J. Song

ORCID: 0000-0002-2847-2291
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About
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Research Areas
  • High-Energy Particle Collisions Research
  • Particle physics theoretical and experimental studies
  • Quantum Chromodynamics and Particle Interactions
  • Particle Detector Development and Performance
  • Neutrino Physics Research
  • Nuclear reactor physics and engineering
  • Astrophysics and Cosmic Phenomena
  • Dark Matter and Cosmic Phenomena
  • Nuclear physics research studies
  • Radiation Detection and Scintillator Technologies
  • Particle Accelerators and Free-Electron Lasers
  • Pulsars and Gravitational Waves Research
  • Advanced NMR Techniques and Applications
  • Cosmology and Gravitation Theories
  • Statistical Methods and Bayesian Inference
  • Superconducting Materials and Applications
  • Quantum, superfluid, helium dynamics
  • Computational Physics and Python Applications
  • Nuclear Physics and Applications
  • Stochastic processes and statistical mechanics
  • Atomic and Subatomic Physics Research
  • Muon and positron interactions and applications
  • X-ray Spectroscopy and Fluorescence Analysis
  • Theoretical and Computational Physics
  • Advanced Numerical Analysis Techniques

Pusan National University
2013-2025

University of Houston
2019-2024

A. Alikhanyan National Laboratory
2015-2024

Shihezi University
2024

University of Bergen
2015-2024

University of Pavol Jozef Šafárik
2022-2024

Stony Brook University
2022-2023

RIKEN BNL Research Center
2022-2023

Ohio University
2023

Lund University
2017-2022

A double-hyperfragment event has been found in a hybrid-emulsion experiment. It is identified uniquely as the sequential decay of ( 6)(LambdaLambda)He emitted from Xi(-) hyperon nuclear capture at rest. The mass and Lambda-Lambda interaction energy DeltaB(LambdaLambda) have measured for first time devoid ambiguities due to possibilities excited states. value 1.01+/-0.20(+0.18)(-0.11) MeV. This demonstrates that weakly attractive.

10.1103/physrevlett.87.212502 article EN Physical Review Letters 2001-11-02

We have studied stars in nuclear emulsion due to the capture at rest of Ξ- hyperons produced (K-, K+) reaction. The sequential weak decay a double hypernucleus (nucleus with S = -2) has been directly observed. is assigned as either 10ΛΛBe or 13ΛΛB. This assignment excludes existence H dibaryon lighter than 2203.7 ±0.7 MeV/c2.

10.1143/ptp.85.1287 article EN Progress of Theoretical Physics 1991-06-01

A hybrid experiment with nuclear emulsion and scintillating-fiber detectors (KEK-E373) has been performed to search for double-strangeness systems. Among about 10${}^{3}$ events of ${\ensuremath{\Xi}}^{\ensuremath{-}}$ hyperons captured at rest by nuclei, we have observed four which clearly show the topology cascade weak decays double-$\ensuremath{\Lambda}$ hypernuclei including ``Nagara'' event. Regarding Nagara event, values two-$\ensuremath{\Lambda}$ binding energy...

10.1103/physrevc.88.014003 article EN Physical Review C 2013-07-17

Extraction of a high-fidelity 3D medial axis is crucial operation in CAD. When dealing with polygonal model as input, ensuring accuracy and tidiness becomes challenging due to discretization errors inherent the mesh surface. Commonly, existing approaches yield medial-axis surfaces various artifacts, including zigzag boundaries, bumpy surfaces, unwanted spikes, non-smooth stitching curves. Considering that surface CAD can be easily decomposed into collection patches, its extracted by...

10.1109/tvcg.2025.3531445 article EN IEEE Transactions on Visualization and Computer Graphics 2025-01-01

The H-dibaryon resonance was sought by a ΛΛ invariant mass spectrum that obtained the C12 (K−,K+ΛΛX) reactions. We observed bump near threshold, as reported previous experiment (KEK E224), with better statistics. Data were compared results of cascade model calculation including final state interactions consistent newly measured binding energy ΛΛ6He. No significant enhancements above levels predictions observed. resulting upper limit for production cross section H range between and ΞN...

10.1103/physrevc.75.022201 article EN Physical Review C 2007-02-07

From the analysis of 685 neutrino and antineutrino interactions in an emulsion target, fifteen candidates for multiprong decay charged charmed particles are found. This Letter presents lifetimes ${D}^{\ifmmode\pm\else\textpm\fi{}}$, ${F}^{\ifmmode\pm\else\textpm\fi{}}$, ${{\ensuremath{\Lambda}}_{c}}^{+}$ states based on fitted events sample.

10.1103/physrevlett.45.1053 article EN Physical Review Letters 1980-09-29

The nuclear emulsion target of the CHORUS detector was exposed to wide-band neutrino beam CERN SPS 27 GeV average energy from 1994 1997. In total, about 100 000 charged-current (CC) interactions with at least one identified muon were located in and fully reconstructed, using newly developed automated scanning systems. Charmed particles searched for by a program recognizing particle decays. observation decay makes it possible select sample very low background minimal kinematical bias. all,...

10.1088/1367-2630/13/9/093002 article EN cc-by New Journal of Physics 2011-09-01

The S = -2 hypernuclear states formed through (K-, K+) reactions have been studied by using the 1.66 GeV/c K- beam provided KEK Proton Synchrotron. Investigation has done on stars due to capture of Ξ- hyperons at rest in nuclear emulsion, which were produced reactions. We observed a clear case an absorption hyperon nucleus followed back-to-back emission two single-Λ hypernuclei.

10.1143/ptp/89.2.493 article EN Progress of Theoretical Physics 1993-02-01

In an experiment measuring charmed-particle lifetimes with a hybrid emulsion spectrometer, 1248 neutrino and antineutrino interactions produced by the wide-band beam at Fermi National Accelerator Laboratory have been located. Twenty-one candidates for decay of neutral charmed particles are found. The lifetime ${D}^{0}$ based on sixteen constrained events this sample is measured to be ${2.3}_{\ensuremath{-}0.5}^{+0.8}$\ifmmode\times\else\texttimes\fi{}${10}^{\ensuremath{-}13}$ sec.

10.1103/physrevlett.48.844 article EN Physical Review Letters 1982-03-29

During the years 1994–1997, emulsion target of CHORUS detector was exposed to Wide Band Neutrino Beam from CERN-SPS. About 170 000 neutrino interactions were successfully located in emulsion. Improvements automatic scanning systems and application different criteria allowed sample events be used for studies charm production. We present a measurement production rate D0 mesons based on 25 693 νμ charged-current (CC) analysed so far. After reconstruction event topology vertex region, 283 decays...

10.1016/s0370-2693(02)01173-5 article EN cc-by Physics Letters B 2002-02-01
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