Particle tracks (pi-mu-e decay)

Particle tracks (pi-mu-e decay)

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This image is part of the feature Particle Art

Credit: PROF. G. PIRAGINO/SCIENCE PHOTO LIBRARY

Caption: Streamer chamber photo of a pion-muon-electron (pi-mu-e) decay chain resulting from an antiproton annihilation. The antiproton enters from the bottom of the picture & annihilates with a proton in neon gas filling the chamber; their energy materialises as 3 nuclear fragments (thick tracks) & several pions (less dense tracks). One positive pion curls tightly to the right in the chamber's magnetic field before decaying to a muon; the muon forms the spiral at top before decaying to a positron (or anti-electron). At each decay the tracks change direction sharply, indicating emission of an unseen neutrino. Photo taken at Experiment PS 179 at CERN, Geneva.

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Keywords: antiproton, black and white, black-and-white, electron, high-energy physics, image, images, impact event force energy, magnified image, microscopic photos, monochrome image, motion action, move movement moving, muon, particle physics, particle track, photo, pi-mu-e decay, pion, positron, streamer chamber, subatomic particle, subjects, the particle odyssey

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