https://doi.org/10.1140/epjc/s10052-020-08816-9
Regular Article – Theoretical Physics
Four lepton production and the accuracy of QED FSR
1
Department of Physics and Astronomy, University College London, Gower Street, WC1E 6BT, London, UK
2
Department of Physics, Institute for Particle Physics Phenomenology, Durham University, DH1 3LE, Durham, UK
b
marek.schoenherr@durham.ac.uk
Received:
11
August
2020
Accepted:
28
December
2020
Published online:
19
January
2021
We scrutinise the ability of the primary QED final-state resummation tools, combined with electroweak virtual corrections, to reproduce the exact next-to-leading order electroweak calculation in the four-charged-lepton final state. We further examine the dependence of the findings on the lepton-photon dressing-cone size as well as the resonance identification strategy. Overall we find excellent agreement with the fixed-order result, but partial differences not directly connected with resummation-induced higher-order effects at the few-percent level are observed in some cases, which are relevant for precision measurements.
© The Author(s) 2021
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Funded by SCOAP3
