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Symbol s. A property of certain elementary particles called hadrons (K-mesons and hyperons) that decay more slowly than would have been expected from the large amount of energy released in the process. These particles were assigned the quantum number s to account for this behaviour. For nucleons and other nonstrange particles s = 0; for strange particles s does not equal zero but has an integral value. In quark theory (see elementary particles) hadrons with the property of strangeness contain a strange quark or its antiquark.

Subjects: Physics.

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