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arXiv · 2211.02390

Precision Measurement of Trident Production in Strong Electromagnetic Fields

Christian F. Nielsen·Robert Holtzapple·Mads M. Lund·Jeppe H. Surrow·Allan H. Sørensen·Ulrik I. Uggerhøj
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Abstract

We demonstrate experimentally that the trident process $e^-\rightarrow e^-e^+e^-$ 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 $\chi$ 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.

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Christian F. Nielsen, Robert Holtzapple, Mads M. Lund, Jeppe H. Surrow, Allan H. Sørensen, Ulrik I. Uggerhøj. 2022-11-04. Precision Measurement of Trident Production in Strong Electromagnetic Fields. https://doi.org/10.1103/physrevlett.130.071601

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