A5077862670- Quantum Chromodynamics and Particle Interactions
- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Nuclear physics research studies
- Black Holes and Theoretical Physics
- Atomic and Subatomic Physics Research
- Pulsars and Gravitational Waves Research
- Superconducting Materials and Applications
- Quantum, superfluid, helium dynamics
- Cold Atom Physics and Bose-Einstein Condensates
- Dark Matter and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Physics of Superconductivity and Magnetism
- Advanced NMR Techniques and Applications
- High-pressure geophysics and materials
- Particle Accelerators and Free-Electron Lasers
- Neutrino Physics Research
- Nuclear Physics and Applications
- Atomic and Molecular Physics
- Gamma-ray bursts and supernovae
- Geophysics and Gravity Measurements
- Complex Systems and Time Series Analysis
- Forest Insect Ecology and Management
- Particle accelerators and beam dynamics
- Insect-Plant Interactions and Control
The University of Adelaide
2016-2025
ARC Centre of Excellence for Dark Matter Particle Physics
2021-2025
University of Cyprus
2025
University of Chinese Academy of Sciences
2025
Saint-Gobain (United Kingdom)
2023
University of Minnesota, Duluth
2023
ARC Centre of Excellence for Particle Physics at the Terascale
2013-2022
University of Warwick
2015-2021
Coventry (United Kingdom)
2016-2021
University of Oxford
1988-2019
By incorporating chiral invariance in the MIT bag model, we are led to a theory which pion field is coupled confined quarks only at surface. An equivalent quantized of nucleons and $\ensuremath{\Delta}'\mathrm{s}$ interacting with pions then obtained. The pion-nucleon scattering amplitude this model found give good fit experimental data on (3,3) resonance, radius about 0.72 fm.
A previously derived model in which a baryon is treated as three-quark bag that surrounded by cloud of pions used to compute the static properties nucleon. The only free parameter radius fixed fit pion-nucleon scattering (3,3)-resonance region be about 0.8 fm. With so determined computed values root-mean-square radii and magnetic moments neutron proton, ${g}_{A}$, are all very good agreement with experimental values. In addition, one-third $\ensuremath{\Delta}$-nucleon mass splitting found...
Following a major shortage of 99Mo in the 2009–2010 period, concern grew that aging reactor production facilities needed to be replaced. Most producers were using highly enriched 235U (HEU) as target material. The Organisation for Economic Co-...Read More
We report an analysis of the impressive new lattice simulation results for octet baryon masses in $2+1$-flavor QCD. The is based on a low-order expansion about chiral SU(3) limit which symmetry breaking arises from terms linear quark plus variation Goldstone boson leading loops. evaluated at physical light-quark are remarkable agreement with experimental values, model dependence considerably smaller than rather small statistical uncertainty. From mass formulas one can evaluate sigma...
Recent lattice measurements have given accurate estimates of the quark condensates in proton. We use these results to significantly improve dark matter predictions benchmark models within constrained minimal supersymmetric standard model. The predicted spin-independent cross sections are at least an order magnitude smaller than previously suggested and our significant consequences for searches.
For almost 50 years the structure of Λ(1405) resonance has been a mystery. Even though it contains heavy strange quark and odd parity, its mass is lower than any other excited spin-1/2 baryon. Dalitz co-workers speculated that might be molecular state an antikaon bound to nucleon. However, standard quark-model also admissible. Although intervening have seen considerable effort, there no convincing resolution. Here we present new lattice QCD simulation showing magnetic form factor vanishes,...
We investigate various resummations of the chiral expansion and fit to extremely accurate lattice QCD data for mass nucleon recently obtained by CP-PACS group. Using a variety finite-range regulators, we demonstrate remarkably robust extrapolation mass. The systematic error associated with alone is estimated be less than 1%.
Abstract The metal‐free polymerization of propylene oxide (PO) using a special class alkene—N‐heterocyclic olefins (NHOs)—as catalysts is described. Manipulation the chemical structure NHO organocatalyst allows for preparation poly(propylene oxide) in high yields with turnover (TON>2000), which renders this most active system PO reported to date. resulting polyether displays predictable end groups, molar mass, and low dispersity ( Đ M <1.09). NHOs an unsaturated backbone are essential...
We outline two important effects that are missing from most evaluations of the dark matter capture rate in neutron stars. As scattering with nucleons star involves large momentum transfer, nucleon structure must be taken into account via a dependence hadronic form factors. In addition, due to high density matter, we should for interactions rather than modeling as an ideal Fermi gas. Properly incorporating these is found suppress by up 3 orders magnitude heaviest