The discovery of neutrinoless β β decay could soon be within reach. This hypothetical
ultrarare nuclear decay offers a privileged portal to physics beyond the standard model of …

The LHC has provided an unprecedented amount of proton–proton collision data, bringing
forth exciting opportunities to address fundamental open questions in particle physics …

In July 2012, the ATLAS and CMS collaborations at the CERN Large Hadron Collider
announced the observation of a Higgs boson at a mass of around 125 gigaelectronvolts …

The standard model of particle physics,,–describes the known fundamental particles and
forces that make up our Universe, with the exception of gravity. One of the central features of …

Constraints on the Higgs boson self-coupling are set by combining double-Higgs boson
analyses in the bb¯ bb¯, bb¯ τ+ τ− and bb¯ γ γ decay channels with single-Higgs boson …

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 …

We report the first direct observation of neutrino interactions at a particle collider experiment.
Neutrino candidate events are identified in a 13.6 TeV center-of-mass energy pp collision …

The observation of the production of four top quarks in proton-proton collisions is reported,
based on a data sample collected by the CMS experiment at a center-of-mass energy of 13 …

This paper describes the COMBINE software package used for statistical analyses by the
CMS Collaboration. The package, originally designed to perform searches for a Higgs …

Many extensions of the Standard Model predict the production of dark matter particles at the
LHC. Sufficiently light dark matter particles may be produced in decays of the Higgs boson …