Standard Model

The Standard Model of particle physics is a theory concerning the electromagnetic, weak, and strong nuclear interactions, which mediate the dynamics of the known subatomic particles. It was developed throughout the latter half of the 20th century, as a collaborative effort of scientists around the world.

36 results

ATLAS probes uncharted territory with LHC Run 3 data

The ATLAS collaboration has released its first results from searches for new physics phenomena conducted with data from Run 3 of the LHC

News
Physics
26 July, 2024

The CMS experiment at CERN measures a key parameter of the Standard Model

With this measurement the LHC is again demonstrating its ability to provide very high-precision measurements and bringing new insights into an old mystery

News
Physics
03 April, 2024

LHCb tightens precision on key measurements of matter–antimatter asymmetry

The LHCb collaboration’s new measurements of matter–antimatter asymmetry in decays of beauty particles are the most precise yet of their kind

News
Physics
13 June, 2023

LHC experiments see first evidence of a rare Higgs boson decay

The ATLAS and CMS collaborations have joined forces to establish the first evidence of the rare decay of the Higgs boson into a Z boson and a photon

News
Physics
26 May, 2023

LHCb brings leptons into line

Simultaneous measurements of rare B-meson decays using the full LHC Run 1 and 2 data samples agree with the predictions of the Standard Model, superseding previous results that had indicated intriguing departures from the 50-year old theory

News
Physics
20 December, 2022
Physics
News
20 December, 2022

ATLAS measures Higgs boson’s decay width

The decay width is linked to the particle’s lifetime and if found to deviate from its predicted value could indicate the presence of new physics

News
Physics
18 November, 2022
Physics
News
18 November, 2022

ATLAS seeks out unusual signatures of long-lived particles

Physicists at the ATLAS experiment are on the hunt for new, long-lived particles to help explain several outstanding mysteries of our Universe

News
Physics
22 March, 2022

Searching for the unknown

In the final part of the “LHC Physics at Ten” series, we look at the searches that go beyond our current understanding of the universe

Feature
Physics
05 March, 2021
Physics
Feature
05 March, 2021

Intriguing new result from the LHCb experiment at CERN

The LHCb results strengthen hints of a violation of lepton flavour universality

News
Physics
23 March, 2021

Standard Model surprises at high energies

In the seventh part of the “LHC Physics at Ten” series, we look at the surprising phenomena of the Standard Model at high energies

Feature
Physics
16 December, 2020
Physics
Feature
16 December, 2020