Moment Analysis and ξ(2220)

YU Hong; SHEN Qi-Xing

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_J and y_J directly.

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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