Physics Briefings

Weighing in on the top quark mass

14th June 2016 – ATLAS has released a new precise measurement of the mass of the top quark, the heaviest known elementary particle.

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Stacking the building blocks of the 2016 ATLAS Physics Programme

13th June 2016 – 2016 is set to be an outstanding year for the ATLAS experiment and the Large Hadron Collider. We’re expecting up to 10 times more data compared to 2015, which will allow us to make precise measurements of many known physics processes and to search for new physics.

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The search for the dark side of the Universe

13th April 2016 – ATLAS scientists have just released a new publication with results based on an analysis of the early Run 2 data collected in 2015 using 13 TeV proton-proton collisions. 

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Wanted: SUSY particle still at large

7th April 2016According to classical electrodynamics, the electromagnetic energy (and mass) of a point-like electron should be infinite. This is of course not the case! The solution of the riddle is antimatter - the ‘vacuum’ around every electron is filled with a cloud of electrons and anti-electrons and the combined energy turns out to be finite. 

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Searching beyond the Standard Model with photon pairs

22nd March 2016 – The ATLAS Collaboration uses two selections in this search, one optimised for Higgs-like particles that are expected to have a strong signal compared to background with both photons in the central region of the detector (the “spin-0” selection) and a second optimised for graviton-like particles (the “spin-2” selection) which often have at least one photon close to the LHC proton beam axis. 

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Chasing after elusive B meson decays into muons

22nd March 2016 – Almost four years following the discovery of the Higgs boson, LHC experiments are now more than ever exploring the possibility of new particles and new effects beyond the Standard Model.

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Are there more Higgs bosons?

22nd March 2016 – The results presented by the ATLAS collaboration during the Moriond Electroweak 2016 conference set new limits on a potential extended Higgs sector.

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