Angular Distribution of the Process e+e-→J/ψγ+X(JPc),X→BB,and the Spin-Parity Analysis of the Resonance X

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Zhang Lin, Yu Hong and Shen Qixing. Angular Distribution of the Process e+e-→J/ψγ+X(JPc),X→BB,and the Spin-Parity Analysis of the Resonance X[J]. Chinese Physics C, 1996, 20(S2): 135-140.
Zhang Lin, Yu Hong and Shen Qixing. Angular Distribution of the Process e+e-→J/ψγ+X(JPc),X→BB,and the Spin-Parity Analysis of the Resonance X[J]. Chinese Physics C, 1996, 20(S2): 135-140. shu
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Received: 1995-03-10
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    Supported by the National Natural Science Foundation of China.

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Angular Distribution of the Process e+e-→J/ψγ+X(JPc),X→BB,and the Spin-Parity Analysis of the Resonance X

  • Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China
Fund Project:  Supported by the National Natural Science Foundation of China.

Abstract: The process e+e-→J/ψγ+X(JPc),X→BB (baryon and anti-baryon) is analyzed by using the helicity angular distribution method. The angular and the projection angular distribution formulas for different spin-parity of the resonance X are obtained. With these formulas, we can determine the spin of the resonance X through the analysis of the experimental data.

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