The phase of the sigma -> pi-pi amplitude in J/Psi -> omega-pi-pi

Details The phase of the sigma -> pi-pi amplitude in J/Psi -> omega-pi-pi The phase of the sigma -> pi-pi amplitude in J/Psi -> omega-pi-pi

2004-11-11

arxiv.org/abs/hep-ex/0411042v1

Physics

High Energy Physics

High Energy Physics - Experiment

10 pages, 4 figures, Euro. Phys. J C (in press)

Scientific paper

10.1140/epjc/s2004-02031-0

The phase variation of the sigma -> pi-pi amplitude is accurately determined
as a function of mass from BES II data for J/Psi -> omega-pi-pi. The
determination arises from interference with the strong b1(1235)-pi amplitude.
The observed phase variation agrees within errors with that in pi-pi elastic
scattering.

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