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RESEARCH PRODUCT

Quarkonium spectral functions with complex potential

Peter PetreczkyC. MiaoC. MiaoAgnes Mocsy

subject

PhysicsQuarkNuclear and High Energy PhysicsParticle physicsSpectral representationHigh Energy Physics::LatticeHigh Energy Physics::PhenomenologyLattice field theoryLattice QCDQuarkoniumCorrelation function (statistical mechanics)Excited stateHigh Energy Physics::ExperimentGround state

description

Abstract We study quarkonium spectral functions at high temperatures using a potential model with complex potential. The real part of the potential is constrained by the lattice QCD data on static quark anti-quark correlation functions, while the imaginary part of the potential is taken from perturbative calculations. We find that the imaginary part of the potential has significant effect on quarkonium spectral functions, in particular, it leads to the dissolution of the 1S charmonium and excited bottomonium states at temperatures about 250 MeV and melting of the ground state bottomonium at temperatures slightly above 450 MeV.

yearjournalcountryeditionlanguage
2011-04-01Nuclear Physics A
https://doi.org/10.1016/j.nuclphysa.2011.02.028