Top-quark pair hadroproduction in association with a heavy boson at NLO+NNLL including EW corrections

Summary, in English

This work studies the associated production of a top-quark pair with a W, Z, or Higgs boson at the LHC. Predictions for the total cross sections as well as for several differential distributions of the massive particles in the final state are provided. These predictions, valid for the LHC operating at 13 TeV, include without any approximation all the NLO electroweak and QCD contributions of O (α^sα^j+1) with i + j = 2, 3. In addition, the predictions presented here improve upon the NLO QCD results by adding the effects of soft gluon emission corrections resummed to next-to-next-to-leading logarithmic accuracy. The residual dependence of the predictions on scale and PDF choices is analyzed.

• Author: Alessandro Broggio; Andrea Ferroglia; Rikkert Frederix; Davide Pagani; Benjamin D. Pecjak; Ioannis Tsinikos
• Department/s: Theoretical Particle Physics - Has been reorganised
• Publishing year: 2019-08-01
• Language: English
• Publication/Series: Journal of High Energy Physics
• Volume: 2019
• Issue: 8
• Links: http://dx.doi.org/10.1007/JHEP08(2019)039
• Document type: Journal article
• Publisher: Springer
• Topic: Subatomic Physics
• Keywords: NLO Computations; QCD Phenomenology
• Status: Published
• ISBN/ISSN/Other: ISSN: 1029-8479