2 results match your criteria: "CSSM and ARC Centre of Excellence for Dark Matter Particle Physics[Affiliation]"
New Data-Driven Constraints on the Sign of Gluon Polarization in the Proton.
Phys Rev Lett
October 2024
University of Adelaide, CSSM and ARC Centre of Excellence for Dark Matter Particle Physics, Department of Physics, Adelaide 5005, Australia.
Article Synopsis
- - The potential existence of negative gluon helicity (Δg) has been found to align with current data from experiments like polarized proton-proton collisions and lattice QCD measurements.
- - A new analysis of polarized parton distributions in protons introduces constraints from high-x deep-inelastic scattering (DIS).
- - Results indicate that models incorporating negative Δg struggle to match high-x DIS data alongside other experimental data, implying that negative Δg may not be a viable solution.
Nucleon Structure and Strong Interactions in Dark Matter Capture in Neutron Stars.
Phys Rev Lett
September 2021
ARC Centre of Excellence for Dark Matter Particle Physics, School of Physics, The University of Melbourne, Victoria 3010, Australia.
We outline two important effects that are missing from most evaluations of the dark matter capture rate in neutron stars. As dark matter scattering with nucleons in the star involves large momentum transfer, nucleon structure must be taken into account via a momentum dependence of the hadronic form factors. In addition, due to the high density of neutron star matter, we should account for nucleon interactions rather than modeling the nucleons as an ideal Fermi gas.
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