Moment Analysis and ξ (2220)

Yu Hong; Shen Qixing

Chinese Physics C> 1993, Vol. 17> Issue(S3) : 249-254

Moment Analysis and ξ (2220)

Yu Hong ,
Shen Qixing

Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China

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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 moment H_J(jm, θ). It is more sensitive than the usual projective pseudoscalar meson angular distribution W_J(θ) in determining whether the spin of the ξ(2220) is 2 or 4. We also give some moments required by the moment analysis and helicity amplitude ratios X_J and y_J represented directly by some relations of moments.
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Yu Hong and Shen Qixing. Moment Analysis and ξ (2220)[J]. Chinese Physics C, 1993, 17(S3): 249-254.

Yu Hong and Shen Qixing. Moment Analysis and ξ (2220)[J]. Chinese Physics C, 1993, 17(S3): 249-254. shu

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Received: 1992-10-19

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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 Qixing

Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China

Received Date: 1992-10-19

Abstract: In order to reduce the influence of the geometrical acceptance and improve the precision we introduce the pseudoscalar meson angular distribution of moment H_J(jm, θ). It is more sensitive than the usual projective pseudoscalar meson angular distribution W_J(θ) in determining whether the spin of the ξ(2220) is 2 or 4. We also give some moments required by the moment analysis and helicity amplitude ratios X_J and y_J represented directly by some relations of moments.