Electroweak corrections to $e^+e^-\to\gamma\gamma$ as a luminosity process at FCC-ee
Abstract
We consider large-angle two photon production in annihilation as a possible process to monitor the luminosity of a future circular collider (FCC-ee). We review and assess the status of the theoretical accuracy by performing a detailed phenomenological study of next-to-leading order electroweak corrections and leading logarithmic QED contributions due to multiple photon radiation. We also estimate the impact of photonic and fermion-loop corrections at next-to-next-to-leading order and the uncertainty induced by the hadronic contribution to the vacuum polarization. Possible perspectives to address the target theoretical accuracy are briefly discussed.
Cite
@article{arxiv.1906.08056,
title = {Electroweak corrections to $e^+e^-\to\gamma\gamma$ as a luminosity process at FCC-ee},
author = {Carlo M. Carloni Calame and Mauro Chiesa and Guido Montagna and Oreste Nicrosini and Fulvio Piccinini},
journal= {arXiv preprint arXiv:1906.08056},
year = {2019}
}
Comments
13 pages, 3 figures, 3 tables. Extended version, with theoretical details and further numerical results, of the contribution to the workshop proceedings arXiv:1905.05078 by the same authors. v2: minor text modification, one reference added