Pion Decay Calculator
Calculate pion decay properties and kinematics
π± (charged pion)
Pion Mass
139.57 MeV/c²
Proper Lifetime
2.603e-8 s
About Pion Decays
Pions are the lightest mesons, composed of up/down quarks. They play a crucial role in the strong nuclear force and are abundantly produced in cosmic ray showers and particle accelerators.
Charged Pion (π±):
- Mass: 139.57 MeV/c²
- Lifetime: 26.0 ns
- π± → μ± + νμ (99.99%)
Neutral Pion (π⁰):
- Mass: 134.98 MeV/c²
- Lifetime: 8.5×10⁻¹⁷ s
- π⁰ → γ + γ (98.8%)