The melting and abundance of open charm hadrons

Abstract

Ratios of cumulants of conserved net charge fluctuations are sensitive to the degrees of freedom that are carriers of the corresponding quantum numbers in different phases of strong interaction matter. Using lattice QCD with 2+1 dynamical flavors and quenched charm quarks we calculate second and fourth order cumulants of net charm fluctuations and their correlations with other conserved charges such as net baryon number, electric charge and strangeness. Analyzing appropriate ratios of these cumulants we probe the nature of charmed degrees of freedom in the vicinity of the QCD chiral crossover region. We show that for temperatures above the chiral crossover transition temperature, charmed degrees of freedom can no longer be described by an uncorrelated gas of hadrons. This suggests that the dissociation of open charm hadrons and the emergence of deconfined charm states sets in just near the chiral crossover transition. Till the crossover region we compare these lattice QCD results with two hadron resonance gas models --including only the experimentally established charmed resonances and also including additional states predicted by quark model and lattice QCD calculations. This comparison provides evidence for so far unobserved charmed hadrons that contribute to the thermodynamics in the crossover region.

arXiv commentThe published version

References in corpus (27)

• The chiral and deconfinement aspects of the QCD transition
• Highly Improved Staggered Quarks on the Lattice, with Applications to Charm Physics
• Spectroscopy and Regge trajectories of heavy baryons in the relativistic quark-diquark picture
• Fluctuations and Correlations of net baryon number, electric charge, and strangeness: A comparison of lattice QCD results with the hadron resonance gas model
• Quark Coalescence for Charmed Mesons in Ultrarelativistic Heavy-Ion Collisions
• Freeze-out Conditions in Heavy Ion Collisions from QCD Thermodynamics
• Hadronic fluctuations at the QCD phase transition
• Progress Toward Understanding Baryon Resonances
• Physics Performance Report for PANDA: Strong Interaction Studies with Antiprotons
• Heavy-light meson spectroscopy and Regge trajectories in the relativistic quark model
• Baryon-strangeness correlations: a diagnostic of strongly interacting matter
• Confronting LHC data with the statistical hadronization model
• Charmonium properties in hot quenched lattice QCD
• Is there a flavor hierarchy in the deconfinement transition of QCD?
• What happens to the Upsilon and eta_b in the quark-gluon plasma? Bottomonium spectral functions from lattice QCD
• Strangeness at high temperatures: from hadrons to quarks
• Open charm in nuclear matter at finite temperature
• Excited spectroscopy of charmed mesons from lattice QCD
• Hadron Mass Spectrum from Lattice QCD
• Polyakov loop in 2+1 flavor QCD
• The Polyakov loop and the hadron resonance gas model
• An initial study of mesons and baryons containing strange quarks with GlueX
• The QCD equation of state and the effects of the charm
• Lattice QCD review of charmonium and open-charm spectroscopy
• Meson screening masses at finite temperature with Highly Improved Staggered Quarks
• Update on the 2+1+1 flavor QCD equation of state with HISQ
• Studies of charmed baryons at LHCb

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• Properties of hot and dense matter from relativistic heavy ion collisions
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• Fluctuations and correlations in high temperature QCD
• Lattice QCD and heavy ion collisions: a review of recent progress
• Charm-Baryon Production in Proton-Proton Collisions
• Hadronization and Charm-Hadron Ratios in Heavy-Ion Collisions
• Polyakov loop in 2+1 flavor QCD from low to high temperatures
• Fluctuations of conserved charges in relativistic heavy ion collisions: An introduction
• Diagonal and off-diagonal quark number susceptibilities at high temperatures
• Heavy-flavor production and medium properties in high-energy nuclear collisions - What next?
• Equation of State in 2+1 Flavor QCD at High Temperatures
• Heavy-Quark Diffusion in the Quark-Gluon Plasma
• Hadron Resonance Gas with Repulsive Interactions and Fluctuations of Conserved Charges
• The multiple-charm hierarchy in the statistical hadronization model
• In-medium modifications of open and hidden strange-charm mesons from spatial correlation functions
• Deconfinement as an entropic self-destruction: a solution for the quarkonium suppression puzzle?
• Charm Degrees of Freedom in Quark Gluon Plasma
• Cosmic QCD Epoch at Nonvanishing Lepton Asymmetry
• Fluctuations and correlations of net baryon number, electric charge and strangeness in a background magnetic field
• The phase structure of QCD
• Thermodynamics of strong-interaction matter from Lattice QCD
• Bayesian study of relativistic open and hidden charm in anisotropic lattice QCD
• Photo- and Electrocouplings of Nucleon Resonances
• Lattice QCD Thermodynamics with Physical Quark Masses
• Fate of charmed mesons near chiral symmetry restoration in hot matter
• Pseudoscalar and vector open-charm mesons at finite temperature
• Probing the electromagnetic fields in ultrarelativistic collisions with leptons from $Z^0$ decay and charmed mesons
• Rapidity window dependences of higher order cumulants and diffusion master equation
• Color Screening in Quantum Chromodynamics
• Effects of the QCD Equation of State and Lepton Asymmetry on Primordial Gravitational Waves
• N* Experiments and their Impact on Strong QCD Physics
• Charged-particle multiplicity dependence of charm-baryon-to-meson ratio in high-energy proton-proton collisions
• Charm degrees of freedom in hot matter from lattice QCD
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• Experimental results and phenomenology of quarkonium production in relativistic nuclear collisions
• Net baryon number fluctuations across the chiral phase transition at finite density in the strong coupling lattice QCD
• Holographically emulating sequential versus instantaneous disappearance of vector mesons in a hot environment
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• Extended soft wall model with background related to features of QCD thermodynamics
• Diffusion and fluctuations of open charmed hadrons in an interacting hadronic medium
• Chiral condensate and the equation of state at nonzero baryon density from the hadron resonance gas model with a repulsive mean field
• Holographic vector mesons in a dilaton background
• Generalized susceptibilities and the properties of charm degrees of freedom across the QCD crossover temperature
• Hard and thermal probes of QGP from the perspective of Lattice QCD
• Open-charm Euclidean correlators within heavy-meson EFT interactions
• Axial-tensor Meson Family at $T\ne 0$
• Emergence of New Systematics for Open Charm Production in High Energy Collisions
• Temperature Dependence of Heavy Quark Diffusion from (2+1)-flavor Lattice QCD
• Correlations between light and heavy flavors near the chiral crossover
• Spectrum and Structure of Excited Baryons with CLAS
• Flavor dependence of the thermal dissociations of vector and axial-vector mesons
• Heavy-Light Susceptibilities in a Strongly Coupled Quark-Gluon Plasma
• Thermodynamics of charmed hadrons across chiral crossover from lattice QCD
• Transverse dynamics of charmed hadrons in ultra-relativistic nuclear collisions
• Thermal D mesons from anisotropic lattice QCD
• Persistence of charmed hadrons in QGP from lattice QCD
• Can charm fluctuation be a better probe to study QCD critical point?
• The thermodynamics of heavy light hadrons at freezeout
• Recent theoretical developments on QCD matter at finite temperature and density
• Lattice QCD at Non-Zero Temperature
• Testing Charm Quark Equilibration in Ultra-High Energy Heavy Ion Collisions with Fluctuations
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• Flavored aspects of QCD thermodynamics from Lattice QCD