W boson

The W boson carries the weak force. It changes the character of particles of matter—allowing the Sun to burn and new elements to form.

25 results

A Nobel ninetieth

Find out how CERN is celebrating the 90th birthday of former Director-General and Nobel Prize laureate Carlo Rubbia, and how you can be involved

News
At CERN
19 September, 2024
At CERN
News
19 September, 2024

CMS experiment at CERN weighs in on the W boson mass

The eagerly awaited result is the most precise measurement of the W mass made at the LHC so far, and is in line with the prediction from the Standard Model of particle physics

Press release
Physics
17 September, 2024
Physics
Press release
17 September, 2024

CERN70: The end of the alphabet

Carlo Rubbia’s name is closely related to the discovery of the W and Z particles at CERN. In 1984, he was awarded the Nobel Prize in Physics, together with Simon van der Meer, for the work he had done as head of the UA1 collaboration

Feature
At CERN
11 July, 2024
At CERN
Feature
11 July, 2024

ATLAS provides first measurement of the W-boson width at the LHC

The measurement is the most precise yet made by a single experiment

News
Physics
10 April, 2024

The delicate balance of lepton flavours

New ATLAS measurement of lepton flavour universality, a key feature of the Standard Model, in decays of the W boson is more precise than all previous measurements combined

News
Physics
26 March, 2024
Physics
News
26 March, 2024

Symposium: Celebrating electroweak milestones | 31 October

CERN Science Gateway will host its first scientific event to celebrate 50 years since Gargamelle discovered neutral currents and 40 years since UA1 and UA2 discovered the W and Z bosons

Announcement
Physics
10 October, 2023
Physics
Announcement
10 October, 2023

Celebrating electroweak milestones at the Science Gateway – save the date!

On 31 October 2023, we mark the 50th anniversary of the observation of neutral currents and the 40th anniversary of the discovery of the W and the Z bosons with a symposium in the new Science Gateway auditorium

Announcement
At CERN
06 July, 2023
At CERN
Announcement
06 July, 2023

Improved ATLAS result weighs in on W boson

An improved ATLAS measurement of the W boson mass is in line with the Standard Model of particle physics

Press release
Physics
23 March, 2023
Physics
Press release
23 March, 2023

W boson turns 40

Forty years ago today, physicists at CERN announced to the world that they had discovered the electrically charged carrier of the weak force, one of nature’s four fundamental forces

News
Physics
25 January, 2023
Physics
News
25 January, 2023

ATLAS measures joint polarisation of carriers of the weak force

Joint-polarisation measurements of the W and Z bosons provide new opportunities to look for physics beyond the Standard Model

News
Physics
14 July, 2022

Higgs10: Three-quarters of the way there

The direct discovery of the W and Z bosons at the SppS in 1983 provided solid experimental support for the existence of the Higgs boson

Feature
Physics
25 May, 2022
Physics
Feature
25 May, 2022