Any of a group of four mesons, one positively charged and one negatively charged, having a mass 966 times that of an electron, and two electrically neutral, having a mass 974 times that of an electron. The two charged kaons have the same mean lifetime, about 1.24 × 10−10 second; the two neutral kaons have lifetimes of about 9 × 10−11 second and 5 × 10−8 second.
(particle physics) Any of four short-lived mesons that are positive, negative, or neutral and have a mass of 495 MeV/c2 (about 970 times that of an electron)
Any of three unstable mesons, one having charge +1 and a mass of 966 electron masses, and two being electrically neutral, with a mass 974 electron masses. Their half-life is approximately 10−8 seconds, and they decay through the weak force. Their decay patterns suggest that CP invariance may be violated.
Other Word Forms
Origin of kaon
- ka pronunciation of the letter K –on
From American Heritage Dictionary of the English Language, 5th Edition
- From contracted pronunciation of K-meson