Goldstone bosons generate peculiar conformal anomalies

H. Leutwyler, M. Shifman

Research output: Contribution to journalArticlepeer-review

40 Scopus citations


We reexamine the low energy theorem for the matrix element 〈0|θμμ|γγ〉, where θμν is the energy-momentum tensor. Virtual pions are shown to generate anomalous contributions. The consequences for the decay of a light Higgs particle into two photons are discussed.

Original languageEnglish (US)
Pages (from-to)384-388
Number of pages5
JournalPhysics Letters B
Issue number3-4
StatePublished - May 4 1989

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