I don't see any context provided in your message. Could you please share the context material about pions that I should base my overview on?
AI-generated from the Wikipedia summary — may contain errors.
via Wikipedia infobox
{{Infobox Particle | name = Pion | image = Image:Quark structure pion.svg | caption = The quark structure of the positively charged pion. | num_types = 3 | composition = {{plainlist| : : \rm \tfrac{u\overline{u} - d\overline{d}}{\sqrt{2}} : }} | statistics = Bosonic | group = Mesons | interaction = Strong, weak, electromagnetic, and gravity | antiparticle=
| theorized = Hideki Yukawa (1935) | discovered =
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).