Pion
πCommonReal particle, observed in experiments
Fact from the codex
The lightest hadron, a quark–antiquark pair. Mediates the force between protons and neutrons in the nucleus.
Data
- Appears from ring
- Ring 1 · LHC ring
- Rarity
- Common
- Mass
- 139.6 MeV
- Threshold
- 139.6 MeV
- Base rate
- 35 %
- Boosted by
- Tracker
- Resonance
- Tunable as a resonance from ring 7
- Source
- PDG 2026, Review of Particle Physics, Summary Tables (pdg.lbl.gov/2026)
27 km circumference
per collision, before threshold factor and detector boost
×1.12 frequency per level (+12 %)
