The pi pi Phase Shifts from psi' to J/psi pi^+ pi^- Decays

Details The pi pi Phase Shifts from psi' to J/psi pi^+ pi^- Decays The pi pi Phase Shifts from psi' to J/psi pi^+ pi^- Decays

2006-01-11

arxiv.org/abs/hep-ph/0601082v3

HighEnergyPhys.Nucl.Phys.29:892,2005

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 1 figure. A misprint in Eq.(13) corrected

Scientific paper

The $\psi'\to J/\psi\pi^+\pi^-$ decay process provides a new way to extract
the $\pi\pi$ $S$ wave phase shifts up to $0.59GeV$. In this paper we derive the
formulae for extracting the $\pi\pi$ $S$ wave phase shifts from the invariant
mass spectrum of $\pi\pi$ in the $\psi'\to J/\psi\pi^+\pi^-$ decay.

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