Phenomenology of kt-factorization for inclusive Higgs boson production at LHC

Abstract

We investigate the inclusive Higgs boson production in proton-proton collisions at high energies in the framework of kt-factorization QCD approach. The attention is focused on the dominant off-shell gluon-gluon fusion subprocess, where the transverse momentum of incoming gluons are taken into account. The transverse momentum dependent (or unintegrated) gluon densities of the proton are determined using the CCFM evolution equation as well as the Kimber-Martin-Ryskin prescription. We study the theoretical uncertainties of our calculations and perform the comparison with the results of traditional pQCD evaluations. Our predictions agree well with the first experimental data taken by the ATLAS collaboration at the LHC. We argue that further studies of the Higgs boson production are capable of constraining the unintegrated gluon densities of the proton.

Corrected and improved version; conclusions unchanged

References in corpus (10)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Parton distributions for the LHC
• Higgs production via gluon-gluon fusion with finite top mass beyond next-to-leading order
• The CCFM Monte Carlo generator CASCADE 2.2.0
• Transverse momentum dependent gluon density from DIS precision data
• Un-integrated PDFs in CCFM
• Scalar Higgs boson production in a fusion of two off-shell gluons
• Higgs production via gluon fusion from kT-factorisation
• Associated production of Higgs boson and heavy quarks at the LHC: predictions with the kt-factorization

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• Transverse momentum dependent parton densities in processes with heavy quark generations
• Towards the global fit of the TMD gluon density in the proton from the LHC data
• Employing RHIC and LHC data to determine TMD gluon density in a proton
• Inclusive Higgs boson production at the LHC in the kt-factorization approach
• Transverse momentum dependent parton densities in a proton from the generalized DAS approach
• Inclusive production of Higgs boson in the two-photon channel at the LHC within $k_t$-factorization approach and with the Standard Model couplings
• Diffractive Higgsstrahlung
• $k_T$-factorization approach to the Higgs boson production in $Z{Z}^{\ast }\to 4\ell$ channel at the LHC
• Associated Higgs + jet(s) production at the LHC and CCFM gluon dynamics in a proton
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• On the possibility to detect the Higgs decay $H\to b\bar{b}$ in the associated $Z+b\bar{b}$ production at the LHC