arXiv:hep-ph/0405118·v1·High Energy Physics — Phenomenology
Understanding I=2 pi-pi Interaction
B.S.Zou🇨🇳 · F.Q.Wu🇨🇳 · L.Li (Institute of High Energy Physics, Beijing)🇨🇳 · D.V.Bugg (QMC, London)🇬🇧
Abstract
A correct understanding and description of the I=2 pi-pi S-wave interaction is important for the extraction of the I=0 pi-pi S-wave interaction from experimental data and for understanding the I=0 pi-pi S-wave interaction theoretically. With t-channel rho, f2(1270) exchange and the pi pi -> rho rho -> pi pi box diagram contribution, we reproduce the pi-pi isotensor S-wave and D-wave scattering phase shifts and inelasticities up to 2.2 GeV quite well in a K-matrix formalism.
Comments: Talk given at Hadron 03: 10th International Conference on Hadron Spectroscopy, Aschaffenburg, Germany, 31 Aug - 6 Sep 2003