Dijet events with large rapidity separation in proton-proton collisions at $\sqrt{s} = 2.76 $ TeV with CMS detector

The new search for Balitsky-Fadin-Kuraev-Lipatov (BFKL) evolution effects is performed at the Large Hadron Collider by the Compact Muon Solenoid experiment. The cross sections for inclusive and Mueller-Navelet dijet production are measured as a function of the rapidity separation between the jets in proton-proton collisions at $\sqrt{s} = 2.76\unit{TeV}$ for jets with transverse momentum $p_{\perp} > 35\unit{GeV}$ and rapidity $\vert y\vert < 4.7$. Various dijet production cross section ratios are also measured. A veto on additional jets with $p_{\perp} > 20\unit{GeV}$ is introduced to improve the sensitivity to the BFKL evolution. The measurement is compared with the predictions of various Monte Carlo models based on leading-order and next-to-leading-order calculations including the Dokshitzer-Gribov-Lipatov-Altarelli-Parisi leading-logarithm (LL) parton shower as well as the LL BFKL resummation.