Positron-hydrogen scattering: internal consistency and threshold behaviour for excited states Igor Bray, Ivan Kalinkin, Dmitry V. Fursa, Alisher S. Kadyrov, Harin B. Ambalampitiya and Ilya I. Fabrikant Eur. Phys. J. D, 77 11 (2023) 194 Published online: 10 November 2023 DOI: 10.1140/epjd/s10053-023-00778-3