Search for new physics in dijet resonant signatures and recent results from Run2 with the CMS experiment

A search for narrow resonances in proton-proton collisions at a center-of-mass energy of $\sqrt{s}=13$ TeV is presented.The dijet invariant mass distribution of the two leading jets is measured with the CMS detector using early data from Run 2 of the Large Hadron Collider.The dataset presented here was collected in July 2015 and corresponds to an integrated luminosity of 42 pb$^{-1}$.The highest observed dijet mass is 5.4 TeV.The spectrum is well described by a smooth parameterization and no evidence for new particle production is observed.Upper limits at a 95\pct confidence level are set on the cross section of narrow resonances with masses above 1.3 TeV.