We note that the diffraction cone shrinkage might result from unitarization only, i.e. there is no need to introduce it into an input amplitude ab initio.

We briefly comment on the ridge-like structure origin in the nuclear and hadronic reactions emphasizing that this structure in the two-particle correlation function can result from the rotation of the transient state of matter.

In this article the author name Luigi Calligaris was incorrectly written as A. Calligaris. The original article has been corrected.

No abstract

This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.-2-JHEP08(2017)035 The CMS collaboration