G. Aad, B. Abbott, D. C. Abbott, A. Abud, B. Ali, K. Augsten, B. Bergmann, T. Billoud, Z. Hubáček, S. Mondal et al.: A search for an unexpected asymmetry in the production of e(+)mu(-) and e(-)mu(+) pairs in proton-proton collisions recorded by the ATLAS detector at root s=13 TeV. Physics Letters B 830, 137106 (2022). doi:10.1016/j.physletb.2022.137106