Decay of a bottom quark

Decay of a bottom quark

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Credit: TASSO EXPERIMENT, DESY/OXFORD NUCLEAR PHYSICS LABORATORY/SCIENCE PHOTO LIBRARY

Caption: Computer display of the decay of a bottom quark in the TASSO detector at the DESY particle physics lab, Hamburg. The display shows a cross-section of the detector in which an electron & a positron, accelerated in DESY's PETRA collider, have met & annihilated at the centre. Their energy remater- ialises as a number of particles, including a bot- tom quark which immediately combines with an anti- quark to form a B meson. The meson lives much too briefly to be visible, but careful analysis shows its presence. One of the clues is track 3, a muon which penetrates the outer layers of the detector to reach the muon detector (blue bar at top).

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Keywords: b meson, bottom quark, computer screen, desy, electronic display, particle physics research, quark, tasso experiment

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