Neutral particle

In physics, a neutral particle is a particle with no electric charge.

Stable or long-lived neutral particles

Long-lived neutral particles do not decay for a very long time. Examples of such particles include photons,^{[PDG 1]} neutrons,^{[PDG 2]} and neutrinos.^{[PDG 3]}

Other neutral particles

Other neutral particles are very short-lived. They decay before they can be detected by a particle detector. They have been observed only indirectly, such as tracks of ionized particles in a particle accelerator. They include:

• Z bosons^{[PDG 4]}
• Dozens of heavy neutral hadrons:
  • Neutral mesons such as the pion^{[PDG 5]} and kaon^{[PDG 6]}
  • The neutral Delta baryon,^{[PDG 7]} and other neutral baryons, such as the xi baryon^{[PDG 8]} and lambda baryon^{[PDG 9]}

References

• K. Nakamura et al. (Particle Data Group), JP G 37, 075021 (2010) and 2011 partial update for the 2012 edition

1. Particle listings - gamma
2. Particle listings – Error no symbol defined
3. Particle listings - Neutrino Properties
4. Particle listings - Z boson
5. Particle listings - Pi0
6. Particle listings - K0
7. Particle listings – Error no symbol defined(1232)
8. Particle listings - Xi0
9. Particle listings - Lambda