Studying e<SUP>+</SUP>e<SUP>－</SUP>→h′s Process by Event Generator of Quark Combination Model

Si Zongguo; Xie Qubing

Chinese Physics C> 1999, Vol. 23> Issue(5) : 445-458

Studying e⁺e^－→h′s Process by Event Generator of Quark Combination Model

Si Zongguo ^, ,
Xie Qubing

Department of Physics, Shandong University, Jinan Shandong 2501002 Institute of Particle Physics, Huazhong Normal University, mahan Hubei 430070

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Abstract：
The event generator of quark combination model is obtained by replacing LUND string fragmentation model in JETSET7.3. Then this generator is applied to study the e⁺e^－→h′s process. Using much less adjustable parameters than other models. It is found that quark combination model can reproduce a lot of data, such as the average hadron mulhplicities, the difference &_bl betWeen b-quark and light-quark events, the baryon to meson ratios, the event shape distributions and the baryon antibaryon correlations, etc. The reason for some of its predictions deviated from data is discussed. Moreover, it is found that quark combination model can give more direct understanding for some phenomena, eg., the baryon to meson ratios and the baryon antibaryon correlations, etc.

References

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Si Zongguo and Xie Qubing. Studying e⁺e^－→h′s Process by Event Generator of Quark Combination Model[J]. Chinese Physics C, 1999, 23(5): 445-458.

Si Zongguo and Xie Qubing. Studying e⁺e^－→h′s Process by Event Generator of Quark Combination Model[J]. Chinese Physics C, 1999, 23(5): 445-458. shu

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Received: 1998-06-08
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

Studying e⁺e^－→h′s Process by Event Generator of Quark Combination Model

Corresponding author: Si Zongguo,

Department of Physics, Shandong University, Jinan Shandong 2501002 Institute of Particle Physics, Huazhong Normal University, mahan Hubei 430070

Received Date: 1998-06-08

Accepted Date: 1900-01-01

Available Online: 1999-05-05

Abstract: The event generator of quark combination model is obtained by replacing LUND string fragmentation model in JETSET7.3. Then this generator is applied to study the e⁺e^－→h′s process. Using much less adjustable parameters than other models. It is found that quark combination model can reproduce a lot of data, such as the average hadron mulhplicities, the difference &_bl betWeen b-quark and light-quark events, the baryon to meson ratios, the event shape distributions and the baryon antibaryon correlations, etc. The reason for some of its predictions deviated from data is discussed. Moreover, it is found that quark combination model can give more direct understanding for some phenomena, eg., the baryon to meson ratios and the baryon antibaryon correlations, etc.

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Studying e⁺e^－→h′s Process by Event Generator of Quark Combination Model