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Precision Measurement of Trident Production in Strong Electromagnetic Fields

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We demonstrate experimentally that the trident process e-→e-e+e- in a strong external field, with a spatial extension comparable to the effective radiation length, is well understood theoretically. The experiment, conducted at CERN, probes values for the strong field parameter χ up to 2.4. Experimental data and theoretical expectations using the local constant field approximation show remarkable agreement over almost 3 orders of magnitude in yield.

Original languageEnglish
Article number071601
JournalPhysical Review Letters
Publication statusPublished - Feb 2023

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© 2023 authors. Published by the American Physical Society.

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