1 Erratum to: Eur. Phys. J. C (2019) 79:974 https://doi.org/10.1140/epjc/s10052-019-7491-z

There is a small change in the reference of [1], which was reference [20] in the original article. The authorship of Dr. Nicolai Friis who was a co-author on an early version of the manuscript has been withdrawn before the submission to the journal due to some scientific disagreement. Therefore, the author information of the reference has been corrected.