CERN Accélérateur de science

An event with four identified muons from a proton-proton collision in ATLAS. 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.

Photograph: ATLAS Collaboration
Date: 13 Dec 2011
Subject: Experiments and Tracks
Keywords: ATLAS; Higgs_update_2011; muons; Physics; Event Displays; Proton Collisions; Higgs Candidates; Milestones; Higgs Boson Discovery
Access: DIGITAL