CP violation

CP violation is a violation of either charge-parity symmetry or charge-conjugation-parity symmetry.

11 results

Probing matter–antimatter asymmetry with AI

Using a cutting-edge AI algorithm, the CMS collaboration has obtained the first evidence of CP violation in the decay of the strange beauty meson into a pair of muons and a pair of electrically charged kaons

News
Physics
30 April, 2024

Searching for new asymmetry between matter and antimatter

LHCb has conducted a new search for matter–antimatter asymmetry using its full data sets from the first and second runs of the LHC

News
Physics
11 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

Probing fundamental symmetries of nature with the Higgs boson

The ATLAS collaboration tested Higgs-boson interactions with the carriers of the weak force, looking for signs of charge-parity symmetry violation

News
Physics
21 April, 2023

Searching for matter–antimatter asymmetry with the Higgs boson

The ATLAS and CMS collaborations have searched for matter–antimatter asymmetry in the interaction between the Higgs boson and the tau lepton

News
Physics
23 June, 2022

Largest matter-antimatter asymmetry observed

New results from the LHCb experiment on CP asymmetry in charmless three-body charged B meson decays include the largest CP asymmetry ever observed

News
Physics
18 March, 2022

LHCb sees new form of matter–antimatter asymmetry in strange beauty particles

The LHCb collaboration has observed time-dependent matter–antimatter asymmetry in the decays of strange beauty particles into charged kaons

News
Physics
06 October, 2020

Searching for matter–antimatter asymmetry in the Higgs boson–top quark interaction

The ATLAS and CMS collaborations used the full LHC Run 2 dataset to obtain new insights into the interaction

News
Physics
29 April, 2020

Happy birthday, Jack Steinberger

Jack Steinberger, Nobel Prize in Physics 1988 and one of the pioneers of neutrino research, celebrates his 95th birthday today.

News
Accelerators
25 May, 2016
Accelerators
News
25 May, 2016

Fifty years of CP violation

In the summer of 1964, the results of an experiment studying neutral kaons at Brookhaven Laboratory took the particle-physics community by surprise

News
Physics
05 August, 2014
Physics
News
05 August, 2014

LHCb experiment observes new matter-antimatter difference

The LHCb collaboration has made the first observation of matter-antimatter asymmetry in the decays the B<sup>0</sup><sub>s</sub>

News
Physics
24 April, 2013