Four-top production is one of the rarest processes of the Standard Model observable at the Large Hadron Collider, offering sensitivity to the top Yukawa coupling, Higgs width, and beyond-Standard-Model physics. We present precise predictions for the invariant-mass distribution and total cross section using threshold resummation at next-to-next-to-leading logarithmic (NNLL) accuracy, matched to next-to-leading order (NLO) calculations.
We discuss top quark processes, in particular $tW$ production and top-antitop pair production, as probes of dimension-6 Standard Model Effective Field Theory (SMEFT). We calculate top-quark double differential distributions in transverse momentum and rapidity, and we perform SMEFT fits at LO, NLO and, by adding second-...
We analyze Higgs production at the LHC with a jet veto at central rapidities and present the first next-to-leading logarithmic resummation of non-global logarithms for this process. The resummation combines one-loop hard and soft matching functions with two-loop anomalous dimensions in the large-$N_c$ limit. To perform...
T. Becher, Rebecca von Kuk, Xin-Yu Qin et al.· 0 citations
Heavy Neutral Leptons are a class of hypothetical particle, motivated by simultaneously solving multiple of the standing issues of the Standard Model. In this work we investigate the decay structure of this type of particle in the hadronic picture for multi-body final states. We propose to link the resulting hadronic d...
Hadron production, including pions, kaons and antiprotons, in proton-proton collisions at an energy of 7 TeV at the ALICE facility has been studied. For the data analysis, a generalised parton model was used, which takes into account the interaction of two partons in colliding beams and the production of new particles....
A. Kurepin, E. Karpechev· Journal of Modern Physics· 0 citations
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