Thermal quarkonium physics in the pseudoscalar channel

Burnier, Yannis; Ding, H.-T.; Kaczmarek, O.; Kruse, A.-L.; Laine, Mikko Sakari; Ohno, H.; Sandmeyer, H. (2017). Thermal quarkonium physics in the pseudoscalar channel. Journal of High Energy Physics, 2017(11) Springer 10.1007/JHEP11(2017)206

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The pseudoscalar correlator is an ideal lattice probe for thermal modifications to quarkonium spectra, given that it is not compromised by a contribution from a large transport peak. We construct a perturbative spectral function incorporating resummed thermal effects around the threshold and vacuum asymptotics above the threshold, and compare the corresponding imaginary-time correlators with continuum-extrapolated lattice data for quenched SU(3) at several temperatures. Modest differences are observed, which may originate from non-perturbative mass shifts or renormalization factors, however no resonance peaks are needed for describing the quenched lattice data for charmonium at and above T ∼ 1.1Tc ∼ 350 MeV. For comparison, in the bottomonium case a good description of the lattice data is obtained with a spectral function containing a single thermally broadened resonance peak.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)
08 Faculty of Science > Institute of Theoretical Physics

UniBE Contributor:

Burnier, Yannis and Laine, Mikko Sakari

Subjects:

500 Science > 530 Physics

ISSN:

1029-8479

Publisher:

Springer

Language:

English

Submitter:

Esther Fiechter

Date Deposited:

02 Mar 2018 14:28

Last Modified:

24 Oct 2019 14:48

Publisher DOI:

10.1007/JHEP11(2017)206

ArXiv ID:

1709.07612

BORIS DOI:

10.7892/boris.108223

URI:

https://boris.unibe.ch/id/eprint/108223

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