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

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

Physics

Research output: Contribution to journal › Conference article › peer-review

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 m_π ≈ 545MeV. The highest temperature studied is approximately 1.4T_c. 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 language	English (US)
Article number	218
Journal	Proceedings of Science
Volume	Part F130500
State	Published - 2014
Event	32nd International Symposium on Lattice Field Theory, LATTICE 2014 - New York, United States Duration: Jun 23 2014 → Jun 28 2014

All Science Journal Classification (ASJC) codes

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Borsányi, Szabolcs ; Dürr, Stephan ; Fodor, Zoltán ; Hoelbling, Christian ; Katz, Sándor D. ; Krieg, Stefan ; Mages, Simon ; Nógrádi, Dániel ; Pásztor, Attila ; Schäfer, Andreas ; Szabó, Kálmán K. ; Tóth, Bálint C. ; Trombitás, Norbert. / Spectral functions of charmonium with 2+1 flavours of dynamical quarks. In: Proceedings of Science. 2014 ; Vol. Part F130500.

@article{1317fab4c3b4420fac569b9e789426bc,

title = "Spectral functions of charmonium with 2+1 flavours of dynamical quarks",

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].",

author = "Szabolcs Bors{\'a}nyi and Stephan D{\"u}rr and Zolt{\'a}n Fodor and Christian Hoelbling and Katz, {S{\'a}ndor D.} and Stefan Krieg and Simon Mages and D{\'a}niel N{\'o}gr{\'a}di and Attila P{\'a}sztor and Andreas Sch{\"a}fer and Szab{\'o}, {K{\'a}lm{\'a}n K.} and T{\'o}th, {B{\'a}lint C.} and Norbert Trombit{\'a}s",

note = "Funding Information: Computations were carried out on GPU clusters at the Universities of Wuppertal and Budapest as well as on supercomputers in Forschungszentrum Juelich. This work was supported by the EU Framework Programme 7 grant (FP7/2007-2013)/ERC No 208740, by the Deutsche Forschungsge-meinschaft grants FO 502/2, SFB-TR 55 and by Hungarian Scientific Research Fund grant OTKA-NF-104034..; 32nd International Symposium on Lattice Field Theory, LATTICE 2014 ; Conference date: 23-06-2014 Through 28-06-2014",

year = "2014",

language = "English (US)",

volume = "Part F130500",

journal = "Proceedings of Science",

issn = "1824-8039",

publisher = "Sissa Medialab Srl",

}

Spectral functions of charmonium with 2+1 flavours of dynamical quarks. / Borsányi, Szabolcs; Dürr, Stephan; Fodor, Zoltán; Hoelbling, Christian; Katz, Sándor D.; Krieg, Stefan; Mages, Simon; Nógrádi, Dániel; Pásztor, Attila; Schäfer, Andreas; Szabó, Kálmán K.; Tóth, Bálint C.; Trombitás, Norbert.

In: Proceedings of Science, Vol. Part F130500, 218, 2014.

Research output: Contribution to journal › Conference article › peer-review

TY - JOUR

T1 - Spectral functions of charmonium with 2+1 flavours of dynamical quarks

AU - Borsányi, Szabolcs

AU - Dürr, Stephan

AU - Fodor, Zoltán

AU - Hoelbling, Christian

AU - Katz, Sándor D.

AU - Krieg, Stefan

AU - Mages, Simon

AU - Nógrádi, Dániel

AU - Pásztor, Attila

AU - Schäfer, Andreas

AU - Szabó, Kálmán K.

AU - Tóth, Bálint C.

AU - Trombitás, Norbert

N1 - Funding Information: Computations were carried out on GPU clusters at the Universities of Wuppertal and Budapest as well as on supercomputers in Forschungszentrum Juelich. This work was supported by the EU Framework Programme 7 grant (FP7/2007-2013)/ERC No 208740, by the Deutsche Forschungsge-meinschaft grants FO 502/2, SFB-TR 55 and by Hungarian Scientific Research Fund grant OTKA-NF-104034..

PY - 2014

Y1 - 2014

N2 - 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].

AB - 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].

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M3 - Conference article

AN - SCOPUS:85030102226

VL - Part F130500

JO - Proceedings of Science

JF - Proceedings of Science

SN - 1824-8039

M1 - 218

T2 - 32nd International Symposium on Lattice Field Theory, LATTICE 2014

Y2 - 23 June 2014 through 28 June 2014

ER -