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

Moment Analysis and ξ (2220)

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

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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 _Jand y _Jrepresented 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 momentH_J(jm, θ). It is more sensitive than the usual projective pseudoscalar meson angular distributionW_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 ratiosX_Jandy_Jrepresented directly by some relations of moments.