Search for new particles decaying to dijet at √s=13 TeV proton-proton collisions with data scouting technique at CMS

A search for narrow dijet resonances and a measurement of the dijet invariant mass spectra are presented in this thesis. The dijet mass data are compared to the QCD predictions from PHYTIA. The data from proton-proton collisions at center-of-mass energy of 13 TeV corresponding to an integrated luminosity of 1.9 fb1, recorded with the CMS detector at the Large Hadron Collider (LHC) in 2015. It is required that the pseudorapidity separation of the two leading jets are measured with the CMS detector to satisfy |〖∆η〗_jj |<1.3 with each jet inside the region η_jj<2.5. No significant excesses are observed in data. Also, since there is no evidence for dijet resonances, the upper limits on the resonance cross section at 95% Confidence Level are obtained for gluon-gluon, quark-gluon and quark-quark.