https://doi.org/10.1140/epjc/s10052-022-10565-w
Regular Article - Theoretical Physics
Light-by-light scattering at future
colliders
1
Theoretical Particle Physics and Cosmology Group, Physics Department, King’s College London, WC2R 2LS, London, UK
2
National Institute of Chemical Physics and Biophysics, Rävala 10, 10143, Tallinn, Estonia
3
Theoretical Physics Department, CERN, CH1211, Geneva 23, Switzerland
4
Physics Department, School of Applied Mathematical and Natural Sciences, National Technical University of Athens, Zografou Campus, 157 80, Athens, Greece
5
Experimental Physics Department, CERN, CH1211, Geneva 23, Switzerland
6
DAMTP, University of Cambridge, Wilberforce Road, CB3 0WA, Cambridge, UK
7
Cavendish Laboratory, University of Cambridge, J.J. Thomson Avenue, CB3 0HE, Cambridge, UK
b
nikolaos.mavromatos@kcl.ac.uk
Received:
7
April
2022
Accepted:
22
June
2022
Published online:
23
July
2022
We study the sensitivity of possible CLIC and FCC-ee measurements of light-by-light scattering to old and new physics, including the Heisenberg–Euler Lagrangian in the Standard Model with possible contributions from loops of additional charged particles or magnetic monopoles, the Born–Infeld extension of QED, and effective dimension-8 operators involving four electromagnetic field strengths as could appear in the Standard Model Effective Field Theory. We find that FCC-ee measurements at 365 GeV and CLIC measurements at 350 GeV would be sensitive to new physics scales of half a TeV in the dimension-8 operator coefficients, and that CLIC measurements at 1.4 TeV or 3 TeV would be sensitive to new physics scales TeV or 5 TeV at 95% CL, corresponding to probing loops of new particles with masses up to
TeV for large charges and/or multiple species. Within Born–Infeld theory, the
CL sensitivities would range from
GeV to 1.3 or 2.8 TeV for the high-energy CLIC options. Measurements of light-by-light scattering would not exclude monopole production at FCC-hh, except in the context of Born–Infeld theory.
© The Author(s) 2022
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