Meaning of familon | Babel Free

Definitions

A hypothetical Nambu–Goldstone boson arising from the spontaneous breaking of a global family symmetry that distinguishes between generations of quarks and leptons.

particle

Examples

“It could be the axion associated with the Peccei-Quinn symmetry for strong CP invariance, or it could be the "familon'", a Goldstone boson that is associated with family symmetries and was discussed by Wilczek at the TSIMESS Workshop at Santa Cruz.”

“For massive neutrinos that can decay by emission of a familon (f), a flavor-changing axion, the upper bound on the cosmic energy density of the decay products yields (1) an upper bound on the familon decay constant, and consequently (2) a lower bound on other f emission rates.”

“Below the EWSB scale, the leading coupling of the familon to fermions becomes marginal after replacing the Higgs in (4.13) with its vacuum expectation value.”

CEFR level