Goldstone bosons generate peculiar conformal anomalies

H. Leutwyler; M. Shifman

doi:10.1016/0370-2693(89)91730-9

Goldstone bosons generate peculiar conformal anomalies

H. Leutwyler, M. Shifman

Physics and Astronomy (Twin Cities)

Research output: Contribution to journal › Article › peer-review

45 Scopus citations

Abstract

We reexamine the low energy theorem for the matrix element 〈0|θ^μ_μ|γγ〉, where θ_μν 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 language	English (US)
Pages (from-to)	384-388
Number of pages	5
Journal	Physics Letters B
Volume	221
Issue number	3-4
DOIs	https://doi.org/10.1016/0370-2693(89)91730-9
State	Published - May 4 1989

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Copyright 2014 Elsevier B.V., All rights reserved.

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title = "Goldstone bosons generate peculiar conformal anomalies",

abstract = "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.",

author = "H. Leutwyler and M. Shifman",

year = "1989",

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doi = "10.1016/0370-2693(89)91730-9",

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T1 - Goldstone bosons generate peculiar conformal anomalies

AU - Leutwyler, H.

AU - Shifman, M.

PY - 1989/5/4

Y1 - 1989/5/4

N2 - 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.

AB - 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.

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DO - 10.1016/0370-2693(89)91730-9

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VL - 221

SP - 384

EP - 388

JO - Physics Letters B

JF - Physics Letters B

IS - 3-4

ER -

Goldstone bosons generate peculiar conformal anomalies

Abstract

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