https://doi.org/10.1140/epjc/s10052-024-13422-0
Regular Article
Prospects for detecting the couplings of axion-like particle with neutrinos at the CEPC
1
Department of Physics, Liaoning Normal University, 116029, Dalian, China
2
Center for Theoretical and Experimental High Energy Physics, Liaoning Normal University, Dalian, China
Received:
25
June
2024
Accepted:
25
September
2024
Published online:
8
October
2024
We explore the possibility of detecting the couplings of axion-like particle (ALP) with leptons from their loop-level impact on the ALP couplings to electroweak (EW) gauge bosons via the signal process 
at the circular electron positron collider (CEPC) and obtain prospective sensitivities to the ALP-lepton couplings. Our numerical results show that the CEPC with the center of mass energy 
GeV and the integrated luminosity 
might be sensitive for probing the ALP-lepton couplings in the ALP mass range from 10 GeV to 130 (50) GeV, where the prospective sensitivities to the ALP-neutrino coupling 
can be as low as 0.016 (0.012) 
and 
for 
and 
, and to the ALP-charged lepton coupling 
can be as low as 0.035 (0.07) for 
. We find that the prospective sensitivities given by the CEPC are not covered by the current and expected exclusion regions in some ALP mass intervals. The CEPC has the potential for exploring the ALP-neutrino couplings via some promising processes induced by the ALP-EW gauge boson couplings in the future.
© The Author(s) 2024
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