Measurement of the lifetime of the tau lepton

M. Acciarri, P. Achard, O. Adriani, M. Aguilar-Benitez, J. Alcaraz, G. Alemanni, J. Allaby, A. Aloisio, M. G. Alviggi, G. Ambrosi, H. Anderhub, V. P. Andreev, T. Angelescu, F. Anselmo, A. Arefiev, T. Azemoon, T. Aziz, P. Bagnaia, A. Bajo, L. BaksayA. Balandras, S. Banerjee, Sw Banerjee, A. Barczyk, R. Barillère, L. Barone, P. Bartalini, M. Basile, R. Battiston, A. Bay, F. Becattini, U. Becker, F. Behner, L. Bellucci, R. Berbeco, J. Berdugo, P. Berges, B. Bertucci, B. L. Betev, S. Bhattacharya, M. Biasini, A. Biland, J. J. Blaising, S. C. Blyth, G. J. Bobbink, A. Böhm, L. Boldizsar, B. Borgia, D. Bourilkov, M. Bourquin, S. Braccini, J. G. Branson, V. Brigljevic, F. Brochu, A. Buffini, A. Buijs, J. D. Burger, W. J. Burger, X. D. Cai, M. Campanelli, M. Capell, G. Cara Romeo, G. Carlino, A. M. Cartacci, J. Casaus, G. Castellini, F. Cavallari, N. Cavallo, C. Cecchi, M. Cerrada, F. Cesaroni, M. Chamizo, Y. H. Chang, U. K. Chaturvedi, M. Chemarin, A. Chen, G. Chen, G. M. Chen, H. F. Chen, H. S. Chen, G. Chiefari, L. Cifarelli, F. Cindolo, C. Civinini, I. Clare, R. Clare, G. Coignet, A. P. Colijn, N. Colino, S. Costantini, F. Cotorobai, B. Cozzoni, B. De la Cruz, A. Csilling, S. Cucciarelli, T. S. Dai, J. A. Van Dalen

研究成果: 雜誌貢獻期刊論文同行評審

20 引文 斯高帕斯(Scopus)

摘要

The tau lepton lifetime is measured with the L3 detector at LEP using the complete data taken at centre-of-mass energies around the Z pole resulting in τ(τ) = 293.2 ± 2.0 (stat) ± 1.5 (syst) fs. The comparison of this result with the muon lifetime supports lepton universality of the weak charged current at the level of six per mille. Assuming lepton universality, the value of the strong coupling constant, α(s) is found to be α(s)(m(τ)/2) = 0.319 ± 0.015 (exp) ± 0.014 (theory). (C) 2000 Elsevier Science B.V.

原文???core.languages.en_GB???
頁(從 - 到)67-78
頁數12
期刊Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
479
發行號1-3
DOIs
出版狀態已出版 - 20 4月 2000

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