Charmonium spectral functions from 2+1 flavour lattice QCD

Szabolcs Borsányi, Stephan Dürr, Zoltán Fodor, Christian Hoelbling, Sándor D. Katz, Stefan Krieg, Simon Mages, Dániel Nógrádi, Attila Pásztor, Andreas Schäfer, Kálmán K. Szabó, Bálint C. Tóth, Norbert Trombitás

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30 Citations (SciVal)

Abstract

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

Original languageEnglish (US)
Article number132
JournalJournal of High Energy Physics
Volume2014
Issue number4
DOIs
StatePublished - Apr 2014

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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