Strangeness

Property of elementary particles

In particle physics, strangeness (symbol S) is a property of particles, expressed as a quantum number, for describing decay of particles in strong and electromagnetic interactions that occur in a short period of time. The strangeness of a particle is defined as: S = − ( n s − n s ¯) {\displaystyle S=-(n_{\text{s}}-n_{\bar {\text{s}}})} where ns represents the number of strange quarks (s) and ns represents the number of strange antiquarks (s). Evaluation of strangeness production has become an important tool in search, discovery, observation and interpretation of quark–gluon plasma (QGP).

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