The CMS Collaboration has completed the most precise measurement to date of top-quark production in association with a photon
Using the full Run 2 dataset of the LHC and advanced machine learning techniques, the CMS Collaboration has delivered the…
The CMS experiment reports a new measurement of the Higgs boson mass in the decay into two photons, improving the precision of this result over earlier measurements by refining detector calibration and new analysis techniques.
The mass of the…
For the first time, the CMS experiment has observed the rare electroweak production of two Z bosons in association with two jets. This achievement completes the observation of all electroweak productions of vector boson pairs (WW, WZ, and ZZ…
The CMS experiment provides the first confirmation of the excess observed in top quark-antiquark production that is consistent with the short-lived bound state – toponium – decaying to a lepton + jets final state.
Most matter around us is…
The CMS experiment has performed a new search for Charge-Parity violation in Higgs boson decays to tau leptons, shedding light on the origin of matter.
Since its discovery in 2012, the Higgs boson has helped scientists explore some of the Universe’…
For the first time, the CMS experiment probes quantum entanglement in Higgs boson decays to a pair of Z bosons. The result is the most general analysis of kinematic distributions in the four-lepton final state, measuring spin correlations and…
For the first time ever, the CMS experiment has designed a dedicated analysis using parametrised machine learning to look for new dark particles that don’t socialize with Standard Model fermions, one of them being a favourite candidate in the…
The CMS experiment utilises cutting-edge machine learning techniques to search for microscopic, quantum black holes and other exotic objects that evaporate in an instant.
Black holes are amongst the most fascinating objects in the universe.…
Upon close inspection, the tetraquark family members are consistent with tightly bound diquark pairs
The CMS Collaboration has identified three extremely rare same-flavor teraquark states and determined, based on their spin-parity configuration,…
Using data collected from 2016 to 2023 and cutting-edge machine learning, CMS observes for the first time the creation of a top quark together with a W and a Z boson – a process so rare it occurs only once in a trillion proton-proton…
In the first search of its kind at a particle collider, the CMS experiment looks for partially visible sprays of particles (jets), containing leptons and dark matter using physics-informed machine learning.
Can we shed light on dark matter?…
CMS scientists are on the hunt for a new, heavy particle that decays into a pair of Higgs bosons. Using the final state with two bottom quarks and two tau leptons, the search sets the most stringent limits to date in the mass range 1.4–4.5…