1 Publisher Erratum: Eur. Phys. J. A (2022) 58:172 https://doi.org/10.1140/epja/s10050-022-00822-7

The original online version of this article has been revised. Equation (7) is has been corrected. The p dot \( \hbox{q}/\hbox{p}^2 \) theta symbol before B(p) belongs to the integral on the first line. The rendering problem of Equation (33) is corrected. Equation (49) should read \( \tilde{M}^2 = M^2 - x(1-x)p^2 \). The original article has been corrected.