W particle decay. Computer graphic display of an event from the UA1 detector at CERN,the European particle physics laboratory outside Geneva,show- ing the decay of a W particle into an electron (blue track) & a neutrino (reconstructed blue track going upwards & ending in arrow),with other particle tracks in yellow & red. The W,which lives too briefly to be visible,was created in a high-energy proton-antiproton collision in CERN's Super-Proton-Synchrotron collider. A gauge boson & one of the carriers of the weak force,the W's 1983 discovery at CERN helped confirm the "electr- oweak" theory unifying the electromagnetic & weak forces. The UA1 detector is outlined in red. (Run 6069,Event 228) | |
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Crédit: | Science Photo Library / Parker, David |
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