On the role of magnetic field in photon excess in heavy ion collisions

Abstract

Synchrotron photon spectrum in heavy-ion collisions is computed taking into account the spatial and temporal structure of magnetic field. It is found that a significant fraction of photon excess in heavy-ion collisions in the region $k_{\perp }=1-3$GeV can be attributed to the synchrotron radiation. Azimuthal anisotropy of the synchrotron photon spectrum is characterized by the Fourier coefficients $v_2=4/7$ and $v_4=1/10$ that are independent of photon momentum and centrality.

arXiv comment9 pages, 3 figures

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• Effect of magnetic field on the photon radiation from quark-gluon plasma in heavy ion collisions
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• Photon production and elliptic flow from momentum-anisotropic quark-gluon plasma
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• Gluon polarization tensor in a magnetized medium: Analytic approach starting from the sum over Landau levels
• Centrality dependence of photon yield and elliptic flow from gluon fusion and splitting induced by magnetic fields in relativistic heavy-ion collisions
• Electromagnetic currents induced by color fields
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• Thermal corrections to the gluon magnetic Debye mass
• Anisotropic photon emission from gluon fusion and splitting in a strong magnetic background I: The two-gluon one-photon vertex
• Synchrotron radiation by slowly rotating fermions
• Synchrotron radiation of vector bosons at relativistic colliders
• Direct photon spectrum and elliptic flow produced from Pb+Pb collisions at $\sqrt{s_{NN}}=2.76$ TeV at the CERN Large Hadron Collider within an integrated hydrokinetic model
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• Electromagnetic radiation at extreme angular velocity
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• Effect of giant resonances on fluctuations of electromagnetic fields in heavy ion collisions
• Rotating synchrotron radiation: Photon emission from magnetized and rotating quark-gluon plasma
• Prompt photon yield and $v_2$ coefficient from gluon fusion induced by magnetic field in heavy-ion collision