The Structures of Colour String for e<SUP>+</SUP>e<SUP>－</SUP>→qqg and γ→3g

TIAN Li-Li; XIE Qu-Bing; SI Zong-Guo

Chinese Physics C> 1993, Vol. 17> Issue(8) : 717-724

The Structures of Colour String for e⁺e^－→qqg and γ→3g

Jinan University,250002Department of Physics,Shandong University,Jinan 250100

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Abstract：
In Lund model,the explanation of e⁺e^－→qqg→3 jets and γ→3g→h's is based on applying Lund string fragmentation model to their assumed structures of colour string for qqg and 3g systems.In this paper,starting from the colour wave functions of qqg and 3g systems,we study these colour string structures by QCD directly.The results reveal the reasonableness and accuracy of Lund string pictures.

References

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P.Field and P. P. Feynman, Nucl. Phys，B136(1978),1;P.Hoyer et al.，Nucl. Phys.，B161(1979),349;A.Ali et al.，Phys. Lett.，B93(1980),155.[2]B. Andersson et al.，Phys. Rep. 97(1983),31.[3]J. B. Gaffney and A. H. Mueller, Nucl. Phys.，B250(1985),109.[4]OPAL Collab.，M. K. Akrawy et al.，Phys. Lett.，B261 (1991) , 334 ,and the references therein;JADE Collab.，W. Bart et al. , Phys. Lett.，B134(1984),215.[5]B. Andersson et al.，Phys. Scripta 32(1985),574.[6]D. Wegener, in proceedings of XXI International Symposium on Multiparticle DYNAMICS, eds. Wu Yuanfang et al.，(World Scientific, Singapore 1992), p. 107, and the references therein.[7]Ya. I. Azimov et al.，Phys. Lett.，B165(1985).147.[8]For a rewiew see D. Flamm and F. Schoberl "Introduction to the quark model of elementary particles", Gordon and Breach Science Publishers, 1982, Sec. 3. 2.[9]B. Andersson et al.，Z. Phys，C44(1989),461.

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TIAN Li-Li, XIE Qu-Bing and SI Zong-Guo. The Structures of Colour String for e⁺e^－→qqg and γ→3g[J]. Chinese Physics C, 1993, 17(8): 717-724.

TIAN Li-Li, XIE Qu-Bing and SI Zong-Guo. The Structures of Colour String for e⁺e^－→qqg and γ→3g[J]. Chinese Physics C, 1993, 17(8): 717-724. 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 Structures of Colour String for e⁺e^－→qqg and γ→3g

Corresponding author: TIAN Li-Li,

Jinan University,250002Department of Physics,Shandong University,Jinan 250100

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1993-08-05

Abstract: In Lund model,the explanation of e⁺e^－→qqg→3 jets and γ→3g→h's is based on applying Lund string fragmentation model to their assumed structures of colour string for qqg and 3g systems.In this paper,starting from the colour wave functions of qqg and 3g systems,we study these colour string structures by QCD directly.The results reveal the reasonableness and accuracy of Lund string pictures.