Definitions:

1. A K-meson, also known as a kaon, is a type of subatomic particle that plays a significant role in the study of particle physics, particularly in the context of quantum chromodynamics (QCD), the theory describing the strong interaction. NOUN
   • The interaction and decays of neutral K-mesons are characterized by quantum-mechanical effects.
2. K-mesons are made up of one strange quark (or antiquark) and one up or down quark (or their antiquarks), depending on the type of kaon. NOUN
   • The k mesons or Kaons come in two varieties: positively charged(K+) and neutral (K0).

Synonyms:

• k-particle
• kaon
• kappa-meson
• mesotron
• neutral kaons
• strange mesons