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Non-Hermitian electron-positron annihilation under thermal effects

Mar 19, 2025

22 pages

e-Print:

2503.15155 [hep-ph]

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Abstract: (arXiv)

In this paper we examine the thermal effects into the

e^{+}e^{-}\to \ell^{+}\ell^{-}

scattering in a non-hermitian extension of QED. We compute the thermal contributions to this scattering cross-section within the Thermo Field Dynamics approach. In order to highlight the non-hermitian effects we have considered some limits of interest: i) zero-temperature limit and high-energy limit and ii) high-temperature regime. Since this type of scattering possesses accurate experimental data for the cross-section (for muon and tau at the final state) it can be used to set stringent bounds upon the non-hermitian parameters.

Note:

22 pages, 3 figures, accepted for publication in EPJP

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