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ATLAS to Present Updated Higgs Analysis Results in Upcoming Joint CERN / ICHEP Seminar
29 June 2012

The ATLAS Experiment will be presenting its most recent results from searches for the Higgs Boson at the LHC in a dedicated seminar to be held at CERN on 4 July at 9:00 CET.

The preliminary results, to be presented alongside those of CMS, are a significant update from earlier publications, as they will include the analysis of 8 TeV proton collision data recorded so far in 2012.

Previous measurements, based on 7 TeV proton collision data recorded in 2011, limited the mass of the Higgs at 95% confidence to a narrow range between about 115.5 GeV and 131 GeV, and a small excess of events above the expected background was seen by both ATLAS and CMS around 126 GeV.

The seminar will be held in the CERN Amphitheatre with a direct video link for physicists attending the ICHEP 2012 conference in Melbourne, Australia, and a public webcast on http://cern.ch/webcast. Registered journalists will be able to view the webcast in the CERN Council Chamber and a press conference will shortly follow.

The Higgs Boson is a key component of the Standard Model, a highly successful theory that provides a very precise description of matter. Identification of the Higgs Boson would be a major accomplishment, providing physicists with a better understanding of the mechanism that gives mass to elementary particles and opening the door to a variety of new physics searches.

ATLAS Event Display Animations and Images
  Candidate four-muon event (2011) [animation]
  Candidate two-electron, two-muon event (2011) [animation]
  Candidate two-photon event (2011) [animation]
  Candidate four-muon event (2011) [image]
  Candidate two-electron, two-muon event (2011) [image]
  Candidate four-muon event (2011) [image]
  More ATLAS Event Images [web portal] [even more]
  More ATLAS Multimedia Material [web portal]

Background Material on the Higgs Boson
  The Origin of Mass [text]
  The Higgs Mechanism [animation]
  Explanation of Higgs Mass Limit Plot (Brazil Plot) [text, image]
  LHC Backgrounder on Higgs: General Information: [text]
  LHC Backgrounder on Higgs: Glossary of Terms: [text]
  LHC Backgrounder on Higgs: Evolution or Revolution? [text]
  Physics World Interview with Peter Higgs [text, audio]
  Explanation of Look-Elsewhere Effect by CMS [text]
  CERN Interview with ATLAS and CERN Experts [video]

Other Sources of Information from ATLAS
  ATLAS Home Page [web portal]
  ATLAS Live Webcast Streams [web portal]
  ATLAS on Social Media [Twitter] [Google +] [Facebook] [YouTube]
  ATLAS Blog [web portal]

Some Fun
  Jon Butterworth on Why Does the Higgs Decay? [Guardian Article]
  What would happen if you put your hand in the LHC? [60 Symbols Video]
  The ATLAS Boogie (How we really find the Higgs!) [YouTube Video]

ATLAS event containing four muons. This event is consistent with coming from two Z particles decaying: both Z particles decay to two muons each. Such events are produced by Standard Model processes without Higgs particles. They are also a possible signature for Higgs particle production, but many events must be analysed together in order to tell if there is a Higgs signal. This view is a zoom into the central part of the detector. The four muons are picked out as red tracks. Other tracks and deposits of energy in the calorimeters are shown in yellow.


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