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Creators/Authors contains: "Kidonakis, Nikolaos"

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  1. (, Sissa Medialab)
    Free, publicly-accessible full text available December 17, 2025
  2. ; (, Physics Letters B)
    Free, publicly-accessible full text available January 1, 2026
  3. ; (, Sissa Medialab)
    Free, publicly-accessible full text available December 17, 2025
  4. ; ; ; ; ; ; ; ; (, Sissa Medialab)
    We discuss the impact of eligible top-quark pair production differential cross-section measurements at the LHC with a collision energy of 13 TeV on the parton distribution functions (PDFs) of the proton as well as the impact of approximate next-to-next-to-next-to-leading order (aN3LO) QCD corrections combined with next-to-leading order (NLO) electroweak (EW) corrections on tt¯ observables. We illustrate the effects on the gluon PDF at large x from an optimal baseline selection of data in NNLO global fits, and show comparisons between the theory prediction for tt¯ total and differential cross sections at aN3LO QCD combined with NLO EW and recent measurements from the ATLAS and CMS collaborations at the LHC. 
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    Free, publicly-accessible full text available January 3, 2026
  5. ; (, Journal of High Energy Physics)
    A<sc>bstract</sc> We calculate the complete soft-gluon corrections for the production of colorless final states through N3LO in single-particle-inclusive kinematics. We present explicit analytical results and use them to study higher-order QCD corrections for the production of a heavy charged Higgs pair (H+H−) via quark-antiquark annihilation in the Two-Higgs-Doublet Model at LHC energies. We calculate the NNLO soft-gluon and virtual QCD corrections as well as the N3LO soft-gluon corrections to the total cross section and the charged-Higgs rapidity distribution. This is the first calculation of complete N3LO soft-gluon corrections for a process in single-particle-inclusive kinematics, and the results can be applied to other processes with colorless final states. 
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    Full Text Available 
  6. ; (, The European Physical Journal C)
    Abstract We study higher-order QCD corrections for the production of a top–antitop quark pair ($$t{{\bar{t}}}$$ t t ¯ production) at the Large Hadron Collider in the Standard Model Effective Field Theory. We consider effects of new physics parametrized by the top-quark chromomagnetic dipole operator. We calculate new physics contributions to the total cross section at approximate NNLO, with second-order soft-gluon corrections added to the complete NLO result, including uncertainties from scale dependence and from parton distributions. We also calculate new physics contributions at approximate NNLO for differential distributions in top-quark transverse momentum. 
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  7. ; (, Physics Letters B)
    Full Text Available 
  8. ; ; (, Physical Review D)
    Full Text Available 
  9. (, Physical Review D)
    Full Text Available 
  10. ; (, Physics Letters B)
    Full Text Available