Rotating Synchrotron Radiation (RoSyRa): photon emission from magnetized and rotating quark-gluon plasma
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866912903348617216 |
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| author | Buzzegoli, Matteo Busuioc, Sergiu Kroth, Jonathan D. Vijayakumar, Nandagopal Tuchin, Kirill |
| author_facet | Buzzegoli, Matteo Busuioc, Sergiu Kroth, Jonathan D. Vijayakumar, Nandagopal Tuchin, Kirill |
| contents | This paper investigates the production of non-prompt photons originating from rotating synchrotron radiation (RoSyRa), specifically the emission of photons by a rigidly rotating quark-gluon plasma in thermal equilibrium, in the presence of an external magnetic field. We compute the non-prompt photon spectrum and its elliptic flow ($v_2$) at mid-rapidity. In particular, we investigate the finite volume effects. We find that at low transverse momentum, the magnetic field induces a significant $v_2$, while the plasma rotation boosts the synchrotron radiation of negatively charged quarks. These effects account for both the observed excess of direct photons and their elliptic flow, contributing to the resolution of the "direct photon puzzle". |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_13044 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Rotating Synchrotron Radiation (RoSyRa): photon emission from magnetized and rotating quark-gluon plasma Buzzegoli, Matteo Busuioc, Sergiu Kroth, Jonathan D. Vijayakumar, Nandagopal Tuchin, Kirill High Energy Physics - Phenomenology High Energy Physics - Theory Nuclear Theory This paper investigates the production of non-prompt photons originating from rotating synchrotron radiation (RoSyRa), specifically the emission of photons by a rigidly rotating quark-gluon plasma in thermal equilibrium, in the presence of an external magnetic field. We compute the non-prompt photon spectrum and its elliptic flow ($v_2$) at mid-rapidity. In particular, we investigate the finite volume effects. We find that at low transverse momentum, the magnetic field induces a significant $v_2$, while the plasma rotation boosts the synchrotron radiation of negatively charged quarks. These effects account for both the observed excess of direct photons and their elliptic flow, contributing to the resolution of the "direct photon puzzle". |
| title | Rotating Synchrotron Radiation (RoSyRa): photon emission from magnetized and rotating quark-gluon plasma |
| topic | High Energy Physics - Phenomenology High Energy Physics - Theory Nuclear Theory |
| url | https://arxiv.org/abs/2602.13044 |