Effects of chiral symmetry restoration on meson and dilepton production in relativistic heavy-ion collisions

Larionov, A. B.; von Smekal, L.

doi:10.48550/arxiv.2109.03556

Cited by 2 publications

(2 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The combined Lagrangian has sometimes been used in baryon spectroscopy [76,77] and as a model for chiral symmetry restoration scenario at high temperature or density, where baryons with non-zero mass do not vanish upon a chiral restoration, see e.g. [78][79][80][81] and references therein. Depending on the parameters the chiral restoration transition can be either of first or second oder [78].…”

Section: Baryonic Parity Doublet Matter and Its Symmetriesmentioning

confidence: 99%

Chiral spin symmetry and the QCD phase diagram

2022

View full text Add to dashboard Cite

Lattice QCD simulations with chirally symmetric quarks have recently established approximate $$SU(2)_{CS}$$ S U ( 2 ) CS and $$SU(2N_F)$$ S U ( 2 N F ) symmetries of the quantum effective action in a temperature range above the chiral crossover $$T_\textrm{ch}$$ T ch , in which color-electric interactions between quarks dominate the dynamics. We show that such an intermediate temperature range between the chirally broken and plasma regimes is fully consistent with published screening mass spectra, which demonstrate the breakdown of thermal perturbation theory at the crossover between the partonic and the chiral spin symmetric regime at $$T_s\sim (2-3)T_\textrm{ch}$$ T s ∼ ( 2 - 3 ) T ch . From the known behavior of screening masses with baryon chemical potential, we deduce qualitatively how this chiral spin symmetric band extends into the QCD phase diagram. In the cold and dense region, we propose parity doubled baryons as possible candidates for chiral spin symmetric matter. This represents a special case of quarkyonic matter with confinement and restored chiral symmetry, and can smoothly transform to quark matter at sufficiently high densities. Finally, we discuss the potential of dilepton spectra to identify such matter forms.

show abstract

Section: Baryonic Parity Doublet Matter and Its Symmetriesmentioning

confidence: 99%

Chiral spin symmetry and the QCD phase diagram

2022

View full text Add to dashboard Cite

show abstract

“…The combined Lagrangian has sometimes been used in baryon spectroscopy [70,71] and as a model for chiral symmetry restoration scenario at high temperature or density, where baryons with nonzero mass do not vanish upon a chiral restoration, see e.g. [72][73][74][75] and references therein. Depending on the parameters the chiral restoration transition can be either of first or second oder [72].…”

Section: Baryonic Parity Doublet Matter and Its Symmetriesmentioning

confidence: 99%

Chiral spin symmetry and the QCD phase diagram

Glozman¹,

Philipsen²,

Pisarski³

2022

Preprint

View full text Add to dashboard Cite

Lattice QCD simulations with chirally symmetric quarks have recently established approximate SU (2)CS and SU (2NF ) symmetries of the quantum effective action in a temperature range above the chiral crossover T ch , in which color-electric interactions between quarks dominate the dynamics. We show that such an intermediate temperature range between the chirally broken and plasma regimes is fully consistent with published screening mass spectra, which demonstrate the breakdown of thermal perturbation theory at the crossover between the partonic and the chiral spin symmetric regime at Ts ∼ (2 − 3)T ch . From the known behavior of screening masses with baryon chemical potential, we deduce qualitatively how this chiral spin symmetric band extends into the QCD phase diagram. In the cold and dense region, we propose parity doubled baryons as possible candidates for chiral spin symmetric matter. This represents a special case of quarkyonic matter with confinement and restored chiral symmetry, and can smoothly transform to quark matter at sufficiently high densities. Finally, we discuss the potential of dilepton spectra to identify such matter forms.

show abstract

Effects of chiral symmetry restoration on meson and dilepton production in relativistic heavy-ion collisions

Cited by 2 publications

References 37 publications

Chiral spin symmetry and the QCD phase diagram

Chiral spin symmetry and the QCD phase diagram

Chiral spin symmetry and the QCD phase diagram

Contact Info

Product

Resources

About