Does nature like Nambu-Goldstone bosons?

G. B. Gelmini, S. Nussinov, T. Yanagida

Research output: Contribution to journalArticlepeer-review


We argue here that many (up to around 30 species) so far undetected Goldstone bosons could exist in nature, for example, associated with the spontaneous breaking of a horizontal global symmetry, provided the breaking scale is V ≳ 1010 GeV. Since Goldstone bosons do not generate r-1 but spin-dependent r-3 non-relativistic long-range potentials, the apparently most dramatic effect of massless bosons (new long-range forces competing with gravitation and electromagnetism) is easily avoidable (the Glasgow-Weinberg-Salam breaking scale is enough); μ→eG and K→πG provide the most restrictive bounds and probably the only possibility to look for Goldstone bosons in the laboratory.

Original languageEnglish
Pages (from-to)31-40
Number of pages10
JournalNuclear Physics, Section B
Issue number1
StatePublished - 13 Jun 1983


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