ar X iv : h ep - p h / 01 11 30 8 v 2 1 8 A pr 2 00 2 Chiral loops and VMD in the V → PPγ decays
نویسنده
چکیده
We evaluate radiative decays of ρ and ω going to two neutral mesons, ππ and πη. We use the sequential vector decay mechanisms in addition to chiral loops and ρ-ω mixing. The chiral loops are obtained using elements of UχPT successfully applied in the study of meson-meson interactions up to 1.2 GeV. The chiral loops are found very important in the case of the ρ → ππγ decay and small in the other cases. A good agreement with present measurements of ρ → ππγ and ω → ππγ is obtained and predictions are made for the other decays where the rates obtained are rather small.
منابع مشابه
ar X iv : h ep - p h / 01 11 30 8 v 1 2 3 N ov 2 00 1 Chiral loops and VMD in the V → PPγ decays
We evaluate radiative decays of ρ and ω going to two neutral mesons, ππ and πη. We use the sequential vector decay mechanisms in addition to chiral loops and ρ-ω mixing. The chiral loops are obtained using elements of UχPT successfully applied in the study of meson-meson interactions up to 1.2 GeV. The chiral loops are found very important in the case of the ρ → ππγ decay and small in the other...
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