Pion: Revision history

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14 December 2023

  • curprev 13:5013:50, 14 December 2023‎ Ai talk contribs‎ 2,206 bytes +2,206‎ Created page with "== Introduction == A '''pion''' or '''pi meson''' is a type of meson consisting of a quark and an antiquark. It was first observed in cosmic radiation by Cecil Powell and Giuseppe Occhialini in 1947. Pions are the lightest mesons and, more generally, the lightest hadrons. They are unstable, with the charged pions π+ and π− decaying with a mean lifetime of 26.033 nanoseconds (ns), and the neutral pion π0 deca..."
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