arXiv subjects

K. Djamaa

Publications and source records attributed to K. Djamaa.

3 recordsLinked to original sources

arXiv2021

NLO QCD corrections to Higgs boson production in association with gauge bosons in proton-proton collisions at sqrt(s) = 14 TeV

We suggest some predictions for Standard Model Higgs boson production in association with gauge bosons in proton-proton collisions at sqrt(s) = 14 TeV. Our calculation includes the NLO QCD corrections to these processes using MadGraph5_aMC@NLO event generator. We study the impacts of these corrections on the total cross sections and various kinematical distributions.

hep-ph↗

arXiv2020

NLO QCD corrections to the processes pp $\rightarrow $ ZZ with 0, 1 and 2 jets at the LHC

We propose an implementation of ZZ, ZZj and ZZjj productions in MadGraph5_aMC@NLO framework at $\sqrt{s}$ = 14 TeV. We calculate these processes at leading order and next-to-leading order with QCD corrections and we present a theoretical prediction of their total cross sections with different cuts in transverse momentum of jets, including gluon fusion contributions. In the same time we estimate their theoretical uncertainty. We discuss the various kinematical distributions spectrums at partonic level and hadronic level applying the showering and hadronization using Pythia8. In order to reconstruct the events similar to that found at LHC, we use the ATLAS cards and the fast detector simulation Delphes.

hep-ph↗

arXiv2020

The production of gauge bosons pairs $W^+W^-$ associated with 0, 1 and 2 jets in proton-proton collisions at LHC

We report in this work the production of $W^+W^-$ pairs gauge bosons associated with 0, 1 and 2 jets in proton-proton collisions at LHC with an energy of 14 TeV in the center of mass. These processes are produced at leading-order (LO) and next-to-leading-order (NLO) with QCD corrections in the standard model, using MadGraph5@aMC. For a realistic description of the processes, we match the hard scattering processes with Pythia8 parton showering and hadronization. The obtained events are run through the fast detector simulation, Delphes, which serves to accurately model the ATLAS and CMS detectors and the final state reconstructions that are performed. We analyze the total cross sections according on two cuts in jet transverse momentum p T,j > 20 GeV and p T,j > 100 GeV. We describe the important numerical aspects of our calculations by presenting transverse momentum and rapidity distributions at partonic fixed order and at parton shower for both W and the $W^+W^-$ pair.

hep-ph↗