What is the meaning of the word "b-meson"?

Definitions:

  1. A type of subatomic particle in the meson family which consists of a quark and an antiquark. copy to clipboard NOUN
    • The discovery of B-meson oscillations provided crucial evidence for the existence of the third generation of quarks. copy to clipboard
  2. Any of a class of short-lived mesons that are thought to be a combination of one bottom antiquark and either an up, down, or strange quark. copy to clipboard noun
    • The physicists saw evidence of a bmeson. copy to clipboard

Synonyms: