Abstract
We have studied 419 τ pair events produced in the reactione + e −→τ+ τ− at a c.m. energy of 34.6 GeV. We measure the cross section and angular distribution, as well as the decay branching ratios. The production characteristics are consistent with the Standard Electroweak Model predictions of γ andZ 0 interference. The branching ratios are generally consistent with the τ decaying according to standard weak interaction principles, but we observe somewhat more decays resulting in single charged hadrons plus neutrals than are predicted by present theory.
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A. Salam: Rev. Mod. Phys.52, 525 (1980); S. L. Glashow: Rev. Mod. Phys.52, 539 (1980); S. Weinberg: Rev. Mod. Phys.52, 515 (1980); S. Weinberg: Phys. Rev. Lett.12, 1264 (1967); A. Salam: Proceedings of the 8'th Nobel Symposium (1968); S.L. Glashow: Nucl. Phys.22, 579 (1961)
H.B. Thacker, J. Sakurai: Phys. Lett.36 B, 103 (1971); Y.S. Tsai: Phys. Rev.D 4, 2821 (1971); N. Kawamoto, A.I. Sanda: Phys. Lett.76 B, 446 (1978); F.J. Gilman, D.H. Miller: Phys. Rev.D17, 1846 (1978); D.A. Geffen, W.J. Wilson: Phys. Rev.D18, 2488 (1978); T.N. Pham, C. Roiesnel, T.N. Truong: Phys. Lett.78 B, 623 (1978); H. goldberg, R. Aaron: Phys. Rev. Lett.42, 339 (1979)
F.J. Gilman, S.H. Rhie: SLAC-PUB-3444, Sept. 1984 (unpublished)
Tran N. Truong: Phys. Rev.D 30; 1509 (1984)
L. Criegee, G. Knies: Phys. Rep.83, 152 (1982)
P. Hoyer et al.: Nucl. PhysicsB 161, 349 (1979), R.D. Field, R. P. Feynman: Nucl. Phys.B 136, 1 (1978); J.A.M. Vermaseren: Proceedings of the International Workshop on γγ Interactions, Amiens (1980). Lecture Notes in Physics 134. Berlin, Heidelberg, New York: Springer 1980
F.A. Berends, R. Kleiss: Nuclear Phys.B 177, 237 (1981); F.A. Berends, R. Kleiss, S. Jadach: Nucl. Phys.B 202, 63 (1982)
Particle Data Group: Rev. Mod. Phys.56, No. 2, Part II (1984)
C.A. Blocker et al., (MARK II): Phys. Rev. Lett.49, 1369 (1982); H.J. Behrend et al. (CELLO): Phys. Lett.114 B, 282 (1982); H.J. Behrend et al. (CELLO): Z. Phys. C — Particles and Fields23, 103 (1984); H. Aihara et al. (TPC): Phys. Rev.D 30, 2436 (1984); M. Althoff et al. (TASSO): Z. Phys. C—Particles and Fields26, 521 (1985)
W. Ruckstuhl: Talk at the Topical Conference of the 1984 SLAC Summer Institute on Particle Physics, July 23–Aug. 3, 1984 (unpublished)
Ch. Berger et al., (PLUTO): Z. Phys. C — Particles and Fields21, 53 (1983)
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Deceased
Supported by the BMFT, FRG
Partially supported by The Norwegian Council for Science and the Humanities
Rome University, partially supported by I.N.F.N., Sezione di Roma, Italy
Supported by the U.K. Science and Engineering Research Council
Partially supported by the Department of Energy, USA
Partially supported by the Israeli Academy of Sciences and Humanities-Basic Research Foundation
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PLUTO Collaboration., Berger, C., Genzel, H. et al. Measurements of Tau-Lepton production and decay. Z. Phys. C - Particles and Fields 28, 1–8 (1985). https://doi.org/10.1007/BF01550242
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DOI: https://doi.org/10.1007/BF01550242