In-medium P-wave quarkonium from the complex lattice QCD potential

Burnier, Yannis (Institute of Theoretical Physics, EPFL, CH-1015, Lausanne, Switzerland) ; Kaczmarek, Olaf (Fakultät für Physik, Universität Bielefeld, D-33615, Bielefeld, Germany) ; Rothkopf, Alexander (Institute for Theoretical Physics, Heidelberg University, Philosophenweg 16, 69120, Heidelberg, Germany)

13 October 2016

Abstract: We extend our lattice QCD potential based study [1] of the in-medium properties of heavy quark bound states to P-wave bottomonium and charmonium. Similar to the behavior found in the S-wave channel their spectra show a characteristic broadening, as well as mass shifts to lower energy with increasing temperature. In contrast to the S-wave states, finite angular momentum leads to the survival of spectral peaks even at temperatures, where the continuum threshold reaches below the bound state remnant mass. We elaborate on the ensuing challenges in defining quarkonium dissolution and present estimates of melting temperatures for the spin averaged χ b and χ c states. As an application to heavy-ion collisions we further estimate the contribution of feed down to S-wave quarkonium through the P-wave states after freezeout.

Published in: JHEP 1610 (2016) 032
Published by: Springer/SISSA
DOI: 10.1007/JHEP10(2016)032
arXiv: 1606.06211
License: CC-BY-4.0

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