Second anniversary of the Higgs boson discovery!

4th July 2014 – It’s been two years since the ATLAS and CMS experiments at CERN jointly announced the discovery of a new boson consistent with the Higgs particle of the Standard Model. Since then, the Higgs boson has been intensely examined. We’ve measured its spin, its mass, its lifetime, and observed its decay into bosons and fermions. In the next run of the Large Hadron Collider, we hope to learn more about how it interacts with other particles and to make many more precise measurements of its properties. By doing, we hope to extend the limits of our current understanding of the fundamental components of nature, and to seek clues for discovery.

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The Symphony of ATLAS

23rd June 2014 – Bringing the nine-storey high, many-layered ATLAS detector back to life and preparing it for the Large Hadron Collider's next run is a complex task. Each sub-detector is setup and thoroughly tested before they are joined and the detector as a whole can begin recording data again.

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Are You Up for the Higgs Challenge?

16th June 2014 – It's been four weeks since the four-month long Higgs Machine Learning Challenge was announced. Almost 700 teams have signed up and more than 200 have beaten the in-house benchmark already.

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Higgs Mass to String Balls

6th June 2014 – ATLAS presented new results at the Large Hadron Collider Physics (LHCP) Conference in Columbia University, New York, 2 to 7 June. Many new searches and improved measurements were presented, among which were an updated Higgs boson mass measurement, a search for double Higgs boson production and new searches for Supersymmetry and exotic phenomena.

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A New Sub Detector for ATLAS

2nd June 2014 – Closest to the beam pipe where particle collisions will occur in the very heart of ATLAS, a new sub-detector – the Insertable B-Layer – was put in place on 7 May. The IBL team had been developing and practicing the insertion procedure and tooling for two years because of the operation’s delicate nature.

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New Results from ATLAS at Quark Matter 2014

30th May 2014 – ATLAS has prepared a variety of new results for the Quark Matter 2014 conference using lead-lead (Pb+Pb) and proton-lead (p+Pb) data collected during Run1. 

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ATLAS Book Wins the IPPY Awards

29th May 2014 – "Hunting the Higgs", published by Papadakis Publishers in collaboration with the ATLAS Experiment won the Bronze prize in the Science category of the Independent Publisher Book Awards. 

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ATLAS Cavern Banjo Video Wins Third Place

27th May 2014
Joe Izen playing the banjo during the early hours of the morning in the ATLAS Control Room during the Large Hadron Collider's first run. (Image: Steven Goldfarb/CERN)


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"A hard day, with so much beauty"

13th May 2014 – ATLAS physicists travelled with Physics Without Frontiers 2014, a project run by International Centre for Theoretical Physics (ICTP), to three Palestinian universities this April to share the joy of scientific research with 140 students. 

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ATLAS Connects with Science Fest Visitors

29th April 2014 – On 5 and 6 April, Michigan State University's ATLAS physicists who are based at CERN connected virtually via video-conference to visitors attending the annual Science Festival in East Lansing, USA, to talk about particle physics and what it is like to be a physicist.

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ATLAS to present new results at Moriond

14th March 2014 – ATLAS collaborators and other scientists will be presenting new findings at the two weeks of the Rencontres de Moriond conferences, which starts on 15 March, at La Thuile in Italy.

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Five Outstanding Students Win ATLAS Thesis Awards

25th February 2014The ATLAS Thesis Awards recognize some of our postdoctoral colleagues who have made exceptional contributions to the experiment, across all areas, in the context of a PhD thesis. 

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ATLAS PhD Grant Scholars Announced

13th February 2014 – The first recipients of the ATLAS PhD Grant were presented with a certificate on 11 February at CERN by the programme’s selection committee. The three scholars, Lailin Xu of China, Josefina Alconada of Argentina, and Gagik Vardanyan of Armenia, were delighted at being able to continue their PhD programmes at CERN.

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Dealing With Data

16th January 2014 – In the first run of the Large Hadron Collider, almost a billion proton-proton collisions took place every second in the centre of the ATLAS detector. That amounts to enough data to fill 100,000 CDs each second. If you stacked the CDs on top of each other, in a year it would reach the moon four times. Only a small fraction of the observed proton–proton collisions have interesting characteristics that might lead to discoveries. How does ATLAS deal with this mountain of data? 

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Higgs Into Fermions

26th November 2013 – The ATLAS experiment released preliminary results on 26 Nov 2013 that show evidence, with a significance of 4.1 standard deviations that the Higgs boson decays to two taus, which are fermions. This is exciting news. But what makes this measurement important?

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Full Coverage for ATLAS Muons

29th October 2013 – Hold out your hand and in one minute hundreds of muons will have passed through your palm. Muons are one of the high-energy cosmic ray particles that can pass through most solid structures – even the ATLAS detector’s calorimeter, which is designed to absorb particles and measure their energy. A specific system is required to measure muons. Until now, the ATLAS muon system was almost completed, but not quite. The last of the 62 chambers in the Extended Endcap (EE) region was installed just before summer this year.

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Crowds at ATLAS for CERN Open Days

2nd October 2013 – More than 70,000 people visited CERN Open Days over the weekend, with 20,000 going underground to see the LHC tunnel and the detectors. Of these, an estimated 5,000 people visited the ATLAS exhibits aboveground, and another 2,500 had the opportunity to see the ATLAS detector.

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Sharing the excitement of discovery

23rd September 2013
OPEN DAY 2008: Visitors at CERN's previous Open Day before the start of the first LHC run. (Image: Claudia Marcelloni/ATLAS Experiment)


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High-flying physics

11th September 2013Pernilla Craig earned her licence to fly last year aged just 17, making her one of UK’s youngest female pilots. A visit to CERN last week took her deep underground to see dectectors on the Large Hadron Collider (LHC), and into the sky above the Alps for a bird's eye view of the laboratory.

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New searches for SUSY

20th July 2013 – ATLAS today presented new searches for Supersymmetry, a theory that could explain the large amount of dark matter in the universe.

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