LOW-ENERGY PION-PION SCATTERING IN UNITARIZED STRIP APPROXIMATION

被引：11

作者：

JOHNSON, RC

COLLINS, PDB

机构：

[1] Department of Physics, University of Toronto, Toronto

[2] Department of Physics, Durham University, Durham City

[3] Mathematics Department, Durham University

来源：

PHYSICAL REVIEW | 1969年 / 185卷 / 05期

关键词：

D O I：

10.1103/PhysRev.185.2020

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present an improved set of parameters for a successful bootstrap of the ρ and Pomeranchon Regge trajectories in pion-pion scattering. The resulting π-π amplitudes are compared with the experimental data, with particular reference to the low-energy S-wave phase shifts, which agree fairly well with present indications. We obtain for the trajectory intercepts αP(0)=1.0 and αρ(0)=0.55; for the ρ-meson width Γρ=143 MeV; and for the S-wave scattering lengths a0=(0.15±0.05)mπ-1, a2=(-0.04±0.015)mπ-1. © 1969 The American Physical Society.

引用

页码：2020 / +

页数：1

共 68 条

[1] SUM RULES FOR AXIAL-VECTOR COUPLING-CONSTANT RENORMALIZATION IN BETA DECAY [J].