https://doi.org/10.1140/epja/s10050-023-01201-6
Regular Article - Theoretical Physics
Ellipticity of dilepton production from a hot and magnetized hadronic medium
1
Variable Energy Cyclotron Centre, 1/AF Bidhannagar, 700064, Kolkata, India
2
Government General Degree College Kharagpur-II, 721149, Paschim Medinipur, West Bengal, India
3
Saha Institute of Nuclear Physics, 1/AF Bidhannagar, 700064, Kolkata, India
4
Homi Bhabha National Institute, Training School Complex, Anushaktinagar, 400085, Mumbai, India
c snigdha.physics@gmail.com, snigdha@ggdckharagpur2.ac.in
Received:
12
June
2023
Accepted:
27
November
2023
Published online:
9
December
2023
We study the azimuthal angle and transverse momentum dependence of dilepton production from hot and magnetized hadronic matter using 
-meson dominance. The thermomagnetic spectral function of the is evaluated using the real time method of thermal field theory and Schwinger proper-time formulation. A continuous spectrum is obtained in which there is sizeable Landau cut contributions in the low invariant mass region as a consequence of finite background field. The emission rate of the dileptons is found to be significantly anisotropic in this region and the later effectively increases with the strength of the background field. In addition, we also evaluate the elliptic flow parameter (
) as a function of invariant mass for different values of magnetic field and temperature. We find that in low invariant mass region remains positive at lower values of eB signifying that the production rate could be larger along the direction transverse to the background field. This behaviour is consistent with the angular dependence of dilepton production rate.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
