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A Study of the Upper Limit of vτ-Mass at BEPC |
| DU Dongsheng;GU Jianhui;HUANG Tao;JIN Shan;LI Jin;LIU Chun |
| Institute of High Energy Physics, Academia Sinica, Beijing 100039 |
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| Cite this article: |
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DU Dongsheng, GU Jianhui, HUANG Tao et al 1993 Chin. Phys. Lett. 10 83-85 |
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Abstract By using the new result of τ-mass from Beijing spectrometer and the data of τ→5πvτ from ARGUS, the upper limit of vτ-mass of 30 MeV is obtained at 95% confidence level. The upper limit of the vτ-mass could be largely reduced if a high resolution detector is used in the improved Beijing electron positron collider, which is under discussion.
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| Keywords:
14.60.Gh
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Published: 01 February 1993
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