HEAVY LEPTON τ PRODUCED IN e+e- ANNIHILATION BY THE INTERFERENCE BETWEEN ELECTROMAGNETIC AND WEAK INTERACTIONS AND PARITY VIOLATION EFFECTS

WU JING-YUAN; WU DAN-DI; LI XIAO-YUAN

Chinese Physics C> 1979, Vol. 3> Issue(1) : 108-112

HEAVY LEPTON τ PRODUCED IN e⁺e^- ANNIHILATION BY THE INTERFERENCE BETWEEN ELECTROMAGNETIC AND WEAK INTERACTIONS AND PARITY VIOLATION EFFECTS

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Abstract：
We propose the precise measurement of energy spectra of cascade π and ρ inprocesses e⁺e^-→τ⁺τ^-→e⁺π^-（p^-,μ^-）+ neutrinos in order to determine parity-violatingeffects due to the interference between the electromagnetic and weak neutral currentinteractions.These observations are feasible especially at heavy narrow resonances.Empirically we conjecture that the next quarkonium may be at 28—31 GeV.

References

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N. Cabibbo and R. Gatto, Phys. Rev., 124 (1961), 1577; V. K. Cung, A. K. Mann, E. A. Paschoas, Phys. Lett., 41B (1972), 355; J. Godine and A. Hankey, Phys. Rev., D6 (1972), 3301; D. A. Dicus, Phys. Rev., D8 (1973), 890; R. W. Brows, Phys. Lett., 43B (1973), 403; B. Kayser, S. P. Roson and E. Fischbach, Phys. Rev., D11(1975), 2547; G. J, Komen, Phys. Lett., 68B (1977), 275.[2] Aachen-DESY-FOM-MIT-Minnesota-Sontheastern Massachusets University, Mark J. Experiment,in Preparation, PETRA 76/15[3] Y. S. Tsai, Phys. Rev., D4 (1971), 2821;idid., 13 (1976),771(E);F. Bletzacker and H. T. Nieh. Phys. Rev., D14 (1976), 1251.[4] 伍经元、李小源、陈中谈，高能物理与核物理，2(1978), 236.[5] M. Holder et }1., Phys. Lett., 71B (1977), 222;Phys. Lett., 72B (1977), 254.[6] 伍经元、李小源，横向极化的e+e-对撞中μ对的产生和弱中性流的时空结构(未发表).B. Kayser, S. P. Roson and E.Fischbach, Phys. Rev., D11(1975), 2547.

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WU JING-YUAN, WU DAN-DI and LI XIAO-YUAN. HEAVY LEPTON τ PRODUCED IN e⁺e^- ANNIHILATION BY THE INTERFERENCE BETWEEN ELECTROMAGNETIC AND WEAK INTERACTIONS AND PARITY VIOLATION EFFECTS[J]. Chinese Physics C, 1979, 3(1): 108-112.

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Received: 1978-04-19
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

HEAVY LEPTON τ PRODUCED IN e⁺e^- ANNIHILATION BY THE INTERFERENCE BETWEEN ELECTROMAGNETIC AND WEAK INTERACTIONS AND PARITY VIOLATION EFFECTS

Received Date: 1978-04-19
Accepted Date: 1900-01-01
Available Online: 1979-02-05

Abstract: We propose the precise measurement of energy spectra of cascade π and ρ inprocesses e⁺e^-→τ⁺τ^-→e⁺π^-（p^-,μ^-）+ neutrinos in order to determine parity-violatingeffects due to the interference between the electromagnetic and weak neutral currentinteractions.These observations are feasible especially at heavy narrow resonances.Empirically we conjecture that the next quarkonium may be at 28—31 GeV.