Moment Analysis and ξ(2220)

  • In order to reduce the influence of the geometrical acceptance and improve the precision we introduce the pseudoscalar meson angular distribution of the moment HJ(jm,θ).It is more sensitive than the usual projective pseudoscalar meson angular distribution WJ(θ) for determining that the spin of the ξ(2220) is 2 or 4.We also give some moments which are needed for the moment analysis and some relations of moments to represent the helicity amplitude ratios xJ and yJ directly.
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Get Citation
YU Hong and SHEN Qi-Xing. Moment Analysis and ξ(2220)[J]. Chinese Physics C, 1993, 17(10): 892-897.
YU Hong and SHEN Qi-Xing. Moment Analysis and ξ(2220)[J]. Chinese Physics C, 1993, 17(10): 892-897. shu
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Received: 1900-01-01
Revised: 1900-01-01
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Moment Analysis and ξ(2220)

    Corresponding author: YU Hong,
  • Institute of High Energy Physics,Academia Sinica,Beijing 100039

Abstract: In order to reduce the influence of the geometrical acceptance and improve the precision we introduce the pseudoscalar meson angular distribution of the moment HJ(jm,θ).It is more sensitive than the usual projective pseudoscalar meson angular distribution WJ(θ) for determining that the spin of the ξ(2220) is 2 or 4.We also give some moments which are needed for the moment analysis and some relations of moments to represent the helicity amplitude ratios xJ and yJ directly.

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