The bottomonium melting from screening correlators at high temperature

Abstract

We study the bottomonium screening masses in a 2+1 flavor QCD medium on the lattice using the Highly Improved Staggered Quark(HISQ) discretization for the quarks. We focus on a wide temperature range in the region $350\mathrm{MeV}\le T<1000\mathrm{MeV}$, and perform our calculations on three different lattice spacings to control the lattice cut-off effects, corresponding to temporal lattice extent of $N_{\tau }=8,10,12$. From a detailed study of the temperature dependence of screening masses we conclude that while the ${\eta }_b(1S)$ and ${\rm Y}(1S)$ states melt at $T>500$ MeV, the scalar and axial-vector states ${\chi }_{b0}(1P)$ and $h_b(1P)$ melt already at $T>350$ MeV.

6 pages, RevTEX, 3 figures, matches the published version

References in corpus (10)

• The equation of state in (2+1)-flavor QCD
• Highly Improved Staggered Quarks on the Lattice, with Applications to Charm Physics
• Quarkonium correlators and spectral functions at zero and finite temperature
• Can quarkonia survive deconfinement ?
• Bottomonium above deconfinement in lattice nonrelativistic QCD
• Bottomonium spectrum at order v^6 from domain-wall lattice QCD: precise results for hyperfine splittings
• In-medium modifications of open and hidden strange-charm mesons from spatial correlation functions
• On temperature dependence of quarkonium correlators
• The bottomonium spectrum from lattice QCD with 2+1 flavors of domain wall fermions
• Color Screening in Quantum Chromodynamics