Angular Distributions for the Process e+e→J/ψ→γ+X(JPC),X→BB and Spin-Parity Analysis of the Resonance X

  • Using the helicity angular distribution method we analyse the process e+e→J/ψ→γ+X(JPC),X→BB. The angular and the projection angular distribution formulas for different spin-parity of the resonance X are obtained. With these formulas, we determine the spin of the resonance X through analysing experimental data.
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  • [1] P.G.O.Freund,F.Walthz,J.Rosner,Nucl Phys,B13(1969)237.[2] P.Henrard,P CC F,R I87-03(1987)[3] JS.Brown,P HD Thesis,U MI84-19117-mc(unpublished)[4]金山,在J/ψ衰变中研究ξ(2230)粒子,中科院高能物理所博士论文。[5]郁宏,高能物理与核物理,13(1989)87;郁宏、沈齐兴,高能物理与核物理,17(1993)892.[6] A.Etkin et al.,Phys Rev.,Lett,49(1982)1620.[7]沈齐兴、郁宏,高能物理与核物理,14(1990)504.
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Zhang Lin, Yu Hong and Shen Qixing. Angular Distributions for the Process e+e→J/ψ→γ+X(JPC),X→BB and Spin-Parity Analysis of the Resonance X[J]. Chinese Physics C, 1996, 20(3): 280-285.
Zhang Lin, Yu Hong and Shen Qixing. Angular Distributions for the Process e+e→J/ψ→γ+X(JPC),X→BB and Spin-Parity Analysis of the Resonance X[J]. Chinese Physics C, 1996, 20(3): 280-285. shu
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Received: 1900-01-01
Revised: 1900-01-01
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Angular Distributions for the Process e+e→J/ψ→γ+X(JPC),X→BB and Spin-Parity Analysis of the Resonance X

    Corresponding author: Zhang Lin,
  • Institute of High Energy Physics, The chinese Academy of Sciences,Beijing 100039

Abstract: Using the helicity angular distribution method we analyse the process e+e→J/ψ→γ+X(JPC),X→BB. The angular and the projection angular distribution formulas for different spin-parity of the resonance X are obtained. With these formulas, we determine the spin of the resonance X through analysing experimental data.

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