The evaluation of the branching ratios of the decays φ(1020)→2π+2π-π0, π+π-3π0

被引：2
|
作者：
Achasov, NN [1 ]
Kozhevnikov, AA [1 ]
机构：
[1] Sobolev Inst Math, Theoret Phys Lab, Novosibirsk 630090, Russia
来源：
JETP LETTERS | 2004年 / 79卷 / 01期
关键词：
D O I：
10.1134/1.1675912
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Combining the Okubo-Zweig-Iizuka rule in the decay phi --> rhopi --> pi(+)pi(-)pi(0) with the rho --> 4pi decay amplitudes, we calculate the phi --> 2 pi(+)2pi(-)pi(0) and phi --> pi(+)pi(-)3pi(0) ones. The partial widths of the above phi decays are evaluated, and the excitation curves in e(+)e(-) annihilation are obtained, assuming reasonable particular relations among the parameters characterizing the anomalous terms of the HLS Lagrangian. The evaluated branching ratios B(phi --> pi)(+)pi(-)3pi(0) approximate to 2 x 10(-7) and B(phi --> 2 pi)(+)2pi(-)pi(0) approximate to 7 x 10(-7) are such that, with the luminosity L = 500 pb(-1) attained at DAPhiNE phi factory, one may already possess about 1685 events of the decays phi --> 5pi. (C) 2004 MAIK "Nauka / Interperiodica".
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页码：13 / 15
页数：3
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