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The weak magnetic field effect on dilepton polarization in heavy-ion collisions
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The measurement of the magnetic field created in high-energy heavy-ion collisions is challenging, due the the fact that the magnetic field decays so drastically that in a thermalized quark-gluon plasma the field strength becomes rather weak. By incorporating the weak magnetic effect into the medium, and especially into the production formalism of dileptons from the quark-gluon plasma, the effect of dilepton polarization is studied through the dilepton angular distribution. We find that the anisotropic coefficients in the dilepton spectrum are quite sensitive to the orientation and strength of the weak field. Accordingly, these coefficients provide ideal probes for the magnetic field in realistic experiments.
Forward citations
Cited by 2 Pith papers
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Thermal Dilepton Polarization under Rotation or Magnetic Field in Heavy-ion Collisions
Vorticity and magnetic fields induce characteristically different dilepton polarization spectra via modified quark propagators, with λ_θ decreasing monotonically under rotation but oscillating under magnetic fields du...
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Asymmetric muon-antimuon emission from $Z^0$ decays: a clear magnetometer in relativistic heavy-ion collisions
A proposal that Z0 to mu+ mu- decays in a strong magnetic field produce negative v2 and harder antimuon pT, offering a potential early-field magnetometer.
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