The quark-mass dependence of the potential energy between static colour sources in the QCD vacuum with light and strange quarks
John Bulava, Francesco Knechtli, Vanessa Koch, Colin Morningstar, Mike Peardon
Abstract
The low-lying energy spectrum of the static-colour-source-anti-source system in a vacuum containing light and strange quarks is computed using lattice QCD for a range of different light quark masses. The resulting levels are described using a simple model Hamiltonian and the parameters in this model are extrapolated to the physical light-quark masses. In this framework, the QCD string tension is found to be σ=445(3)stat(6)sys MeV.
Topics & Concepts
PhysicsParticle physicsQuarkStrange quarkQuantum chromodynamicsQCD vacuumQuark starUp quarkNuclear physicsBottom quarkTop quarkStrange matterLattice QCDQuantum Chromodynamics and Particle InteractionsHigh-Energy Particle Collisions ResearchParticle physics theoretical and experimental studies