Photon production from gluon splitting and fusion induced by a magnetic field of arbitrary strength in relativistic heavy-ion collisions

@misc{ayala2026photon,
  title = {{Photon production from gluon splitting and fusion induced by a magnetic field of arbitrary strength in relativistic heavy-ion collisions}},
  author = {Alejandro Ayala and Santiago Bernal-Langarica and José Jorge Medina-Serna and Ana Julia Mizher},
  howpublished = {arXiv},
  year = {2026},
  month = nov,
  doi = {10.48550/arxiv.2608.21600},
  eprint = {2608.21600},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2608.21600},
}

TY  - UNPB
TI  - Photon production from gluon splitting and fusion induced by a magnetic field of arbitrary strength in relativistic heavy-ion collisions
AU  - Alejandro Ayala
AU  - Santiago Bernal-Langarica
AU  - José Jorge Medina-Serna
AU  - Ana Julia Mizher
PY  - 2026
DA  - 2026/11/03
PB  - arXiv
DO  - 10.48550/arxiv.2608.21600
UR  - https://arxiv.org/abs/2608.21600
AB  - We compute the yield and elliptic flow coefficient for photons produced during the pre-equilibrium stage of semi-central relativistic heavy-ion collisions from the gluon fusion and splitting processes induced by the presence of a magnetic field. The calculation is performed for arbitrary values of the field strength. The pre-equilibrium gluon distribution is modeled with a glasma-inspired Bose-Einstein occupation factor, as well as with an anisotropic distribution that accounts for the rapid initial expansion along the beam axis. In both cases, we find a very good agreement between the calculation and the experimental data from PHENIX. Most notably, the shape and strength of the elliptic flow coefficient are described quite well, representing a step towards solving the outstanding photon puzzle.
ER  -