Properties of the proposed τ charged lepton

M. L. Perl, G. L. Feldman, G. S. Abrams, M. S. Alam, A. M. Boyarski, M. Breidenbach, J. Dorfan, W. Chinowsky, G. Goldhaber, G. Hanson, J. A. Jaros, J. A. Kadyk, D. Lüke, V. Lüth, R. J. Madaras, H. K. Nguyen, J. M. Paterson, I. Peruzzi, M. Piccolo, T. P. PunP. A. Rapidis, B. Richter, W. Tanenbaum, J. E. Wiss

Research output: Contribution to journalArticle

Abstract

The anomalous eμ and 2-prong μx events produced in e+e- annihilation are used to determine the properties of the proposed τ charged lepton. We find the τ mass is 1.90 ± 0.10 GeV/c2; the mass of the associated neutrino, ντ, is less than 0.6 GeV/c2 with 95% confidence; V - A coupling is favored over V + A coupling for the τ - ντ current; and the leptonic branching ratios are 0.186 ± 0.010 ± 0.028 from the eμ events and 0.175 ± 0.027 ± 0.030 from the μx events where the first error is statistical and the second is systematic.

Original languageEnglish (US)
Pages (from-to)487-490
Number of pages4
JournalPhysics Letters B
Volume70
Issue number4
DOIs
StatePublished - Oct 24 1977

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leptons
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ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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Perl, M. L., Feldman, G. L., Abrams, G. S., Alam, M. S., Boyarski, A. M., Breidenbach, M., ... Wiss, J. E. (1977). Properties of the proposed τ charged lepton. Physics Letters B, 70(4), 487-490. https://doi.org/10.1016/0370-2693(77)90421-X

Properties of the proposed τ charged lepton. / Perl, M. L.; Feldman, G. L.; Abrams, G. S.; Alam, M. S.; Boyarski, A. M.; Breidenbach, M.; Dorfan, J.; Chinowsky, W.; Goldhaber, G.; Hanson, G.; Jaros, J. A.; Kadyk, J. A.; Lüke, D.; Lüth, V.; Madaras, R. J.; Nguyen, H. K.; Paterson, J. M.; Peruzzi, I.; Piccolo, M.; Pun, T. P.; Rapidis, P. A.; Richter, B.; Tanenbaum, W.; Wiss, J. E.

In: Physics Letters B, Vol. 70, No. 4, 24.10.1977, p. 487-490.

Research output: Contribution to journalArticle

Perl, ML, Feldman, GL, Abrams, GS, Alam, MS, Boyarski, AM, Breidenbach, M, Dorfan, J, Chinowsky, W, Goldhaber, G, Hanson, G, Jaros, JA, Kadyk, JA, Lüke, D, Lüth, V, Madaras, RJ, Nguyen, HK, Paterson, JM, Peruzzi, I, Piccolo, M, Pun, TP, Rapidis, PA, Richter, B, Tanenbaum, W & Wiss, JE 1977, 'Properties of the proposed τ charged lepton', Physics Letters B, vol. 70, no. 4, pp. 487-490. https://doi.org/10.1016/0370-2693(77)90421-X
Perl ML, Feldman GL, Abrams GS, Alam MS, Boyarski AM, Breidenbach M et al. Properties of the proposed τ charged lepton. Physics Letters B. 1977 Oct 24;70(4):487-490. https://doi.org/10.1016/0370-2693(77)90421-X
Perl, M. L. ; Feldman, G. L. ; Abrams, G. S. ; Alam, M. S. ; Boyarski, A. M. ; Breidenbach, M. ; Dorfan, J. ; Chinowsky, W. ; Goldhaber, G. ; Hanson, G. ; Jaros, J. A. ; Kadyk, J. A. ; Lüke, D. ; Lüth, V. ; Madaras, R. J. ; Nguyen, H. K. ; Paterson, J. M. ; Peruzzi, I. ; Piccolo, M. ; Pun, T. P. ; Rapidis, P. A. ; Richter, B. ; Tanenbaum, W. ; Wiss, J. E. / Properties of the proposed τ charged lepton. In: Physics Letters B. 1977 ; Vol. 70, No. 4. pp. 487-490.
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AU - Abrams, G. S.

AU - Alam, M. S.

AU - Boyarski, A. M.

AU - Breidenbach, M.

AU - Dorfan, J.

AU - Chinowsky, W.

AU - Goldhaber, G.

AU - Hanson, G.

AU - Jaros, J. A.

AU - Kadyk, J. A.

AU - Lüke, D.

AU - Lüth, V.

AU - Madaras, R. J.

AU - Nguyen, H. K.

AU - Paterson, J. M.

AU - Peruzzi, I.

AU - Piccolo, M.

AU - Pun, T. P.

AU - Rapidis, P. A.

AU - Richter, B.

AU - Tanenbaum, W.

AU - Wiss, J. E.

PY - 1977/10/24

Y1 - 1977/10/24

N2 - The anomalous eμ and 2-prong μx events produced in e+e- annihilation are used to determine the properties of the proposed τ charged lepton. We find the τ mass is 1.90 ± 0.10 GeV/c2; the mass of the associated neutrino, ντ, is less than 0.6 GeV/c2 with 95% confidence; V - A coupling is favored over V + A coupling for the τ - ντ current; and the leptonic branching ratios are 0.186 ± 0.010 ± 0.028 from the eμ events and 0.175 ± 0.027 ± 0.030 from the μx events where the first error is statistical and the second is systematic.

AB - The anomalous eμ and 2-prong μx events produced in e+e- annihilation are used to determine the properties of the proposed τ charged lepton. We find the τ mass is 1.90 ± 0.10 GeV/c2; the mass of the associated neutrino, ντ, is less than 0.6 GeV/c2 with 95% confidence; V - A coupling is favored over V + A coupling for the τ - ντ current; and the leptonic branching ratios are 0.186 ± 0.010 ± 0.028 from the eμ events and 0.175 ± 0.027 ± 0.030 from the μx events where the first error is statistical and the second is systematic.

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