P.Y. Zheng
- High-Energy Particle Collisions Research
- Particle physics theoretical and experimental studies
- Nuclear physics research studies
- Quantum Chromodynamics and Particle Interactions
- Nuclear reactor physics and engineering
- X-ray Spectroscopy and Fluorescence Analysis
- Nuclear Physics and Applications
- Stochastic processes and statistical mechanics
- Atomic and Molecular Physics
- Statistical Mechanics and Entropy
- Radiation Therapy and Dosimetry
- Nuclear Materials and Properties
- Statistical Methods and Bayesian Inference
- Graphite, nuclear technology, radiation studies
- Crystallography and Radiation Phenomena
- Pulsars and Gravitational Waves Research
- Superconductivity in MgB2 and Alloys
- Ion-surface interactions and analysis
- Radioactivity and Radon Measurements
- Ionosphere and magnetosphere dynamics
- Topological Materials and Phenomena
- Quantum many-body systems
- Thermodynamic and Structural Properties of Metals and Alloys
- Cosmology and Gravitation Theories
- Gamma-ray bursts and supernovae
The University of Texas at Dallas
2023
Institute of High Energy Physics
1988-1999
Academia Sinica
1989-1999
Lund University
1993-1995
Slovak Academy of Sciences
1995
Seattle University
1992
University of Washington
1992
National Academy of Sciences of Armenia
1992
S+Au interactions at 200A GeV were observed using emulsion chambers, permitting measurement of pseudorapidities in the central region with precision \ensuremath{\sim}0.01 unit. Scaled-factorial-moment analyses are extended to bin sizes smaller than those accessible other fixed-target experimental techniques. For a sample 151 collisions, moments calculated both ``horizontal'' and ``vertical'' analysis While found rise (in log-log plot) decreasing pseudorapidity size...
Pseudorapidity distributions of relativistic singly charged particles in oxygen-induced emulsion interactions at 14.6, 60, and 200 GeV/nucleon are studied. Limiting fragmentation behavior is observed both the target projectile regions for a central as well minimum-bias sample. Comparisons with fritiof model reveal that picture fragmenting strings successfully describes data.Received 15 December 1988DOI:https://doi.org/10.1103/PhysRevLett.62.2801©1989 American Physical Society
The average multiplicities of singly charged relativistic particles in oxygen-induced interactions with a nuclear emulsion target are studied over the energy range 2.1–200 A GeV. similar dependence as for proton-induced is observed. Both number participating nucleons and binary collisions shown to be importance particle production.
We use scaled factorial cumulant moments to analyze pseudorapidity fluctuations in nucleus-nucleus collisions. This approach is similar the method of except that it removes effects lower-order correlations upon a given moment. Significant second-order cumulants and indices (slopes with respect bin size) are found for all interactions studied. These have an inverse dependence average particle density.
Time-periodic (Floquet) drive can give rise to novel symmetry breaking and topological phases of matter. Recently, we showed that a quintessential Floquet phase known as the anomalous Floquet-Anderson insulator is stable noise on timing its drive. Here, perturb at single incommensurate frequency, resulting in quasiperiodic two-tone Our numerics indicate robust survives weak with pumping more than case white noise. Within phase, show particles move subdiffusively, which directly responsible...
Target-fragment, shower-particle (meson), interacting-proton (36–400 MeV), and total multiplicities in 16O+Ag collisions from 5A MeV to 2×105A are studied. The target disintegration exhibits energy independence above 100A even the most central collisions. Above GeV dependences of three different categories particles similar those proton-nucleus interactions. absolute yield fragments is also same while protons twice as large shower 6–7 times larger 16induced compared p-nucleus...
We report on recent results obtained by the EMUO1 collaboration from studies of 16O + emulsion, at 14.6, 60 and 200 A GeV, 32S emulsion Au interactions GeV. Shower-particle production in oxygen-induced are studied over energy range 2.1-200 Scaling limiting fragmentation observed. Multiplicity angular distributions low target-associated particles presented compared with using Ranft Fritiof simulation codes.
The recent status of the EMU01 experiment where nuclear emulsions are used as both target/detector material for horizontally exposed stacks and detector vertically chamber plates is discussed. An investigation behaviour in number produced particles per participating nucleon reveal weak nonlinear effects most central collisions. Intermittency index can be obtained from density distributions S+Au S+Ag interactions which corresponds to fractal dimensions somewhat smaller than unity.
Here we present results on charged hadron production in an experiment using tracking detectors with the highest possible spatial resolution: emulsion chambers. A sample of most central collisions will be compared to predictions Lund Model, which does accurate job representing conventional (non−quark−gluon plasma) physics nuclear reactions. We can use high resolution our examine correlations several ways. In particular, radial size particle formation region estimated pion interferometry...