Another look at ππ scattering in the scalar channel -: art. no. 034005

被引：66

作者：

Igi, K ^{[1
]}

Hikasa, K

机构：

[1] Kanagawa Univ, Dept Informat Sci, Kanagawa 2591293, Japan

[2] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan

来源：

PHYSICAL REVIEW D | 1999年 / 59卷 / 03期

关键词：

D O I：

10.1103/PhysRevD.59.034005

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We set up a general framework to describe pi pi scattering below 1 GeV based on chiral low-energy expansion with possible spin-0 and -1 resonances. Partial wave amplitudes are obtained with the N/D method, which satisfy unitarity, analyticity, and approximate crossing symmetry. A comparison with the phase shift data in the J = 0 channel favors a scalar resonance near the rho mass. [80556-2821(99)00901-7].

引用

页数：9

共 45 条

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