Associated Higgs + jet(s) production at the LHC and CCFM gluon dynamics in a proton

Abstract

We consider the associated production of Higgs boson and hadronic jet(s) in $pp$ collisions at the LHC for the first time using the $k_T$-factorization approach. Our analysis is based on the off-shell gluon-gluon fusion subprocess, where non-zero transverse momenta of initial gluons are taken into account and covers $H\to \gamma \gamma$, $H\to Z{Z}^{\ast }\to 4l$ (with $l=e,\mu$) and $H\to W^{+}{W}^{-}\to e^{\pm }{\mu }^{\mp }\nu \bar{\nu }$ decay channels. The transverse momentum dependent (TMD) gluon densities in a proton are taken from Catani-Ciafaloni-Fiorani-Marchesini evolution equation. To simulate the kinematics of the produced jets the TMD parton shower implemented into the Monte-Carlo event generator \textsc{cascade} is applied. The comparison of our results with the latest experimental data taken by the CMS and ATLAS Collaborations at $\sqrt{s}=8$ and $13$ TeV and conventional higher-order perturbative QCD calculations is presented. We highlight observables, which are sensitive to the TMD gluon densities in a proton.

14 pages, 6 figures

References in corpus (12)

• NLO Electroweak Corrections to Higgs Boson Production at Hadron Colliders
• A standard format for Les Houches Event Files
• Measurements of properties of the Higgs boson decaying into the four-lepton final state in pp collisions at sqrt(s) = 13 TeV
• Precise QCD predictions for the production of Higgs+jet final states
• The CCFM Monte Carlo generator CASCADE 2.2.0
• NNLO QCD corrections to Higgs boson production at large transverse momentum
• TMDlib and TMDplotter: library and plotting tools for transverse-momentum-dependent parton distributions
• Fiducial and differential cross sections of Higgs boson production measured in the four-lepton decay channel in $pp$ collisions at $\sqrt{s}$=8 TeV with the ATLAS detector
• Hadroproduction of electroweak gauge boson plus jets and TMD parton density functions
• Forward Higgs production within high energy factorization in the heavy quark limit at next-to-leading order accuracy
• Scalar Higgs boson production in a fusion of two off-shell gluons
• Inclusive production of Higgs boson in the two-photon channel at the LHC within $k_t$-factorization approach and with the Standard Model couplings

Cited by in corpus (1)

• TMD parton showers for associated $\gamma$+jet production in electron-proton collisions at high energies