Spin Polarized Photons and Di-leptons from Axially Charged Plasma
arXiv:1307.8099 · doi:10.1103/PhysRevD.88.114029
Abstract
Axial charge in a QCD plasma is P- and CP-odd. We propose and study P- and CP-odd observables in photon and di-lepton emissions from an axially charged QCD plasma, which may provide possible experimental evidences of axial charge fluctuation and triangle anomaly in the plasma created in heavy-ion collisions. Our observables measure spin alignments of the emitted photons and di-leptons, and are shown to be related to the imaginary part of chiral magnetic conductivity at finite frequency-momentum, which ultimately arises from the underlying triangle anomaly of the QCD plasma with a finite axial charge density. We present an exemplar computation of these observables in strongly coupled regime using AdS/CFT correspondence.
29 pages, 3 figures
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Cited by in corpus (9)
- Chiral Magnetic Effects in Nuclear Collisions
- The Magneto-Sono-Luminescence and its signatures in photon and dilepton production in heavy ion collisions
- Anomalous soft photon production from the induced currents in Dirac sea
- Effect of magnetic fields on pairs of oppositely charged particles in ultrarelativistic heavy-ion collisions
- Spin Polarized Photons from Axially Charged Plasma at Weak Coupling: Complete Leading Order
- Dilepton Helical Production in a Vortical Quark-Gluon Plasma
- Photon radiation in hot nuclear matter by means of chiral anomalies
- Circularly polarized photon emission from magnetized chiral plasmas
- Procedure for measuring particle's circular polarization variation with respect to the reaction plane in relativistic heavy-ion collisions