Jisho

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粒子
Wikipedia definition
1. Sigma baryonThe Sigma baryons are a family of subatomic hadron particles which have a +2, +1 or -1 elementary charge or are neutral. They are baryons containing three quarks: two up and/or down quarks, and one third quark, which can be either a strange (symbols Σ+, Σ0, Σ−), a charm (symbols Σ++c, Σ+c, Σ0c), a bottom (symbols Σ+b, Σ0b, Σ−b) or a top (symbols Σ++t, Σ+t, Σ0t) quark.
Read “Sigma baryon” on English Wikipedia
Read “シグマ粒子” on Japanese Wikipedia
Read “Sigma baryon” on DBpedia

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