Hadroproduction of electroweak gauge boson plus jets and TMD parton density functions

Abstract

If studies of electroweak gauge boson final states at the Large Hadron Collider, for Standard Model physics and beyond, are sensitive to effects of the initial state's transverse momentum distribution, appropriate generalizations of QCD shower evolution are required. We propose a method to do this based on QCD transverse momentum dependent (TMD) factorization at high energy. The method incorporates experimental information from the high-precision deep inelastic scattering (DIS) measurements, and includes experimental and theoretical uncertainties on TMD parton density functions. We illustrate the approach presenting results for production of W-boson + n jets at the LHC, including azimuthal correlations and subleading jet distributions.

arXiv comment9 pages, 4 figures. v2: comments and references added, typos corrected; results unchanged

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• Lam-Tung relation breaking in $Z^0$ hadroproduction as a probe of parton transverse momentum
• Single bottom quark production in kT-factorisation
• Impact of gluon polarization on Higgs plus jet production at the LHC
• Resummation effects in forward production of Z0+jet at LHC
• Transverse-momentum-dependent quark splitting functions in $k_T$-factorization: real contributions
• $\psi (2S)$ and ${\rm Y}(3S)$ hadroproduction in the parton Reggeization approach: Yield, polarization, and the role of fragmentation
• Z boson production in proton-lead collisions at the LHC accounting for transverse momenta of initial partons
• Transverse momentum dependent parton densities in processes with heavy quark generations
• Back-to-back azimuthal correlations in Z+jet events at high transverse momentum in the TMD parton branching method at next-to-leading order
• TMD gluon distributions for multiparton processes
• Associated production of $Z$ bosons and $b$-jets at the LHC in the combined $k_T$ + collinear QCD factorization approach
• Azimuthal correlations of high transverse momentum jets at next-to-leading order in the parton branching method
• Charm quark and meson production in association with single-jet at the LHC
• Transverse momentum dependent parton densities in a proton from the generalized DAS approach
• Inclusive Higgs boson production at the LHC in the kt-factorization approach
• Single inclusive jet production and the nuclear modification ratio at very forward rapidity in proton-lead collisions with $\sqrt{s_{NN}}$ = 5.02 TeV
• Numerical evaluation of multi-gluon amplitudes for High Energy Factorization
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• On relation between Parton Branching Approach and CCFM evolution
• $k_T$-factorization approach to the Higgs boson production in $Z{Z}^{\ast }\to 4\ell$ channel at the LHC
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• Associated Higgs + jet(s) production at the LHC and CCFM gluon dynamics in a proton
• TMD parton densities in associated real and virtual photon and jet production at LHC
• Dijet photoproduction at low $x$ at next-to-leading order and its back-to-back limit