Chiral perturbation theory versus vector meson dominance in the decays φ → ργγ and φ → ωγγ

Pyungwon Ko, Jungil Lee, H. S. Song

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

It is pointed out that the radiative decays of a φ meson, φ rarr; ργγ and φ → ωγγ, receive dominant contributions from the pseudoscalar (P = η,η′) exchanges. Using the vector meson dominance model, we find that B(φ → ργγ) ≈ 1.3 × 10-4 and B(φ → ωγγ) ≈ 1.5 × 10-5, which are mainly from the η′ pole. Thus, these decays are well within the reach of the φ factory. Our estimates are a few orders of magnitude larger than the chiral loop contributions in the heavy vector meson chiral lagrangian, which is about (a few) × 10-9.

Original languageEnglish
Pages (from-to)287-292
Number of pages6
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume366
Issue number1-4
DOIs
Publication statusPublished - 1996 Jan 11
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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