Measurement of multidifferential cross sections for dijet production in proton-proton collisions at

A measurement of the dijet production cross section is reported based on proton-proton collision data collected in 2016 at $$ by the CMS experiment at the CERN LHC, corresponding to an integrated luminosity of up to 36.3 $$ . Jets are reconstructed with the anti- $$ algorithm for distance parameters of $$ and 0.8. Cross sections are measured double-differentially (2D) as a function of the largest absolute rapidity $$ of the two jets with the highest transverse momenta $$ and their invariant mass $$ , and triple-differentially (3D) as a function of the rapidity separation $$ , the total boost $$ , and either $$ or the average $$ of the two jets. The cross sections are unfolded to correct for detector effects and are compared with fixed-order calculations derived at next-to-next-to-leading order in perturbative quantum chromodynamics. The impact of the measurements on the parton distribution functions and the strong coupling constant at the mass of the $$ boson is investigated, yielding a value of $$ .