Searching for anomalous quartic gauge couplings at muon colliders using principal component analysis Yi-Fei Dong, Ying-Chen Mao and Ji-Chong Yang Eur. Phys. J. C, 83 7 (2023) 555 Published online: 01 July 2023 DOI: 10.1140/epjc/s10052-023-11719-0