Measurement of the tripledifferential dijet cross section in protonproton collisions at sqrt(s) = 8 TeV and constraints on parton distribution functions
Abstract
A measurement is presented of the tripledifferential dijet cross section at a centreofmass energy of 8 TeV using 19.7 inverse femtobarns of data collected with the CMS detector in protonproton collisions at the LHC. The cross section is measured as a function of the average transverse momentum, half the rapidity separation, and the boost of the two leading jets in the event. The cross section is corrected for detector effects and compared to calculations in perturbative quantum chromodynamics at nexttoleading order accuracy, complemented with electroweak and nonperturbative corrections. New constraints on parton distribution functions are obtained and the inferred value of the strong coupling constant is alpha[S](M[Z]) = 0.1199 +/ 0.0015 (exp) 0.0020 +0.0031 (theo), where M[Z] is the mass of the Z boson.
 Publication:

arXiv eprints
 Pub Date:
 May 2017
 DOI:
 10.48550/arXiv.1705.02628
 arXiv:
 arXiv:1705.02628
 Bibcode:
 2017arXiv170502628C
 Keywords:

 High Energy Physics  Experiment
 EPrint:
 Replaced with the published version. Added the journal reference and DOI. All the figures and tables can be found at http://cmsresults.web.cern.ch/cmsresults/publicresults/publications/SMP16011 (CMS Public Pages)