6533b823fe1ef96bd127e165
RESEARCH PRODUCT
ZZ production at the LHC: Fiducial cross sections and distributions in NNLO QCD
Massimiliano GrazziniStefan KallweitDirk Rathlevsubject
Nuclear and High Energy Physics530 Physics010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyFOS: Physical sciences10192 Physics Institute01 natural scienceslcsh:QC1-999High Energy Physics - ExperimentHigh Energy Physics - Experiment (hep-ex)High Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)0103 physical sciencesHigh Energy Physics::Experiment3106 Nuclear and High Energy Physics010306 general physicslcsh:Physicsdescription
We consider QCD radiative corrections to the production of four charged leptons in the ZZ signal region at the LHC. We report on the complete calculation of the next-to-next-to-leading order (NNLO) corrections to this process in QCD perturbation theory. Numerical results are presented for $\sqrt{s}=8$ TeV, using typical selection cuts applied by the ATLAS and CMS collaborations. The NNLO corrections increase the NLO fiducial cross section by about $15\%$, and they have a relatively small impact on the shape of the considered kinematical distributions. In the case of the $\Delta\Phi$ distribution of the two Z candidates, the NNLO corrections improve the agreement of the theoretical prediction with the CMS data.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-11-01 | Physics Letters B |