pi pi final state interaction in K->pi pi, pp->pp pi pi, and related processes

被引：17
|
作者：
Locher, MP
Markushin, VE
Zheng, HQ
机构：
[1] Paul Scherrer Institute, Villigen PSI
来源：
PHYSICAL REVIEW D | 1997年 / 55卷 / 05期
关键词：
D O I：
10.1103/PhysRevD.55.2894
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Final state interactions in the S-wave pi pi system (I=0,2) are reexamined on the basis of the Omnes-Muskhelishvili equation and the coupled channel formalism. The contributions to the pion scalar form factor from rho and f(2)(1270) exchange in the t channel and from the f(0)(980) s-channel resonance are separately evaluated and the role of the nontrivial polynomial in the Omnes function in a coupled channel situation is elucidated. Applications are made to K --> pi pi and pp --> pp pi pi. It is found that the contribution from the f(0) resonance to the form factor is strongly reduced by a nearby zero.
引用
收藏
页码：2894 / 2901
页数：8
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