Comments on the observation of high multiplicity events at the LHC

Understand

We analyze the structure of the high multiplicity events observed by the CMS collaboration at the LHC.

• We argue that the bulk of the observed correlations is due to the production of a pair of jets with p_t > 15 GeV/c.
• We also suggest that high multiplicity events are due to a combination of three effects: high underlying multiplicity for collisions at small impact parameters, upward fluctuations of the gluon density in the colliding protons, and production of hadrons in the fragmentation of dijets.
• The data analysis is suggested which may clarify the underlying dynamics of the high multiplicity events and probe fluctuations of the gluon field as a function of x.