In-medium dispersion relations of charmonia studied by maximum entropy method

Abstract

We study in-medium spectral properties of charmonia in the vector and pseudoscalar channels at nonzero momenta on quenched lattices, especially focusing on their dispersion relation and weight of the peak. We measure the lattice Euclidean correlation functions with nonzero momenta on the anisotropic quenched lattices and study the spectral functions with the maximum entropy method. The dispersion relations of charmonia and the momentum dependence of the weight of the peak are analyzed with the maximum entropy method together with the errors estimated probabilistically in this method. We find significant increase of the masses of charmonia in medium. It is also found that the functional form of the charmonium dispersion relations is not changed from that in the vacuum within the error even at $T\simeq 1.6T_c$ for all the channels we analyzed.

arXiv comment11 pages, 14 figures

References in corpus (23)

• Heavy quarkonium: progress, puzzles, and opportunities
• Heavy-flavour and quarkonium production in the LHC era: from proton-proton to heavy-ion collisions
• Maximum Entropy Analysis of the Spectral Functions in Lattice QCD
• $J/\psi$ and ${\eta }_c$ in the Deconfined Plasma from Lattice QCD
• Behavior of Charmonium Systems after Deconfinement
• Spectral functions at small energies and the electrical conductivity in hot, quenched lattice QCD
• An AdS/CFT Calculation of Screening in a Hot Wind
• Charmonium properties in hot quenched lattice QCD
• Quarkonium correlators and spectral functions at zero and finite temperature
• Can quarkonia survive deconfinement ?
• Charmonium at finite temperature in quenched lattice QCD
• Propagation of Cool Pions
• Heavy Quark Diffusion with Relativistic Langevin Dynamics in the Quark-Gluon Fluid
• Constant contribution in meson correlators at finite temperature
• Measurement of Bottom versus Charm as a Function of Transverse Momentum with Electron-Hadron Correlations in p+p Collisions at sqrt(s)=200 GeV
• Spectral densities for hot QCD plasmas in a leading log approximation
• S wave bottomonium states moving in a quark-gluon plasma from lattice NRQCD
• Charmonium spectral functions from 2+1 flavour lattice QCD
• Charmonium spectral functions with the variational method in zero and finite temperature lattice QCD
• Meson correlators above deconfinement
• Momentum dependences of charmonium properties from lattice QCD
• Dilepton production spectrum above Tc with a lattice quark propagator
• Possible generation of anomalously soft quark excitations at nonzero temperature: Nonhyperbolic dispersion of parapion and van Hove singularity

Cited by in corpus (15)

• Heavy Quarkonium in Extreme Conditions
• Improved Gauss law model and in-medium heavy quarkonium at finite density and velocity
• Open Quantum Systems for Quarkonia
• Quantum Brownian motion of a heavy quark pair in the quark-gluon plasma
• Quarkonium in-medium properties from realistic lattice NRQCD
• Thermal quarkonium physics in the pseudoscalar channel
• Bayesian study of relativistic open and hidden charm in anisotropic lattice QCD
• Stochastic reconstructions of spectral functions: Application to lattice QCD
• Some Aspects of the Theory of Heavy Ion Collisions
• Bayesian inference of real-time dynamics from lattice QCD
• Spectral and transport properties from lattice QCD
• Charmonium ground and excited states at finite temperature from complex Borel sum rules
• Quarkonium production and suppression: Theory
• Heavy quarkonium with finite three momentum near $T_c$
• Application of radial basis functions neutral networks in spectral functions