Test of Flavor Independence in Strong Interaction

LIU Xi-Ming

Chinese Physics C> 2004, Vol. 28> Issue(10) : 1026-1032

Test of Flavor Independence in Strong Interaction

LIU Xi-Ming ^,

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

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Abstract：
The flavour independence of the strong coupling is a fundmental property of quantum chromodynamics(QCD). The observable which can be employed to test flavour independence is the multiplicity of charged hadrons in jets originating from quark of light flavour. In this paper we calculate the average of charged particle multiplicities in light flavour quark jets in e+e-→q 00→h′s events. We find that in e+e-→q00→h′s events with different primary quarks, the average production probability of uds quark. so the yields of directly production hadrons are related to the number of quark pairs. The symmetry of isospin and strangeness suppression factor etc are dependent on the flavor of prompt quark, and this dependence is more obvious in low energy region. But the final average multiplicities of charged particles seem to be equal in three kinds of light q0 jet events, which shows that our results are consistent to the predictions of QCD, i.e. the strong interaction is irrelevant to the quark flavor.

References

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LIU Xi-Ming. Test of Flavor Independence in Strong Interaction[J]. Chinese Physics C, 2004, 28(10): 1026-1032.

LIU Xi-Ming. Test of Flavor Independence in Strong Interaction[J]. Chinese Physics C, 2004, 28(10): 1026-1032. shu

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Received: 2004-04-14
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

Test of Flavor Independence in Strong Interaction

LIU Xi-Ming ^,

Corresponding author: LIU Xi-Ming,

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

Received Date: 2004-04-14
Accepted Date: 1900-01-01
Available Online: 2004-10-05

Abstract: The flavour independence of the strong coupling is a fundmental property of quantum chromodynamics(QCD). The observable which can be employed to test flavour independence is the multiplicity of charged hadrons in jets originating from quark of light flavour. In this paper we calculate the average of charged particle multiplicities in light flavour quark jets in e+e-→q 00→h′s events. We find that in e+e-→q00→h′s events with different primary quarks, the average production probability of uds quark. so the yields of directly production hadrons are related to the number of quark pairs. The symmetry of isospin and strangeness suppression factor etc are dependent on the flavor of prompt quark, and this dependence is more obvious in low energy region. But the final average multiplicities of charged particles seem to be equal in three kinds of light q0 jet events, which shows that our results are consistent to the predictions of QCD, i.e. the strong interaction is irrelevant to the quark flavor.