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arXiv hep-ex/9703003hep-ex
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在sqrt{s}=58 GeV处e+ e湮灭中τ极化的测量

Measurement of tau polarization in e+ e- annihilation at sqrt{s}=58 GeV

H. Hanai

摘要:

利用TRISTAN电子对撞机,在质心能量为58 GeV的条件下,测量了反应e+ e-> tau+ tau-中τ轻子的极化。根据τ-> e nu nu bar、mu nu nu bar、rho nu和pi(K)nu衰变中子粒子的运动学分布,估算出τ-的平均极化及其前后不对称性分别为0.012 ± 0.058和0.029 ± 0.057。

英文摘要:

The polarization of tau leptons in the reaction e+ e- --> tau+ tau- has been measured using a e+e- collider, TRISTAN, at the center-of-mass energy of 58 GeV. From the kinematical distributions of daughter particles in tau --> e nu nu-bar, mu nu nu-bar, rho nu or pi(K) nu decays, the average polarization of tau- and its forward-backward asymmetry have been evaluated to be 0.012 +- 0.058 and 0.029 +- 0.057, respectively.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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