ParticleData is based on a wide range of sources, with enhancement at the Wolfram Research Companies by both human and algorithmic processing.

Among principal sources for ParticleData are:

Durham (UK) HEP Database Group. "HEPDATA: The Durham HEP Databases." 2009. »

Grigoriev, I. S. Handbook of Physical Quantities. 1997.

Yao, W-M, et al. and Particle Data Group. "Review of Particle Physics." Journal of Physics G: Nuclear and Particle Physics 33, no. 1, (2006): 1–1232. »

To report an error or suggest an addition to ParticleData, contact the Wolfram Research ParticleData team.