Measurement of angular and momentum distributions in multi-jet final states at $\sqrt{s}$ = 8 TeV and 13 TeV at the LHC

We study two kinematic observables that test jet correlations using multi- jet events collected in pp collisions at the LHC. Using events with three or more jets, we study the ratio of the transverse momentum of the third jet to the second jet and the angular separation between the second and third jet. The data are compared to theoretical predictions from event generators. The measurements use $19.8~\mathrm{fb}^{-1}$ and $2.29~\mathrm{fb}^{-1}$ of data collected by the CMS experiment at the center-of-mass energies of $8~\mathrm{TeV}$ and $13~\mathrm{TeV}$, respectively.