Radiative decay of ρ0 and φ mesons in a chiral unitary approach
Radiative decay of ρ0 and φ mesons in a chiral unitary approach
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手征酉方法中 ρ0 和 φ 介子的辐射衰变
DOI:
10.1016/s0370-2693(99)01205-8
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发表时间:
1999
影响因子:
4.4
通讯作者:
H. Toki
中科院分区:
文献类型:
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作者:
E. Marco;E. Marco;S. Hirenzaki;E. Oset;E. Oset;H. Toki
We study the ρ0and φ decays into π+π−γ, π0π0γ and φ into π0ηγ using a chiral unitary approach to deal with the final state interaction of the MM system. The final state interaction modifies only moderately the large momenta tail of the photon spectrum of the ρ0→π+π−γ decay. In the case of φ decay the contribution to π+π−γ and π0π0γ decay proceeds via kaonic loops and gives a distribution of ππ invariant masses in which the f0(980) resonance shows up with a very distinct peak. The spectrum found for φ→π0π0γ decay agrees with the recent experimental results obtained at Novosibirsk. The branching ratio for φ→π0ηγ, dominated by the a0(980), is also in agreement with recent Novosibirsk results.
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影响因子:
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