New study of the isotensor pi-pi interaction
High Energy Physics - Phenomenology
2008-11-26 v1
Abstract
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. The t-channel rho exchange provides repulsive negative phase shifts while the t-channel f2(1270) gives an attractive force to increase the phase shifts for pi pi scattering above 1 GeV, and the coupled-channel box diagram causes the inelasticities. The implication to the isoscalar pi pi S-wave interaction is discussed.
Cite
@article{arxiv.hep-ph/0308152,
title = {New study of the isotensor pi-pi interaction},
author = {F. Q. Wu and B. S. Zou and L. Li and D. V. Bugg},
journal= {arXiv preprint arXiv:hep-ph/0308152},
year = {2008}
}
Comments
17 pages, 5 figures