XUV transient absorption study of coherent hole oscillation in Ar+RemoveNisnat Chakraborty, Miguel A. Alarcón, Michael P. McDonnell, Karl Hauser, Islam Shalaby, Dipayan Biswas, James K. Wood, Nikolay V. Golubev, and Arvinder SandhuPhys. Rev. A 113, 023104 (2026)