Particle and Nuclear Physics In 'Particle and Nuclear Physics' Particle and Nuclear PhysicsParticle PhysicsNuclear Physics Back to 'Physics and Astronomy research' Particle Physics Energy Frontier Physics - testing theory and searching for new physics such as the Higgs boson at ATLAS. CP Violation - Investigating the origins of the matter-antimatter asymmetry in the universe at LHCb. Precision Flavour Physics - Probing ultra-rare decays of particles containing strange quarks at NA62. Nuclear Physics Researching properties of nuclei and their constituents using radioactive beams, laser spectroscopy and ultra-relativistic heavy-ion collisions. .