New study of the isotensor ππ interaction

被引:31
作者
Wu, FQ
Zou, BS
Li, L
Bugg, DV
机构
[1] CCAST World Lab, Beijing 100080, Peoples R China
[2] Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China
[3] Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
[4] Peking Univ, Beijing 100087, Peoples R China
[5] Queen Mary Univ London, London E1 4NS, England
基金
中国国家自然科学基金;
关键词
D O I
10.1016/j.nuclphysa.2004.01.126
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
With t-channel rho, f(2)(1270) exchange and the pipi --> rhorho --> pipi box diagram contribution, we reproduce the pipi isotensor S-wave and D-wave scattering phase shifts and inelasticities up to 2.2 GeV quite well in a K-matrix formalism. The t-channel rho exchange provides repulsive negative phase shifts while the t-channel f(2)(1270) gives an attractive force to increase the phase shifts for pipi scattering above 1 GeV, and the coupled-channel box diagram causes the inelasticities. The implication to the isoscalar pipi S-wave interaction is discussed. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:111 / 124
页数:14
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