Thermal quarkonium physics in the pseudoscalar channel
Autor: | Olaf Kaczmarek, Hauke Sandmeyer, Anna-Lena Kruse, Yannis Burnier, Mikko Laine, Hiroshi Ohno, Heng-Tong Ding |
---|---|
Rok vydání: | 2017 |
Předmět: |
Nuclear and High Energy Physics
530 Physics High Energy Physics::Lattice FOS: Physical sciences Lattice QCD 01 natural sciences Spectral line Renormalization High Energy Physics - Lattice High Energy Physics - Phenomenology (hep-ph) Perturbative QCD 0103 physical sciences lcsh:Nuclear and particle physics. Atomic energy. Radioactivity Thermal Field Theory 010306 general physics Physics Thermal quantum field theory 010308 nuclear & particles physics High Energy Physics - Lattice (hep-lat) Quarkonium Pseudoscalar High Energy Physics - Phenomenology Quark–gluon plasma Quark-Gluon Plasma lcsh:QC770-798 Atomic physics |
Zdroj: | Journal of High Energy Physics Journal of High Energy Physics, Vol 2017, Iss 11, Pp 1-27 (2017) 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 |
ISSN: | 1029-8479 |
DOI: | 10.1007/jhep11(2017)206 |
Popis: | 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. Comment: 28 pages. v2: published version |
Databáze: | OpenAIRE |
Externí odkaz: |