Mellin–Barnes integrals and the method of brackets Ivan Gonzalez, Igor Kondrashuk, Victor H. Moll and Luis M. Recabarren Eur. Phys. J. C, 82 1 (2022) 28 Published online: 11 January 2022 DOI: 10.1140/epjc/s10052-021-09977-x