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

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

Research output: Contribution to journalConference article

Abstract

Finite temperature charmonium spectral functions in the pseudoscalar(PS) and vector(V) 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 mπ ≈ 545MeV. The highest temperature studied is approximately 1.4Tc. Up to this temperature no significant variation of the spectral function is seen in the PS channel. The V 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. The details of the study can be found in [1].

Original languageEnglish
Article number218
JournalProceedings of Science
VolumePart F130500
Publication statusPublished - Jan 1 2014
Event32nd International Symposium on Lattice Field Theory, LATTICE 2014 - New York, United States
Duration: Jun 23 2014Jun 28 2014

ASJC Scopus subject areas

  • General

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    Borsányi, S., Dürr, S., Fodor, Z., Hoelbling, C., Katz, S. D., Krieg, S., Mages, S., Nógrádi, D., Pásztor, A., Schäfer, A., Szabó, K. K., Tóth, B. C., & Trombitás, N. (2014). Spectral functions of charmonium with 2+1 flavours of dynamical quarks. Proceedings of Science, Part F130500, [218].