News

ATLAS reveals key results at ICHEP 2018

Feynman. Salam. Weinberg. For the past 50 years, the International Conference on High­Energy Physics (ICHEP) has been the meeting place of giants in the field. Now, a new type of giant dominates: the thousands­-strong collaborations of Large Hadron Collider (LHC) physicists.

News | 17th July 2018

Summary of new ATLAS results for ICHEP 2018

The 2018 International Conference on High Energy Physics (ICHEP) kicked off this week in Seoul, South Korea. The ATLAS Collaboration will be unveiling a wide range of new results at ICHEP 2018, including major developments in the measurement of Higgs boson properties, observations of key electroweak production processes, new high precision tests of the Standard Model, and combinations of searches extending the reach to new physics.

News | 5th July 2018

The Higgs boson: the hunt, the discovery, the study and some future perspectives

Many questions in particle physics are related to the existence of particle mass. The “Higgs mechanism,” which consists of the Higgs field and its corresponding Higgs boson, is said to give mass to elementary particles.

Feature | 4th July 2018

Highlights from LHCP2018

Physicists from around the globe assembled this week at the Centre Domenico in Bologna, Italy, the site of Europe’s oldest university, to attend the sixth annual conference on Large Hadron Collider Physics (LHCP2018). The 425 participants enjoyed picturesque architecture, world-renowned cuisine, and a full menu of recent physics results from the LHC. A sample platter of a few of the tasty morsels is presented.

News | 11th June 2018

ATLAS observes direct interaction of Higgs boson with top quark

The ATLAS Collaboration at CERN has announced the observation of Higgs bosons produced together with a top-quark pair. Observing this extremely rare process is a significant milestone for the field of High-Energy Physics. It allows physicists to test critical parameters of the Higgs mechanism in the Standard Model of particle physics.

Press Statement | 4th June 2018

Are you up for the TrackML challenge?

Physicists from the ATLAS, CMS and LHCb collaborations have just launched the TrackML challenge – your chance to develop new machine learning solutions for the next generation of particles detectors.

News | 4th May 2018

ATLAS starts new year of data-taking

On 28 April, the ATLAS Experiment began recording the first data for physics of 2018. This will be the final year of Run 2 operation of the Large Hadron Collider and will mark the conclusion of the rich 13 TeV data harvest. Starting in 2019, the accelerator and its experiments will enter a long upgrade and maintenance period.

News | 30th April 2018

Hands-on particles: Schools worldwide analyse ATLAS data

Every spring, hundreds of universities around the world open their doors to high-school students for a day to give them hands-on experience in particle physics. The International Masterclass programme gives students the chance to use real data collected by the ATLAS detector and other LHC experiments to test the Standard Model and search for new particles.

News | 23rd April 2018

Beyond discovery: ATLAS explores the Higgs boson

The ATLAS Collaboration at CERN has released new studies of the Higgs boson using 13 TeV data collected in 2015 and 2016. The results further corroborate the Standard Model nature of the Higgs boson, and open doors to fresh searches for new physics.

News | 11th April 2018

ATLAS on track for 2018 data taking

It’s kick off at the Large Hadron Collider! Proton beams are circulating once again in the accelerator, marking the start of a new year of exploration for the ATLAS experiment.

News | 31st March 2018

New winners of the ATLAS Thesis Awards

The ATLAS Collaboration has over 5500 members in 182 institutions around the globe. But, did you know that over 1000 of these members are PhD students? ATLAS PhD students contribute strongly and critically to all areas of the experiment, while learning valuable skills for their degrees.

News | 27th February 2018

First high-precision measurement of the mass of the W boson at the LHC

In a paper published today in the European Physical Journal C, the ATLAS Collaboration reports the first high-precision measurement at the Large Hadron Collider (LHC) of the mass of the W boson. This is one of two elementary particles that mediate the weak interaction – one of the forces that govern the behaviour of matter in our universe. The reported result gives a value of 80370±19 MeV for the W mass, which is consistent with the expectation from the Standard Model of Particle Physics, the theory that describes known particles and their interactions.

