Non-Gaussian effects of the Saha’s ionization in the early universe L. L. Sales, F. C. Carvalho, E. P. Bento and H. T. C. M. Souza Eur. Phys. J. C, 82 1 (2022) 54 Published online: 19 January 2022 DOI: 10.1140/epjc/s10052-022-10003-x