Production of negative xi particle

Production of negative xi particle

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Credit: LAWRENCE BERKELEY NATIONAL LABORATORY/ SCIENCE PHOTO LIBRARY

Caption: The production & decay of a negative xi particle, one of the 'strange' particles, is seen in this coloured streamer chamber photograph. A negative kaon has interacted at the foot of the photo with a proton in the gas filling the chamber; this produces (left to right) a positive pion, a negative pion, a positive kaon, & the negative xi. The xi travels only a short way before decaying into a negative pion, which veers to the right, & a lambda. The neutral lambda is invisible; it decays almost immediately to a proton & a negative pion. The blob on the proton track is an artefact. The xi is also known as the cascade particle.

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Keywords: cascade particle, high-energy physics, image, kaons, lambda particle, lawrence berkeley laboratory, particle physics, particle tracks, photo, pions, strange particle, streamer chamber photograph, subatomic particles, the particle odyssey, xi particle

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