Press Statement | 12th February 2018

Explore virtual CERN with ATLAScraft

Enter the world of particle physics with the newly-launched ATLAScraft! Players can explore the CERN campus, shrink down to the size of a particle, and even conduct their own “experiments” in educational minigames.

News | 13th December 2017

Broken symmetry: searches for supersymmetry at the LHC

A commentary by ATLAS physicists Paul de Jong and George Redlinger on the history, progress and future of the search for supersymmetry.

Feature | 8th December 2017

Behind the scenes at ATLAS Week

A few times a year, the large LHC collaborations such as ATLAS organise an internal overview session. This photo essay will take you to the most recent of these “ATLAS Weeks” – giving you a glimpse behind the curtain, and exploring this essential part of the collaboration structure and life.

News | 6th November 2017

Noble nuclei open new doors in ATLAS physics

Take something you think you understand, change it and see what happens. Earlier this month, the ATLAS Experiment put this basic scientific principle to the test during the first Large Hadron Collider (LHC) xenon run.

News | 31st October 2017

ATLAS LIVE: Celebrating 25 years of discovery

To celebration of its 25th anniversary, ATLAS is hosting a series of Facebook live events today, Monday 2 October 2017. Explore key locations around CERN - including the ATLAS control room, Building 40 and the ATLAS TileCal workshop - while learning about the physics, construction and history of the ATLAS Experiment.

News | 2nd October 2017

On top of the top: ATLAS highlights from the TOP2017 workshop

The ATLAS collaboration presented exciting new results at the 10th International Workshop on Top Quark Physics (TOP2017), held in Braga (Portugal). The conference, which concluded today, brought together experimental and theoretical physicists specializing in the heaviest known elementary particle: the top quark.

News | 22nd September 2017

ATLAS sees first direct evidence of light-by-light scattering at high energy

Physicists from the ATLAS experiment at CERN have found the first direct evidence of high energy light-by-light scattering, a very rare process in which two photons – particles of light – interact and change direction. The result, published today in Nature Physics, confirms one of the oldest predictions of quantum electrodynamics (QED).

Press Statement | 14th August 2017

ATLAS highlights from EPS-HEP 2017

The ATLAS Collaboration has presented important new results at the European Physical Society conference on High Energy Physics (EPS-HEP) in Venice (Italy), including the latest analyses of 13 TeV Run 2 data from the Large Hadron Collider (LHC).

News | 12th July 2017

Hunt for Dark Matter in the “Phantom of the Universe”

From the chaotic moments after the Big Bang to present day proton collisions in the ATLAS Experiment, the new planetarium show Phantom of the Universe takes viewers on the hunt for dark matter. The show has been awarded an honourable mention for outstanding and innovative production at the 11th International FullDome Festival in Germany.

News | 21st June 2017

ATLAS kicks off a new year at 13 TeV

Geneva, 23 May 2017. A new season of record-breaking kicked off today, as the ATLAS experiment began recording first data for physics of 2017. This will be the LHC’s third year colliding beams at an energy of 13 tera electron volts (TeV), allowing the ATLAS Experiment to continue to push the limits of physics.

Press Statement | 23rd May 2017

ATLAS highlights from LHCP

The fifth annual Large Hadron Collider Physics (LHCP2017) conference was held this week at Shanghai Jiao Tong University in a leafy suburb in the former French concession in Shanghai, China. This year there were more participants than ever before: 470 people from universities across the globe. ATLAS presented an interesting set of new results exploiting the high statistics of the combined 2015 and 2016 dataset.

News | 23rd May 2017

ATLAS at the starting line

The start of the 2017 run marks the conclusion of a maintenance period known as the Extended Year-End-Technical-Stop (EYETS). This upkeep is vital for the health and well-being of the detector, ensuring that ATLAS can thrive for the months of high-intensity operation that follow.

News | 19th May 2017

Beams return to the ATLAS Experiment

With the year’s first proton beams now circulating in the Large Hadron Collider, physicists have today recorded “beam splashes” in the ATLAS experiment

News | 29th April 2017