With increasing instantaneous luminosity at the LHC come additional reconstruction
challenges. At high luminosity, many collisions occur simultaneously within one proton …

Abstract Quark–Gluon Plasma (QGP), a QCD state of matter created in ultra-relativistic
heavy-ion collisions, has remarkable properties including, for example, a low shear viscosity …

This paper presents the observation of four-top-quark (tt¯ tt¯) production in proton-proton
collisions at the LHC. The analysis is performed using an integrated luminosity of 140 fb-1 at …

Results of a search for new physics in final states with an energetic jet and large missing
transverse momentum are reported. The search uses proton-proton collision data …

New sets of CMS underlying-event parameters (“tunes”) are presented for the pythia 8 event
generator. These tunes use the NNPDF3. 1 parton distribution functions (PDFs) at leading …

Abstract We present FeynCalc 9.3, a new stable version of a powerful and versatile
Mathematica package for symbolic quantum field theory (QFT) calculations. Some …

Abstract Measurements of the Standard Model Higgs boson decaying into ab ̄ b bb¯ pair
and produced in association with a W or Z boson decaying into leptons, using proton–proton …

The observation of Higgs boson production in association with a top quark pair (tt¯ H),
based on the analysis of proton–proton collision data at a centre-of-mass energy of 13 TeV …

A search for chargino–neutralino pair production in three-lepton final states with missing
transverse momentum is presented. The study is based on a dataset of s= 13 TeV pp …

A search is presented for four-top-quark production using an integrated luminosity of 139 fb^-
1-1 of proton–proton collision data at a centre-of-mass energy of 13~ TeV 13 TeV collected …