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arXiv · 2604.18685

Extremely high-energy bremsstrahlung in matter

Peter Arnold·Joshua Bautista·Omar Elgedawy·Shahin Iqbal
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Abstract

The theory of bremsstrahlung $e \to e\gamma$ by extremely high energy electrons passing through ordinary matter has been qualitatively incomplete. We revisit the suppression of bremsstrahlung by the Landau-Pomeranchuk-Migdal (LPM) effect, here accounting for quantum disruption of that effect from pair production. Our analysis covers the full range of ultra-relativistic electron and photon energies (subject to a few simplifying approximations).

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Peter Arnold, Joshua Bautista, Omar Elgedawy, Shahin Iqbal. 2026-04-20. Extremely high-energy bremsstrahlung in matter. https://arxiv.org/abs/2604.18685

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