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

GUO Feng-Kun; SHEN Peng-Nian; JIAN Huan-Qing

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《中国物理C》（英文）编辑部

2024年10月30日

Chinese Physics C> 2005, Vol. 29> Issue(9) : 852-855

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

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

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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.

References

[1]

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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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1.
沈阳化工大学材料科学与工程学院沈阳 110142

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

Received Date: 2005-05-24
Accepted Date: 1900-01-01
Available Online: 2005-09-05

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.