Spectral functions of charmonium with 2+1 flavours of dynamical quarks

• DOI: 10.48550/arxiv.1410.7443
• Publication Date: 2014-01-01
• Authors: Szabolcs Borsányi; Stephan Dürr; Zoltán Fodor; Christian Hoelbling; S. D. Katz; Stefan Krieg; Simon Mages; Dániel Nógrádi; Attila Pásztor; Andreas Schäfer; Kálmán Szabó; Bálint Tóth; Norbert Trombitás
• Keywords: Nuclear and High Energy Physics; High Energy Physics - Lattice; Lattice QCD; Phase Diagram of QCD; ddc:530; High Energy Physics - Lattice (hep-lat); FOS: Physical sciences; info:eu-repo/classification/ddc/530; 530 Physik; 7. Clean energy

Finite temperature charmonium spectral functions in the pseudoscalar(PS) and vector(V) channels are studied lattice QCD with 2+1 flavours of dynamical Wilson quarks, on fine isotropic lattices (with a spacing 0.057fm), non-physical pion mass 545MeV. The highest is approximately 1.4Tc. Up to this no significant variation function seen PS channel. V channel shows some dependence, which seems be consistent dependent low frequency peak related heavy quark transport, plus independent term at omega > 0. These results accord previous calculations using quenched approximation.