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Higgs boson event

Higgs boson event

C014/1812

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Credit

CMS EXPERIMENT, CERN / SCIENCE PHOTO LIBRARY CMS EXPERIMENT, CERN / SCIENCE PHOTO LIBRARY

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Editorial use only. This image may not be used to state or imply endorsement by CERN of any product, activity or service.

Caption

Particle tracks from a proton-proton collision seen by the CMS (compact muon solenoid) detector at CERN (the European particle physics laboratory) near Geneva, Switzerland. Before the collision the ions had been accelerated by the large hadron collider (LHC). A large number of particles (orange lines) were created by the collision. The energies of these particles are measured by the hadron calorimeter (blue rectangles). Among the particles produced was a Higgs boson. The particle was not seen, but is revealed through its decay products; a pair of Z bosons that each decay into a pair of muons (long red lines), which were detected by muon chambers (red rectangles). The Higgs boson is thought to give other particles mass. The first sighting of it was announced by scientists at CERN on 4th July 2012.

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