Y. Yamaguchi

ORCID: 0000-0002-3725-4800
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Particle physics theoretical and experimental studies
  • High-Energy Particle Collisions Research
  • Quantum Chromodynamics and Particle Interactions
  • Particle Detector Development and Performance
  • Dark Matter and Cosmic Phenomena
  • Computational Physics and Python Applications
  • Cosmology and Gravitation Theories
  • Neutrino Physics Research
  • Radiation Detection and Scintillator Technologies
  • Nuclear physics research studies
  • Astrophysics and Cosmic Phenomena
  • Black Holes and Theoretical Physics
  • Magnetic confinement fusion research
  • Distributed and Parallel Computing Systems
  • Particle Accelerators and Free-Electron Lasers
  • Nuclear reactor physics and engineering
  • Atomic and Subatomic Physics Research
  • Nuclear Physics and Applications
  • Medical Imaging Techniques and Applications
  • Ionosphere and magnetosphere dynamics
  • Particle accelerators and beam dynamics
  • Plasma Diagnostics and Applications
  • Radiation Dose and Imaging
  • Quantum, superfluid, helium dynamics
  • Superconducting Materials and Applications

The University of Tokyo
2015-2025

High Energy Accelerator Research Organization
1987-2025

Tokyo Medical University
2025

Shanghai Institute for Science of Science
2024-2025

Stony Brook University
2015-2024

Tokyo Institute of Technology
2015-2024

Fermi National Accelerator Laboratory
2024

University of Chicago
2024

Osaka University
1991-2024

United Nations University Institute for Sustainability and Peace
2023-2024

Measurements of the semileptonic weak-neutral-current reactions νμp→νμp and ν¯μp→ν¯μp are presented. The experiment was performed using a 170-metric-ton high-resolution target detector in BNL wide-band neutrino beam. High-statistics samples yield absolute differential cross sections dσ(νμp)/dQ2 dσ(ν¯μp)/dQ2. A measurement axial-vector form factor GA(Q2) is also results good agreement with standard model SU(2)×U(1). parameter sin2thetaW determined to be...

10.1103/physrevd.35.785 article EN Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 1987-02-01

We perform the first direct mass measurements of neutron-rich calcium isotopes beyond neutron number 34 at RIKEN Radioactive Isotope Beam Factory by using time-of-flight magnetic-rigidity technique. The atomic excesses ^{55-57}Ca are determined for time to be -18650(160), -13510(250), and -7370(990) keV, respectively. examine emergence magicity N=34 based on new masses. masses provide experimental evidence appearance a sizable energy gap between 2p_{1/2} 1f_{5/2} orbitals in ^{54}Ca,...

10.1103/physrevlett.121.022506 article EN publisher-specific-oa Physical Review Letters 2018-07-11

Background: Early detection of pancreatic cancer using existing tumor markers is challenging, and novel biomarkers are needed. Apolipoprotein A2 (APOA2), which not directly produced by tumors, may help detect through mechanisms distinct from carbohydrate antigen 19-9 (CA 19-9). This study aimed to evaluate the diagnostic performance APOA2-isoform (APOA2-i) Index in patients with cancer. Methods: Serum levels APOA2-i CA were measured 76 (Stage 0, n = 5; I, 4; II, 15; III, 19; IV, 33) 98...

10.3390/cancers17071071 article EN Cancers 2025-03-22

Total and differential cross sections for ${\ensuremath{\nu}}_{\ensuremath{\mu}}e\ensuremath{\rightarrow}{\ensuremath{\nu}}_{\ensuremath{\mu}}e$ ${\overline{\ensuremath{\nu}}}_{\ensuremath{\mu}}e\ensuremath{\rightarrow}{\overline{\ensuremath{\nu}}}_{\ensuremath{\mu}}e$ are measured. Values the model-independent neutral-current couplings of electron found to be ${g}_{V}=\ensuremath{-}0.107\ifmmode\pm\else\textpm\fi{}0.035(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.028(\mathrm{syst})$...

10.1103/physrevd.41.3297 article EN Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 1990-06-01

10.1016/j.nima.2014.06.086 article EN publisher-specific-oa Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment 2014-07-14

A novel scheme for the focusing of high-energy leptons in future linear colliders was proposed 2001 [P. Raimondi and A. Seryi, Phys. Rev. Lett. 86, 3779 (2001)]. This has many advantageous properties over previously studied schemes, including being significantly shorter a given energy having better bandwidth. Experimental results from ATF2 accelerator at KEK are presented that validate operating principle such by demonstrating demagnification 1.3 GeV electron beam down to below 65 nm height...

10.1103/physrevlett.112.034802 article EN Physical Review Letters 2014-01-24

17,19C nuclei have been investigated by proton inelastic scattering on a liquid hydrogen target at intermediate energies. Two peaks were observed in the Doppler-corrected γ-ray spectra with energies of 210(6), 331(6) keV 17C and 72(4), 197(6) 19C corresponding to decay two excited states both nuclei. Analyzing reaction cross sections, tentative spin values determined for states. The experimental results are reasonable agreement predictions shell model calculations.

