1 Erratum to: Eur. Phys. J. C (2020) 80:952 https://doi.org/10.1140/epjc/s10052-020-08526-2

Author Ehsan Hatefi has just the following affiliation:

Scuola Normale Superiore and I.N.F.N., Piazza dei Cavalieri 7, 56126, Pisa, Italy.