LHCB EXPERIMENT, CERN / SCIENCE PHOTO LIBRARY LHCB EXPERIMENT, CERN / SCIENCE PHOTO LIBRARY
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Particle tracks from a proton-proton collision seen by the LHCb (large hadron collider beauty) 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). The collision (turquoise circle) produced a lambda baryon (dark blue line). This then decayed (1st blue ellipse) into a charmed lambda particle (dark blue line), a neutrino (not seen) and a muon (purple line). The charmed lambda is then seen decaying into a pion (light blue line), kaon (red line) and proton (yellow line).
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