2017/08/14 by N. A. Abdulov, A. V. Lipatov, M. A. Malyshev
Physics and Astronomy · #Algorithm #Boson #Factorization #Gluon #Higgs boson #High-Energy Particle Collisions Research #Large Hadron Collider #Nuclear physics #Order (exchange) #Particle physics #Particle physics theoretical and experimental studies #Parton #Physics #Production (economics) #Proton #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #hep-ph
paper · pdf · doi:10.1103/physrevd.97.054017
published as Phys. Rev. D 97, 054017 (2018) · 22 pages, 8 figures
arxiv created 2017/08/14 · openalex created_date 2017/08/31 · openalex publication_date 2018/03/20 · arxiv updated 2018/03/28 · openalex updated_date 2026/08/05
We investigate the inclusive Higgs boson production in proton-proton collisions at the CERN LHC conditions using the kT-factorization approach. Our analysis is based on the dominant off-shell gluon-gluon fusion subprocess (where the transverse momenta of initial gluons are taken into account) and covers H\ensuremath→\ensuremathγ\ensuremathγ, H\ensuremath→ZZ*\ensuremath→4l (where l=e, \ensuremathμ) and H\ensuremath→W+W^\ensuremath-\ensuremath→e^\ifmmode±\else\textpm\fi\ensuremathμ^\ensuremath∓\ensuremathν\ensuremathν decay channels. The transverse momentum dependent (or unintegrated) gluon densities in a proton were derived from Ciafaloni-Catani-Fiorani-Marchesini equation, which resums large logarithmic terms proportional to lns\ensuremath∼ln1/x, important at high energies. As an alternative choice, we apply the Kimber-Martin-Ryskin prescription, where the transverse momentum dependent gluon density is constructed from the known conventional parton distributions. We estimate the theoretical uncertainties of our calculations and compare our results with next-to-next-to-leading-order plus next-to-next-to-leading-logarithmic ones obtained using collinear QCD factorization. Our predictions agree well with the latest experimental data taken by the CMS and ATLAS Collaborations at √(s)=8 and 13 TeV.