10.1016/j.physletb.2005.04.007 article EN cc-by Physics Letters B 2005-04-13

10.1016/j.nima.2009.07.014 article EN Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment 2009-07-20

In this paper, experimental observations of spontaneously excited waves in the ion cyclotron range frequency (ICRF) on JT-60U are described. The fluctuations ICRF driven by presence non-thermal distribution magnetically confined plasmas. Two types magnetic detected: one is due to high-energy D ions from neutral beam (NB) injections and other fusion products (FPs) 3 He T ions. These have been reported as emissions (ICEs) burning plasma experiments large tokamaks. This paper describes first...

10.1088/0029-5515/48/3/035012 article EN Nuclear Fusion 2008-02-07

Short-lived 46Cr, 50Fe and 54Ni were studied by isochronous mass spectrometry at the HIRFL-CSR facility in Lanzhou. The measured precision excesses (ME) of are −29471(11) keV, −34477(6) keV −39278(4) respectively. superallowed 0+→0+ β-decay Q values derived to be QEC(Cr46)=7604(11) QEC(Fe50)=8150(6) QEC(Ni54)=8731(4) keV. for one order magnitude more precise than adopted literature values. By combining existing half-lives branching ratios, we obtained corrected Ft Ft(Fe50)=3103(70) s...

10.1016/j.physletb.2017.01.039 article EN cc-by Physics Letters B 2017-01-23

We consider quantum effects of gravitational and electromagnetic fields in spherically symmetric black hole spacetimes the asymptotic safety scenario. Introducing both running couplings from renormalization group equations applying a physically sensible scale identification scheme based on Kretschmann scalar, we construct mechanically corrected, or improved Reissner-Nordstrom metric. study global structure geometry show, particular, that central singularity is resolved, being generally...

10.1103/physrevd.104.066016 article EN cc-by Physical review. D/Physical review. D. 2021-09-15

The weak coupling constants of the electron, ${g}_{V}^{e}$ and ${g}_{A}^{e}$, are determined from measurements total differential cross sections for reaction ${\ensuremath{\nu}}_{\ensuremath{\mu}}$e\ensuremath{\rightarrow}${\ensuremath{\nu}}_{\ensuremath{\mu}}$e. data also place limits interest on magnitudes a neutrino charge radius possible magnetic dipole moment.

10.1103/physrevlett.58.636 article EN Physical Review Letters 1987-02-16

Owing to the real importance of having most precise value lower limit muon mass, a very careful examination corrections in order reduce considerably error is described. A summary considered listed. (W.D.M.)

10.1103/physrevlett.2.359 article EN Physical Review Letters 1959-04-15

Recently Butler et aU) presented further evidences concerning the nature of socalled V-particles which had been observed by Rochester and 2 ) Anderson coIIaborators 3 ).According to these authors: i) The are found among penetrating showers with a rate order 1%; ii) Their decay life is estimated be about 10-10 sec; iii) There two kinds them, charged neutral, latter being 5 10 times more abundant than former, presumably due their difference in lives; iv) According aI., moreover, they can

10.1143/ptp/6.4.615 article EN Progress of Theoretical Physics 1951-08-01

We discuss the quantum improvement of black hole solutions in context asymptotic safety. The Newton coupling this formulation depends on an energy scale, which must be identified with some length scale order to study physical consequences holes. However, no principle has so far been known for identification. Here we propose that consistency first law thermodynamics is should determine physically sensible identification, at least close horizon. show leads a natural solution function horizon...

10.1103/physrevd.105.106026 article EN cc-by Physical review. D/Physical review. D. 2022-05-27

The isospin characters of low-energy dipole excitations in neutron-rich unstable nucleus 20O were investigated, for the first time nuclei. Two spectra obtained from a dominant isovector probe (O20+Au) and isoscalar (O20+α) compared analyzed by distorted-wave Born approximation to extract independently strengths. known 1− states with large strengths at energies 5.36(5) MeV (11−) 6.84(7) (12−) also excited probe. These two found have different strengths, 2.70(32)% 0.67(12)% (12−),...

10.1016/j.physletb.2017.03.017 article EN cc-by Physics Letters B 2017-03-14

The Helix Research Institute (HRI) in Japan is releasing 4356 HUman Novel Transcripts and related information the newly established HUNT database. institute a joint research project principally funded by Japanese Ministry of International Trade Industry, clones were sequenced governmental New Energy Industrial Technology Development Organization (NEDO) Human cDNA Sequencing Project. database contains an extensive amount annotation from advanced analysis represents essential bioinformatics...

10.1093/nar/29.1.185 article EN Nucleic Acids Research 2001-01-01
Coming Soon ...