Study on the Baryon State X Produced in the Process J/ψ→p+X,X→Δ+π

  • The existence of the new class of hadronic states, glueball, hybrid mesons and hybrid baryons, is one of the important prediction of the QCD. It is an excited and attractive research preject to search for and identify these non-qq meson and non-qqq baryon states. The theoretical expectations on the mass spectrum of hybrid baryons have been carried out in the bag model, QCD sum rules and flux tube model. We might expect that J/ψ hadronic decay processes are the good place to study hybrid baryons. The J/ψ decay process J/ψ→p+X,X→Δ+π, where p and Δ are the antiproton and Δ baryon with spin parity (3/2)+, respectively, are studied in terms of the angular distribution and the generalized moment analysis methods. Precise angular distribution and moment representation of baryon resonance (including the hybrid baryon) X with spin parity (1/2)±,(3/2)±,and (5/2)± are obtained. They can be used to identify the spin of the baryon resonance state X.
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SHEN Qi-Xing and YU Hong. Study on the Baryon State X Produced in the Process J/ψ→p+X,X→Δ+π[J]. Chinese Physics C, 2003, 27(4): 288-292.
SHEN Qi-Xing and YU Hong. Study on the Baryon State X Produced in the Process J/ψ→p+X,X→Δ+π[J]. Chinese Physics C, 2003, 27(4): 288-292. shu
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Received: 2002-07-03
Revised: 1900-01-01
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Study on the Baryon State X Produced in the Process J/ψ→p+X,X→Δ+π

    Corresponding author: SHEN Qi-Xing,
  • Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039, China

Abstract: The existence of the new class of hadronic states, glueball, hybrid mesons and hybrid baryons, is one of the important prediction of the QCD. It is an excited and attractive research preject to search for and identify these non-qq meson and non-qqq baryon states. The theoretical expectations on the mass spectrum of hybrid baryons have been carried out in the bag model, QCD sum rules and flux tube model. We might expect that J/ψ hadronic decay processes are the good place to study hybrid baryons. The J/ψ decay process J/ψ→p+X,X→Δ+π, where p and Δ are the antiproton and Δ baryon with spin parity (3/2)+, respectively, are studied in terms of the angular distribution and the generalized moment analysis methods. Precise angular distribution and moment representation of baryon resonance (including the hybrid baryon) X with spin parity (1/2)±,(3/2)±,and (5/2)± are obtained. They can be used to identify the spin of the baryon resonance state X.

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