Comments on the CMS discovery of the "Ridge" in High Multiplicity pp collisions at LHC

TL;DR

This paper discusses the CMS observation of the 'Ridge' phenomenon in high multiplicity proton-proton collisions at the LHC, suggesting it may indicate explosive behavior similar to heavy ion collisions, a long-anticipated discovery.

Contribution

It offers a commentary on the CMS findings, proposing a possible explanation related to high energy density matter explosion in proton-proton collisions.

Findings

CMS observed the 'Ridge' in pp collisions.

The 'Ridge' may indicate explosive behavior in pp.

This could be the first hint of such phenomena in proton collisions.

Abstract

A very recent paper by the CMS collaboration \cite{cms_ridge} has created large discussion in the media, which call it important but did not explain why, in some places even calling it "unundestandable". While it is of course too soon to know what causes the correlations in question, a very similar observation in heavy ion collisions at RHIC has rather simple explanation related to explosion of high energy density matter. Perhaps this observation is the first hint for an explosive behavior in pp, which was anticipated and looked for for decades, yet never been seen.