New constraints on the values of the fundamental constants at a look-back time of 7.3 Gyr Renzhi Su, Stephen J. Curran, Françoise Combes, Neeraj Gupta, Sebastien Muller, Di Li and Minfeng Gu A&A, 698 (2025) A154 Published online: 13 June 2025 DOI: 10.1051/0004-6361/202453407