2015/07/31 by Fabio Maltoni, Davide Pagani, Ioannis Tsinikos · 3 citations
Physics and Astronomy · #Boson #Electron #Hadron #High-Energy Particle Collisions Research #Large Hadron Collider #Lepton #Nuclear physics #Order (exchange) #Particle Detector Development and Performance #Particle physics #Particle physics theoretical and experimental studies #Parton #Parton shower #Physics #Production (economics) #Quantum chromodynamics #Standard Model (mathematical formulation) #Top quark #hep-ex #hep-ph
paper · pdf · doi:10.1007/jhep02(2016)113
44 pages, 23 figures. Version published on JHEP, typos in Table 5 have been corrected
openalex publication_date 2016/02/01 · arxiv created 2016/04/04 · arxiv updated 2016/04/05 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We study the production of a top-quark pair in association with one and two vector bosons, ttV and ttV\kern0.1em V with V = γ, Z, W ±, at the LHC. We provide predictions at next-to-leading order in QCD for total cross sections and top-quark charge asymmetries as well as for differential distributions. A thorough discussion of the residual theoretical uncertainties related to missing higher orders and to parton distribution functions is presented. As an application, we calculate the total cross sections for this class of processes (together with ttH and tttt production) at hadron colliders for energies up to 100 TeV. In addition, by matching the NLO calculation to a parton shower, we determine the contribution of ttV and ttV\kern0.1em V to final state signatures (two-photon and two-same-sign-, three-and four-lepton) relevant for ttH analyses at the Run II of the LHC.