Jisho

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粒子
Wikipedia definition
1. Delta baryonThe Delta baryons (also called Delta resonances) are a family of subatomic hadron particles which have the symbols Δ++, Δ+, Δ0, and Δ− and electric charges +2, +1, 0 and -1 elementary charge respectively. They are relatively light (1,232 MeV/c) baryons made of only up (u) and down (d) quarks which have spin and isospin ⁄2, as opposed to nucleons which have spin and isospin ⁄2.
Read “Delta baryon” on English Wikipedia
Read “デルタ粒子” on Japanese Wikipedia
Read “Delta baryon” on DBpedia

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