Mass Dependence of Hadron Production Rates in e<SUP>+</SUP>e<SUP>－</SUP> Annihilations at High Energy

WANG Hai-Long; LIU Xi-Ming; WANG Yu-Shui

Chinese Physics C> 2002, Vol. 26> Issue(5) : 471-476

Mass Dependence of Hadron Production Rates in e⁺e^－ Annihilations at High Energy

Department of Physics, Shandong University, Ji′nan 250100, China

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Abstract：
In this paper, the parameter b in the universal mass relation =a exp(-bm) is obtained in virtue of a quark model successfully applied in the field of mass spectroscopy and is found to be a universal parameter for both baryons and mesons. Using this mass relation we give the expression for calculating the multiplicities of all the particles, and calculate the yields of various final state particles and compare it with the data from e⁺e^－ annihilation experiments and other models. The result shows this universal mass relation can explain experiment as well without any additional assumption.

References

[1]

. Chun S B ,Buchanan C D .Phys. Rep.,1998,292:239—3172. Chliapnikov P V. Phys. Lett.,1999,B462:341—3533. Webber B R .hep-ph/99123994. LIU Xi-Ming et al. HEPNP ,2002, 26(4):313(in Chinese)(刘希明等.高能物理与核物理,2002,26(4):313)5. Gasiorowicz, Am Rosner. J. Phys.,1981,49:954 6. ALEPH Collab, Barate R. Phys. Rep.,1998,294:1 7. LIU Xi-Ming et al. HEPNP, 2001, 25:377—382(in Chinese)(刘希明等.高能物理与核物理,2001, 25:377—382)8. Particle Data Group. Eur. Ohys. J.,2000,C15:226 9. Chliapnikov P V ,Uvaron V A .Phys. Lett.,1995,B345:313

References

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[3]	LIU Xi-Ming , WANG Hai-Long , ZHANG Xue-Yao , WANG Yu-Shui . Universal Mass Dependence of Directly Produced Hadron Rates. Chinese Physics C, 2002, 26(4): 313-318.
[4]	Chen Esheng , Wang Qun , Xie Qubing , Chen Yan . Multiplicity of D^*± in e⁺e^－ Annihilation at s=29─35Gev. Chinese Physics C, 1998, 22(3): 234-240.
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WANG Hai-Long, LIU Xi-Ming and WANG Yu-Shui. Mass Dependence of Hadron Production Rates in e⁺e^－ Annihilations at High Energy[J]. Chinese Physics C, 2002, 26(5): 471-476.

WANG Hai-Long, LIU Xi-Ming and WANG Yu-Shui. Mass Dependence of Hadron Production Rates in e⁺e^－ Annihilations at High Energy[J]. Chinese Physics C, 2002, 26(5): 471-476. shu

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Received: 2001-06-28
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

Mass Dependence of Hadron Production Rates in e⁺e^－ Annihilations at High Energy

Corresponding author: LIU Xi-Ming,

Department of Physics, Shandong University, Ji′nan 250100, China

Received Date: 2001-06-28
Accepted Date: 1900-01-01
Available Online: 2002-05-05

Abstract: In this paper, the parameter b in the universal mass relation =a exp(-bm) is obtained in virtue of a quark model successfully applied in the field of mass spectroscopy and is found to be a universal parameter for both baryons and mesons. Using this mass relation we give the expression for calculating the multiplicities of all the particles, and calculate the yields of various final state particles and compare it with the data from e⁺e^－ annihilation experiments and other models. The result shows this universal mass relation can explain experiment as well without any additional assumption.