Production rate and ellipticity of lepton pairs from a rotating hot and dense QCD medium
arXiv:2111.05192 · doi:10.1103/PhysRevD.105.054014
Abstract
Using a current-current correlation function (CF), the photon polarization tensor is calculated for a rotating hot and dense QCD medium. The spectral function (SF) and the dilepton rate (DR) are estimated therefrom. Numerical results show that both SF and DR are enhanced in a rotating medium, especially in a low invariant mass region. SF and DR are also explored in the consequences of the interplay among the angular velocity, temperature and chemical potential. We also estimated the electromagnetic screening by calculating the Debye mass and it shows a suppression for a rotating QCD medium. The most interesting observation is the azimuthal anisotropy of the dilepton production, i.e, the elliptic flow of the lepton pair induced by the rotation as an external field. The competition between the centrifugal effect and the spin polarization effect due to rotation results in a convex down behaviour of the elliptic flow as a function of the transverse momentum in a relatively large magnitude of angular velocity. It is noticed that quark spin polarization induces a negative in the case of large angular velocity.
arXiv comment19 pages, 10 captioned figures, Title modified, v2 and Debye mass calculations have been added, Comments are welcome
References in corpus (50)
- The Chiral Magnetic Effect
- The effects of topological charge change in heavy ion collisions: "Event by event P and CP violation"
- Estimate of the magnetic field strength in heavy-ion collisions
- Hydrodynamics with Triangle Anomalies
- Flow Study in Relativistic Nuclear Collisions by Fourier Expansion of Azimuthal Particle Distributions
- Global hyperon polarization in nuclear collisions: evidence for the most vortical fluid
- Chiral Magnetic and Vortical Effects in High-Energy Nuclear Collisions --- A Status Report
- The QCD phase diagram for external magnetic fields
- Quantum field theory in a magnetic field: From quantum chromodynamics to graphene and Dirac semimetals
- QCD quark condensate in external magnetic fields
- Charge separation induced by P-odd bubbles in QCD matter
- Dimensional Reduction and Catalysis of Dynamical Symmetry Breaking by a Magnetic Field
- "Strongly interacting matter in magnetic fields": an overview
- Angular momentum conservation in heavy ion collisions at very high energy
- Testing the chiral magnetic and chiral vortical effects in heavy ion collisions
- Rotating quark-gluon plasma in relativistic heavy ion collisions
- Observation of direct-photon collective flow in sqrt(s_NN)=200 GeV Au+Au collisions
- Vorticity in Heavy-Ion Collisions
- Magnetic field-induced gluonic (inverse) catalysis and pressure (an)isotropy in QCD
- Evidence of spin-orbital angular momentum interactions in relativistic heavy-ion collisions
- Pairing Phase Transitions of Matter under Rotation
- Interacting fermions in rotation: chiral symmetry restoration, moment of inertia and thermodynamics
- Lattice QCD in rotating frames
- Measurement of Direct-Photon Elliptic Flow in Pb-Pb Collisions at sqrt(NN) = 2.76 TeV
- Production and Elliptic Flow of Dileptons and Photons in the semi-Quark Gluon Plasma
- Chiral vortical wave and induced flavor charge transport in a rotating quark-gluon plasma
- Influence of relativistic rotation on the confinement/deconfinement transition in gluodynamics
- Inhomogeneous confining-deconfining phases in rotating plasmas
- Electromagnetic spectral properties and Debye screening of a strongly magnetized hot medium
- Dilepton emission in high-energy heavy-ion collisions with viscous hydrodynamics
- Quark matter under rotation in the NJL model with vector interaction
- QCD matter in extreme environments
- Elliptic flow of thermal dileptons in relativistic nuclear collisions
- Dilepton production rate in a hot and magnetized quark-gluon plasma
- Ellipticity of photon emission from strongly magnetized hot QCD plasma
- Electromagnetic spectral function and dilepton rate in a hot magnetized QCD medium
- Dilepton and photon production in the presence of a nontrivial Polyakov loop
- Dilepton production and elliptic flow from an anisotropic quark-gluon plasma
- Effects of anomalous magnetic moment of quarks on the dilepton production from hot and dense magnetized quark matter using the NJL model
- On the temperature dependence of the electrical conductivity in hot quenched lattice QCD
- Photon polarization tensor in a magnetized plasma: Absorptive part
- Effect of magnetic field on dilepton production in a hot plasma
- QCD phase structure under rotation
- Dilepton Radiation from Strongly Interacting Systems
- Vector meson spectral function and dilepton production rate in a hot and dense medium within an effective QCD approach
- Lepton pair production from a hot and dense QCD medium in the presence of an arbitrary magnetic field
- Spectral function and dilepton rate from a strongly magnetised hot and dense medium in the light of mean field models
- Chiral vortical catalysis
- Elliptic flow of thermal dileptons in event-by-event hydrodynamic simulation
- Dielectron Azimuthal Anisotropy at mid-rapidity in Au+Au collisions at GeV