicon vertex detector (SVD) is installed at the heart of Belle II experiment, taking data high-luminosity B-Factory SuperKEKB since 2019. SVD a four-layer double-sided strip with tracking and particle-identification capabilities. In this paper, we report on performance reconstruction hits. has shown stable above-99% hit efficiency, large signal-to-noise in all sensors beginning taking. Cluster position time resolution have been measured 2020 2022 show excellent stability....

10.1088/1748-0221/19/02/c02038 article EN cc-by Journal of Instrumentation 2024-02-01
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