The landscape of $W^{\pm}$ and $Z$ bosons produced in $pp$ collisions up to LHC energies

Eduardo Basso , Claude Bourrely (1) , Roman Pasechnik , Jacques Soffer

1 CPT - Centre de Physique Théorique - UMR 7332

We consider a selection of recent experimental results on electroweak W±,Z gauge boson production in pp collisions at BNL RHIC and CERN LHC energies in comparison to prediction of perturbative QCD calculations based on different sets of NLO parton distribution functions including the statistical PDF model known from fits to the DIS data. We show that the current statistical PDF parametrization (fitted to the DIS data only) underestimates the LHC data on W±,Z gauge boson production cross sections at the NLO by about 20%. This suggests that there is a need to refit the parameters of the statistical PDF including the latest LHC data.

Mots clés: Electroweak gauge bosons; Drell–Yan process; Parton distribution functions; Brookhaven RHIC Coll; CERN LHC Coll; p p: scattering; W: production; Z0: production; electroweak interaction; Drell-Yan process; parton: distribution function; quantum chromodynamics: perturbation theory

Domaines: Physique des Hautes Energies - Phénoménologie [hep-ph]

Eduardo Basso, Claude Bourrely, Roman Pasechnik, Jacques Soffer. The landscape of $W^{\pm}$ and $Z$ bosons produced in $pp$ collisions up to LHC energies. Nucl.Phys.A, 2017, 966, pp.113-123. ⟨10.1016/j.nuclphysa.2017.06.035⟩. ⟨hal-01582386⟩