Erratum to: A study of power suppressed contributions in $$J/\psi \rightarrow p{\bar{p}}$$ decay

Few typos and two mistakes has been found in the text of published version paper. Unfortunately these errors provide a strong impact on numerical results therefore some discussed observations changed. The updated includes corrected formulas, conclusions. It is that computed power suppressed contribution provides important effect for observable $$\alpha $$ but absolute value amplitude considerably smaller than one obtained before. estimates are more consistent with effective field theory counting better agreement existing data.