Moment Analysis of J/ψ Decay Processes and Comparison of Results in Two Frames

Shen Qixing; Chao Ming; Yu Hong

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《中国物理C》（英文）编辑部

2024年10月30日

Chinese Physics C> 1997, Vol. 21> Issue(5) : 408-412

Moment Analysis of J/ψ Decay Processes and Comparison of Results in Two Frames

Institute of High Energy Physics,The Chinese Academy of Sciences, Beijing 100039

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Abstract：
The density matrices of J/ψ produced in the non-polarized e⁺－e^－ collisions in both experimental laboratory and helicity frame are discussed. The results show that rthe conclkusion for only J/ψ with the helicity ±1 having contributions to the procss is correct only in the experimental laboratory frame under some conditions. The number of the moments is the same and there is a simple relation between the moments in the two frames.

References

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D.L.Scharre et al.,Phys.Lett.,97B（1980）329.[2]C.Edwards et al.,Phys.Rev Lett.,48（1982）458.[3]R.M.Baltrusaitis et al.,Phys.Rev.Lett.,56（1986）107:J.Z.Bai et al.,Phys.Rev Lett,76（1996）3502.[4]D.Coffman et al.,Phys.Rev.,D38（1988）2695.[5]J.Jousset et al.,Phys.Rev,D41（1990）1389.[6]Yu Hong et al.,BIHEP-TH-92-48（1992）;J.Z.Bai et al.,Phys.Rev.Lett.,77（1996）3959.[7]D.V.Bugg et al.,Phys.Lett.,B353（1995）378.[8]郁宏，高能物理与核物理，13（1989）87.[9]S.U.Chung,Phys.Rev.,169（1968）1342.[10]D.H.Perkins,Introduction to High Energy Physics,1987,p.377-378.[11]Qixing Shen,Hong Yu,Jilong Zhang,Phys.Rev.,D48（1993）2129.[12]Qixing Shen,Hong Yu,Lin Zhang,Phys.Rev,D52（1995）2825.[13]沈齐兴，郁宏，高能物理与核物理，16（1992）704.[14]沈齐光，郁宏，高能物理与核物理，17（1993）503.

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Shen Qixing, Chao Ming and Yu Hong. Moment Analysis of J/ψ Decay Processes and Comparison of Results in Two Frames[J]. Chinese Physics C, 1997, 21(5): 408-412.

Shen Qixing, Chao Ming and Yu Hong. Moment Analysis of J/ψ Decay Processes and Comparison of Results in Two Frames[J]. Chinese Physics C, 1997, 21(5): 408-412. shu

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Received: 1900-01-01
Revised: 1900-01-01

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

Moment Analysis of J/ψ Decay Processes and Comparison of Results in Two Frames

Corresponding author: Shen Qixing,

Institute of High Energy Physics,The Chinese Academy of Sciences, Beijing 100039

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1997-05-05

Abstract: The density matrices of J/ψ produced in the non-polarized e⁺－e^－ collisions in both experimental laboratory and helicity frame are discussed. The results show that rthe conclkusion for only J/ψ with the helicity ±1 having contributions to the procss is correct only in the experimental laboratory frame under some conditions. The number of the moments is the same and there is a simple relation between the moments in the two frames.