A resummed perturbative estimate for the quarkonium spectral function in hot QCD

Laine M (2007)
JOURNAL OF HIGH ENERGY PHYSICS 2007(05): 028.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
By making use of the finite-temperature real-time static potential that was introduced and computed to leading non-trivial order in Hard Thermal Loop resummed perturbation theory in recent work, and solving numerically a Schrodinger-type equation, we estimate the quarkonium (in practice, bottomonium) contribution to the spectral function of the electromagnetic current in hot QCD. The spectral function shows a single resonance peak which becomes wider and then disappears as the temperature is increased beyond 450 MeV or so. This behaviour can be compared with recently attempted lattice reconstructions of the same quantity, based on the "maximum entropy method", which generically show several peaks. We also specify the dependence of our results on the spatial momentum of the electromagnetic current, as well a on the baryon chemical potential characterising the hot QCD plasma.
Stichworte
NLO computations; thermal field theory; lattice QCD
Erscheinungsjahr
2007
Zeitschriftentitel
JOURNAL OF HIGH ENERGY PHYSICS
Band
2007
Ausgabe
05
Art.-Nr.
028
ISSN
1126-6708
eISSN
1029-8479
Page URI
https://pub.uni-bielefeld.de/record/1593529

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Laine M. A resummed perturbative estimate for the quarkonium spectral function in hot QCD. JOURNAL OF HIGH ENERGY PHYSICS. 2007;2007(05): 028.
Laine, M. (2007). A resummed perturbative estimate for the quarkonium spectral function in hot QCD. JOURNAL OF HIGH ENERGY PHYSICS, 2007(05), 028. https://doi.org/10.1088/1126-6708/2007/05/028
Laine, Mikko. 2007. “A resummed perturbative estimate for the quarkonium spectral function in hot QCD”. JOURNAL OF HIGH ENERGY PHYSICS 2007 (05): 028.
Laine, M. (2007). A resummed perturbative estimate for the quarkonium spectral function in hot QCD. JOURNAL OF HIGH ENERGY PHYSICS 2007:028.
Laine, M., 2007. A resummed perturbative estimate for the quarkonium spectral function in hot QCD. JOURNAL OF HIGH ENERGY PHYSICS, 2007(05): 028.
M. Laine, “A resummed perturbative estimate for the quarkonium spectral function in hot QCD”, JOURNAL OF HIGH ENERGY PHYSICS, vol. 2007, 2007, : 028.
Laine, M.: A resummed perturbative estimate for the quarkonium spectral function in hot QCD. JOURNAL OF HIGH ENERGY PHYSICS. 2007, : 028 (2007).
Laine, Mikko. “A resummed perturbative estimate for the quarkonium spectral function in hot QCD”. JOURNAL OF HIGH ENERGY PHYSICS 2007.05 (2007): 028.
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arXiv: 0704.1720

Inspire: 748551

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