https://doi.org/10.1140/epjc/s10052-025-15136-3
Regular Article - Theoretical Physics
Analysis of axion-like particles in a top-quark pair production at the CLIC
1
Department of Physics, Sivas Cumhuriyet University, 58140, Sivas, Turkey
2
A.A. Logunov Institute for High Energy Physics, NRC “Kurchatov Institute”, 142281, Protvino, Russian Federation
a
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Received:
17
July
2025
Accepted:
1
December
2025
Published online:
22
December
2025
We examine a contribution of axion-like particles (ALPs) to a top pair production via the collision of Compton backscattered photons at the CLIC operating in a 
mode. The exclusion bounds on the ALP-top quark coupling depending on the ALP mass 
are given. The mass range 10 GeV–10 TeV is considered. We have obtained that for 
GeV the ALP-top quark couplings are as small as 0.17 
and 0.11 can be probed at the CLIC with the energy of 1.5 TeV and 3 TeV, respectively. A comparison with other constraints on the ALP-top coupling is given.
© The Author(s) 2025
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