THE ANGULAR DISTRIBUTION FOR THE PROCESS e+e－→J/ψ→γB,B→P1P2 AND THE SPIN ANALYSIS OF B

YAN Wu-Guang; YU Hong

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2024年10月30日

Chinese Physics C> 1989, Vol. 13> Issue(3) : 234-240

THE ANGULAR DISTRIBUTION FOR THE PROCESS e⁺e^－→J/ψ→γB,B→P₁P₂ AND THE SPIN ANALYSIS OF B

YAN Wu-Guang ^, ,
YU Hong

Institute of High Energy Physics,Academia Sinica,Beijing

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Abstract：
This paper gives the relation between the helicity formalism(HF) and the effective interaction formalism (EIF) for the process e⁺e^－→J/ψ→γB,B→P₁P₂.The angular distributions of the pseudoscalar meson for different spin (J=2,4) of B indicate that there exist sensitive and insensitive regions to determine the spin of B.Unfortunately the data of θ/f₂(1720) and ξ(2230) just fall into the insensitive region.

References

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M. Jacob and G. C. Wick, Ann, Phys. (N. Y.) 7(1959), 404;S. U. Chung, Phyr. Rev. 169(1968), 1342;P. K. Kabir and A. J. G. Hey, Phys. Rev, D13(1976), 3161;T. L. Trueman, Phys. Rev., D18(1978), 3423;Shen Qi-xing et al., Physica Energiae Fortis Et Physica Nuclearis, 8(1984), 573.[2] Gao Chong-shou et al., Proceedings of the workshop on colliding beam physics" (1984), 243:Zhao Pei-ying et al., Acta Physics Sinica, 26(1977), 16.[3] R. Brandelik et al., Zeir. Phys., C1(1979) ,233.[4] G. Alexander et al., Phys. Lett, 72B(1978), 493 and 76B(1978), 652.[5] M. E. B. Franklin Ph. D Thesis SLAC-254 (1982).[6] C. Edwards et al., Phys. Rev. Lett, 48(1982), 458.[7] K. F. Einsweiler, Ph. D Thesis, SLAC-278 (1984);D. Hitlin, Proc. Int. Symp. Lepton and Photon Interactions, Cornell, 1983.[8] G. Elgen, CALT-68-1483.[9] S. U. Chung, Phys. Rev, 169(1968), 1342.[10] Hong Yu BIHEP-TH-88-19.郁宏，高能物理与核物理，13(1989)， 87.

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YAN Wu-Guang and YU Hong. THE ANGULAR DISTRIBUTION FOR THE PROCESS e⁺e^－→J/ψ→γB,B→P₁P₂ AND THE SPIN ANALYSIS OF B[J]. Chinese Physics C, 1989, 13(3): 234-240.

YAN Wu-Guang and YU Hong. THE ANGULAR DISTRIBUTION FOR THE PROCESS e⁺e^－→J/ψ→γB,B→P₁P₂ AND THE SPIN ANALYSIS OF B[J]. Chinese Physics C, 1989, 13(3): 234-240. 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

THE ANGULAR DISTRIBUTION FOR THE PROCESS e⁺e^－→J/ψ→γB,B→P₁P₂ AND THE SPIN ANALYSIS OF B

YAN Wu-Guang ^,
YU Hong

Corresponding author: YAN Wu-Guang,

Institute of High Energy Physics,Academia Sinica,Beijing

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1989-03-05

Abstract: This paper gives the relation between the helicity formalism(HF) and the effective interaction formalism (EIF) for the process e⁺e^－→J/ψ→γB,B→P₁P₂.The angular distributions of the pseudoscalar meson for different spin (J=2,4) of B indicate that there exist sensitive and insensitive regions to determine the spin of B.Unfortunately the data of θ/f₂(1720) and ξ(2230) just fall into the insensitive region.