Production of $W^{+}{W}^{-}$ pairs via ${\gamma }^{\ast }{\gamma }^{\ast }\to W^{+}{W}^{-}$ subprocess with photon transverse momenta

Abstract

We discuss production of $W^{+}{W}^{-}$ pairs in proton-proton collisions induced by two-photon fusion including, for a first time, transverse momenta of incoming photons. The unintegrated inelastic fluxes (related to proton dissociation) of photons are calculated based on modern parametrizations of deep inelastic structure functions in a broad range of their arguments ($x$ and $Q^2$). In our approach we can get separate contributions of different $W$ helicities states. Several one- and two-dimensional differential distributions are shown and discussed. The present results are compared to the results of previous calculations within collinear factorization approach. Similar results are found except of some observables such as e.g. transverse momentum of the pair of $W^{+}$ and $W^{-}$. We find large contributions to the cross section from the region of large photon virtualities. We show decomposition of the total cross section as well as invariant mass distribution into polarisation states of both W bosons. The role of the longitudinal $F_L$ structure function is quantified. Its inclusion leads to a 4-5 % decrease of the cross section, almost independent of $M_{WW}$.

arXiv comment20 pages, 17 figures, 2 tables

References in corpus (18)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• Parton distributions for the LHC
• Automatized One-Loop Calculations in 4 and D dimensions
• Parton distributions with QED corrections
• Parton distributions incorporating QED contributions
• How bright is the proton? A precise determination of the photon parton distribution function
• The Photon Content of the Proton
• Sensitivity to anomalous quartic gauge couplings in photon-photon interactions at the LHC
• The photon PDF from high-mass Drell Yan data at the LHC using xFitter
• The photon PDF from high-mass Drell Yan data at the LHC
• The photon PDF determination within the xFitter framework
• Central ${\mu }^{+}{\mu }^{-}$ production via photon-photon fusion in proton-proton collisions with proton dissociation
• $W^{+}{W}^{-}$ pair production in proton-proton collisions: small missing terms
• Nonpartonic components in the nucleon structure functions at small Q^2 in a broad range of x
• QCD diffractive mechanism of exclusive $W^{+}{W}^{-}$ pair production at high energies
• Coupling WW, ZZ unitarized amplitudes to $\gamma \gamma$ in the TeV region
• On the range of validity of the QCD-improved parton model
• Effective-Lagrangian approach to gamma gamma --> WW; I: Couplings and amplitudes

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