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PING Rong-gang. Study on Roper Structure as Hybrid from J/Ψ Decays[J]. Nuclear Physics Review, 2004, 21(2): 165-169. DOI: 10.11804/NuclPhysRev.21.02.165
Citation: PING Rong-gang. Study on Roper Structure as Hybrid from J/Ψ Decays[J]. Nuclear Physics Review, 2004, 21(2): 165-169. DOI: 10.11804/NuclPhysRev.21.02.165

Study on Roper Structure as Hybrid from J/Ψ Decays

  • The structure of Roper resonance is studied as hybrid states through decays J/Ψ→p*, N** by calculating the angular distributions and decay widths. The results show that the angular distribution parameters for decays J/Ψ→p*, N** are almost equal if the Roper is identified as a pure hybrid state, while their decay width are less the 1% of that for the decay J/Ψ→p, and the variance of the ratio Γ(J/Ψ→N*p)/Γ(J/Ψ→p) and Γ(J/Ψ→N**)/ Γ(J/Ψ→p) with the mixing parameter are presented,and also the scheme to identify the Roper structure in J/Ψ decays is discussed.
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