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

High Energy Physics - Phenomenology 2008-11-26 v3 High Energy Physics - Experiment
Authors: Feng-Kun Guo , Peng-Nian Shen , Huan-Qing Jiang
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Abstract

The ψ′→J/ψπ+π−\psi'\to J/\psi\pi^+\pi^- decay process provides a new way to extract the ππ\pi\pi SS wave phase shifts up to 0.59GeV0.59GeV. In this paper we derive the formulae for extracting the ππ\pi\pi SS wave phase shifts from the invariant mass spectrum of ππ\pi\pi in the ψ′→J/ψπ+π−\psi'\to J/\psi\pi^+\pi^- decay.

Keywords

$\pi\pi$ phase shifts $\psi'\to J/\psi\pi^+\pi^-$ decay invariant mass spectrum S-wave phase shifts resonance region

Cite

@article{arxiv.hep-ph/0601082,
  title  = {The pi pi Phase Shifts from psi' to J/psi pi^+ pi^- Decays},
  author = {Feng-Kun Guo and Peng-Nian Shen and Huan-Qing Jiang},
  journal= {arXiv preprint arXiv:hep-ph/0601082},
  year   = {2008}
}

Comments

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

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