The ππ Phase Shifts form ψ′→J/ψπ+π- Decays

  • The ψ'→J/ψ π+π- decay process provides a new way to extract the ππ S wave phase shifts up to 0.59GeV. In this paper we derive the formulae for extracting the ππS wave phase shifts from the invariant mass spectrum of ππ in the ψ'→J/ψ π+π- decay.
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GUO Feng-Kun, SHEN Peng-Nian and JIAN Huan-Qing. The ππ Phase Shifts form ψ′→J/ψπ+π- Decays[J]. Chinese Physics C, 2005, 29(9): 852-855.
GUO Feng-Kun, SHEN Peng-Nian and JIAN Huan-Qing. The ππ Phase Shifts form ψ′→J/ψπ+π- Decays[J]. Chinese Physics C, 2005, 29(9): 852-855. shu
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Received: 2005-05-24
Revised: 1900-01-01
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The ππ Phase Shifts form ψ′→J/ψπ+π- Decays

    Corresponding author: GUO Feng-Kun,
  • Institute of High Energy Physics, Chinese Academy of Sciences,Beijing 100049, China2 CCASTWorld Lab., Beijing 100080, China3 Southwest Normal University, Chongqing 400715, China4 Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080, China5 Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator of Lanzhou,Lanzhou 730000, China6 Graduate School of Chinese Academy of Sciences, Beijing 100049, China

Abstract: The ψ'→J/ψ π+π- decay process provides a new way to extract the ππ S wave phase shifts up to 0.59GeV. In this paper we derive the formulae for extracting the ππS wave phase shifts from the invariant mass spectrum of ππ in the ψ'→J/ψ π+π- decay.

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