Analytic Approximation for Process e++e－→τ++τ－ Cross Section Near Threshold

WU Ji-Min; ZHAO Pei-Ying

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2024年10月30日

Chinese Physics C> 1993, Vol. 17> Issue(4) : 379-383

Analytic Approximation for Process e⁺+e^－→τ⁺+τ^－ Cross Section Near Threshold

WU Ji-Min ^, ,
ZHAO Pei-Ying

Institute of High Energy Physics,Academia Sinica,Beijing 100039

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Abstract：
In the structure function approach,we calculate the threshold behaviours for e⁺+e^－→τ⁺+τ^－,which including QED radiative corrections from initial correction,vacuum polarization effect,Coulomb effect and final state correction.This theoretical prediction for threshold behaviours of τ-pair production is useful for BES new measurement of lepton τ mass.

References

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W. Marciano and A. Sirlin, Phys. Rev. Lett., 61(1988), 1815.[2]Particle Data Group, Phys. Lett., 238B(1990), 1.[3]J. Z. Bai et al., (BES Collaboration) Phys. Rev. Lctt., 69(1992), 3021.[4]R. Brandelik et al., Phys. Lett., 73B(197d), 109. (DASP) W. Bartel et al., Phys. Leu., 77B(1978), 331. (DESY) W. Bacino et al., Phys. Rev., Lett., 41(1973), 13. (DLCO) C.A.Blocker. LBL-10801 (Thesis) (Mark 1I)[5]F. A. Berends, K. J. F. Gaemers, R. Gastmans,Nucl., Phys,B57(1973). 381.[6]吴济民,高能物理与核物理,16(1992),518.[7]吴济民,"在e+e-对撞过程中辐射因子的严格计算",高能物理与核物理待发表.[8]L. D. Landau and E: M. Lifshitz, Quantum Mechanics 3rd. (Pergamon Press 1977) p. 123[9]J. Schwinger, Particles, Sources, and Fields Vol. III (Addison-Wesley, 1989) p. 109.[10]M. R. Voloshin. TPI-MINN-89/33-T.

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WU Ji-Min and ZHAO Pei-Ying. Analytic Approximation for Process e⁺+e^－→τ⁺+τ^－ Cross Section Near Threshold[J]. Chinese Physics C, 1993, 17(4): 379-383.

WU Ji-Min and ZHAO Pei-Ying. Analytic Approximation for Process e⁺+e^－→τ⁺+τ^－ Cross Section Near Threshold[J]. Chinese Physics C, 1993, 17(4): 379-383. shu

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

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Analytic Approximation for Process e⁺+e^－→τ⁺+τ^－ Cross Section Near Threshold

WU Ji-Min ^,
ZHAO Pei-Ying

Corresponding author: WU Ji-Min,

Institute of High Energy Physics,Academia Sinica,Beijing 100039

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1993-04-05

Abstract: In the structure function approach,we calculate the threshold behaviours for e⁺+e^－→τ⁺+τ^－,which including QED radiative corrections from initial correction,vacuum polarization effect,Coulomb effect and final state correction.This theoretical prediction for threshold behaviours of τ-pair production is useful for BES new measurement of lepton τ mass.