W particle event in ZEUS detector, DESY

Credit: DESY/SCIENCE PHOTO LIRARY

Caption: Production and decay of a W particle in the ZEUS detector at DESY, the German particle physics lab in Hamburg. The computer display shows a cross- section of the central region of the cylindrical detector, blocked out in red and blue. An unseen electron and proton, accelerated in DESY's HERA collider, experience a glancing collision at centre. This creates a W particle, which lives too briefly to be seen but is revealed when it decays to a single electron (track & yellow block) and an invisible neutrino. The two W particles, positive & negative, along with the neutral Z particle, are the carrier particles of the weak nuclear force.

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Keywords: computer screen, desy, electronic display, electrons, gauge bosons, hera collider, high-energy physics, particle physics research, subatomic particles, the particle odyssey, w particle, weak nuclear force, zeus detector

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