Effective Restoration of the U_A(1) symmetry in the SU(3) linear sigma model

Abstract

The effective restoration of the chiral U(A)(1) symmetry in strong interactions is studied using the linear chiral SU(3)xSU(3) model at finite temperatures. We find that the disappearance of the chiral anomaly causes a considerable change in the meson mass spectrum. We propose several signals for detecting this chiral phase in ultrarelativistic heavy-ion collisions: The eta/pi0 ratio is enhanced by an order of magnitude, the a0 is suppressed in the K+K- mass spectrum, and the scalar kappa meson appears as a peak just below the K*(892) in the invariant piK mass spectrum.

4 pages, RevTeX, 3 postscript figures, new figure with spectral function, references to NJL model added, discussion about scalar meson mass spectrum and lattice data modified, editorially approved for publication in Phys. Rev. Lett

Cited by in corpus (35)

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• Mixing of scalar tetraquark and quarkonia states in a chiral approach
• Chiral symmetry restoration in linear sigma models with different numbers of quark flavors
• Scalar-pseudoscalar meson behavior and restoration of symmetries in SU(3) PNJL model
• K*0 production in Cu+Cu and Au+Au collisions at \sqrt{s_NN} = 62.4 GeV and 200 GeV
• Strong and electromagnetic decays of the light scalar mesons interpreted as tetraquark states
• Fluctuations and the axial anomaly with three quark flavors
• Hadronic resonance production in $d$+Au collisions at $\sqrt{s_{{}_{NN}}}$ = 200 GeV at RHIC
• $K^{\star }(892{)}^0$ Production in Relativistic Heavy Ion Collisions at $\sqrt{s_{{}_{NN}}}=130$ GeV
• Analysis of U${}_A$(1) symmetry-breaking and restoration effects on the scalar-pseudoscalar spectrum
• Topological susceptibility at zero and finite temperature in the Nambu-Jona-Lasinio model
• Meson Masses and Mixing Angles in 2+1 Flavor Polyakov Quark Meson Sigma Model and Symmetry Restoration Effects
• $\varphi$ meson self-energy in nuclear matter from $\varphi N$ resonant interactions
• Effective restoration of the U_A(1) symmetry with temperature and density
• U_A(1) Anomaly in Hot and Dense QCD and the Critical Surface
• Influence of the U(1)_A Anomaly on the QCD Phase Transition
• $\eta$ and ${\eta }^{\prime }$ mesons in the Dyson-Schwinger approach at finite temperature
• Functional Renormalization for Chiral and U_A(1) Symmetries at Finite Temperature
• Comparing symmetry restoration trends for meson masses and mixing angles in the QCD-like three quark flavor models
• Topological Susceptibility in Three-Flavor Quark Meson Model at Finite Temperature
• η' Multiplicity and the Witten-Veneziano relation at finite temperature
• Phase Diagram, Scalar-Pseudoscalar Meson Behavior and Restoration of Symmetries in (2+1) Polyakov-Nambu-Jona-Lasinio Model
• Exploring axial $U(1)$ restoration in a modified 2+1 flavor Polyakov quark meson model
• K*(892)0 Production in Relativistic Heavy Ion Collisions at sqrt(s_NN) = 130 GeV
• Impact of baryon resonances on the chiral phase transition at finite temperature and density
• $K^{\ast }(892)$ Production in Au+Au and pp Collisions at $\sqrt{s_{NN}}$ = 200GeV at STAR
• Effects of the Regularization on the Restoration of Chiral and Axial Symmetries
• New Insight about the Effective Restoration of U_A(1) Symmetry
• Large N_c, chiral approach to M_eta' at finite temperature
• Effect of momentum anisotropy on quark matter in the quark-meson model
• Domain Wall in the Linear Sigma Model
• Effective restoration of chiral and axial symmetries at finite temperature and density
• Behavior of the topological susceptibility at finite T and $\mu$ and signs of restoration of chiral symmetries