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New study of the isotensor pi-pi interaction | | F.Q.Wu
; B.S.Zou
; L.Li
; D.V.Bugg
; | | Date: |
14 Aug 2003 | | Journal: | Nucl.Phys. A735 (2004) 111-124 | | Subject: | hep-ph | | Affiliation: | Ihep, Beijing), D.V.Bugg (QMC, London | | 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. | | Source: | arXiv, hep-ph/0308152 | | Services: | Forum | Review | PDF | Favorites | |
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