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PreprintarXiv licencearXiv

Complex potential and the thermal width of quarkonium in quark-gluon plasma

  • Rasmus Normann Larsen
  • Peter Petreczky
  • Jorge Luis Dasilva Golan
  • Johannes H. Weber
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Abstract

We study the complex heavy quark anti-quark potential in lattice 2+1 flavor QCD at non-zero temperature. We point out a close relation between the imaginary part of the potential and the thermal quarkonium width. Using this relation, we estimate the thermal width of charmonia and bottomonia at high temperatures, which are not yet accessible with direct lattice QCD calculations of the quarkonium correlation functions and compare these to the results of the T-matrix analysis. For some of the excited quarkonia states, our estimates of the thermal width are smaller than the ones obtained in the T-matrix analysis.

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Cite

BibTeXRIS
BibTeX
@misc{larsen2026complex,
  title = {{Complex potential and the thermal width of quarkonium in quark-gluon plasma}},
  author = {Rasmus Normann Larsen and Peter Petreczky and Jorge Luis Dasilva Golan and Johannes H. Weber},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.40220},
  eprint = {2610.40220},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.40220},
}
RIS
TY  - UNPB
TI  - Complex potential and the thermal width of quarkonium in quark-gluon plasma
AU  - Rasmus Normann Larsen
AU  - Peter Petreczky
AU  - Jorge Luis Dasilva Golan
AU  - Johannes H. Weber
PY  - 2026
DA  - 2026/10/29
PB  - arXiv
DO  - 10.48550/arxiv.2610.40220
UR  - https://arxiv.org/abs/2610.40220
AB  - We study the complex heavy quark anti-quark potential in lattice 2+1 flavor QCD at non-zero temperature. We point out a close relation between the imaginary part of the potential and the thermal quarkonium width. Using this relation, we estimate the thermal width of charmonia and bottomonia at high temperatures, which are not yet accessible with direct lattice QCD calculations of the quarkonium correlation functions and compare these to the results of the T-matrix analysis. For some of the excited quarkonia states, our estimates of the thermal width are smaller than the ones obtained in the T-matrix analysis.
ER  -