Proton collision

Proton collision

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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 electromagnetic calorimeter (short red lines) and the hadron calorimeter (blue rectangles). Among the particles produced was a strange bottom meson, which consists of a bottom antiquark bound with a strange quark. The particle was not seen, but is revealed through its decay products; a pair of muons (long red lines). The green lines show the energy deposited by the muons in the detector’s muon chambers (red rectangles).

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Keywords: apparatus, black background, cern, chambers, cms, collision, compact muon solenoid, cosmological, cosmology, decay products, electromagnetic calorimeter, european particle physics laboratory, experiment, fundamental particles, geneva, hadron calorimeter, large hadron collider, lhc, matter, muon chamber, muon pair, muons, particle accelerator, particle detector, particle physics, particle track, physical, physics, proton proton collision, proton-proton, research, strange bottom meson, structure of matter, subatomic particles, switzerland, trace, traces, tracks, trajectories, trajectory

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