TY - JOUR
T1 - Chiral perturbation theory versus vector meson dominance in the decays φ → ργγ and φ → ωγγ
AU - Ko, Pyungwon
AU - Lee, Jungil
AU - Song, H. S.
N1 - Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 1996/1/11
Y1 - 1996/1/11
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0001500535&partnerID=8YFLogxK
U2 - 10.1016/0370-2693(95)01371-7
DO - 10.1016/0370-2693(95)01371-7
M3 - Article
AN - SCOPUS:0001500535
SN - 0370-2693
VL - 366
SP - 287
EP - 292
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 1-4
ER -