Chinese Physics C > 1993, Vol. 17 > Issue(10): 892-897

Moment Analysis and ξ(2220)

YU Hong^,,
SHEN Qi-Xing

Institute of High Energy Physics,Academia Sinica,Beijing 100039

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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 H _J(jm,θ).It is more sensitive than the usual projective pseudoscalar meson angular distribution W _J(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 x _Jand y _Jdirectly.

References

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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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沈阳化工大学材料科学与工程学院沈阳 110142

Moment Analysis and ξ(2220)

YU Hong^,
SHEN Qi-Xing

Corresponding author:YU Hong,

Institute of High Energy Physics,Academia Sinica,Beijing 100039

Received Date:1900-01-01
Accepted Date:1900-01-01
Available Online:1993-10-05

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 H_J(jm,θ).It is more sensitive than the usual projective pseudoscalar meson angular distribution W_J(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 x_Jand y_Jdirectly.