Some articles on mass, mass difference:
... lightest strongly interacting particle with a mass of roughly 770 MeV for all three states ... There should be a small mass difference between the ρ+ and the ρ0 that can be attributed to the electromagnetic self-energy of the particle as well as a small effect due to isospin breaking arising from ... vector meson) and a much higher value of the mass ...
Famous quotes containing the words difference and/or mass:
“The difference between a lady and a flower girl is not how she behaves, but how shes treated.”
—George Bernard Shaw (18561950)
“The most dangerous aspect of present-day life is the dissolution of the feeling of individual responsibility. Mass solitude has done away with any difference between the internal and the external, between the intellectual and the physical.”
—Eugenio Montale (18961981)