Production cross section and topological decay branching fractions of theτlepton | Zendy

S. Abachi | Zendy; M. Derrick | Zendy; P. Kooijman | Zendy; B. Musgrave | Zendy; L. E. Price | Zendy; J. Repond | Zendy; K. Sugano | Zendy; D. Blockus | Zendy; B. Brabson | Zendy; J.-M. Brom | Zendy; C. K. Jung | Zendy; H. Ogren | Zendy; D. R. Rust | Zendy; C. Akerlof | Zendy; J. Chapman | Zendy; D. Errede | Zendy; M. T. Ken | Zendy; D. I. Meyer | Zendy; H. A. Neal | Zendy; D. Nitz | Zendy; R. Thun | Zendy; R. Tschirhart | Zendy; P. Baringer | Zendy; Ben Bylsma | Zendy; R. DeBonte | Zendy; D. Koltick | Zendy; E. H. Low | Zendy; R. L. McIlwain | Zendy; D. H. Miller | Zendy; C. R. Ng | Zendy; E. I. Shibata | Zendy

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Production cross section and topological decay branching fractions of theτlepton

Author(s) -

S. Abachi,

M. Derrick,

P. Kooijman,

B. Musgrave,

L. E. Price,

J. Repond,

K. Sugano,

D. Blockus,

B. Brabson,

J.-M. Brom,

C. K. Jung,

H. Ogren,

D. R. Rust,

C. Akerlof,

J. Chapman,

D. Errede,

M. T. Ken,

D. I. Meyer,

H. A. Neal,

D. Nitz,

R. Thun,

R. Tschirhart,

P. Baringer,

Ben Bylsma,

R. DeBonte,

D. Koltick,

E. H. Low,

R. L. McIlwain,

D. H. Miller,

C. R. Ng,

E. I. Shibata

Publication year - 1989

Publication title -

physical review. d. particles, fields, gravitation, and cosmology/physical review. d. particles and fields

Language(s) - English

Resource type - Journals

eISSN - 1089-4918

pISSN - 0556-2821

DOI - 10.1103/physrevd.40.902

Subject(s) - physics , lepton , branching fraction , particle physics , branching (polymer chemistry) , nuclear physics , cross section (physics) , cutoff , quantum mechanics , materials science , composite material , electron

We report new measurements of the production cross section for the reaction /ital e//sup +/e/sup /minus///r arrow//tau//sup +//tau//sup /minus// at /radical//ital s/ =29 GeV, as well as the topological decay branching fractions of the /tau/ lepton. The data were taken with the High Resolution Spectrometer at the SLAC /ital e//sup +/e/sup /minus// colliding-beam facility PEP. The measured cross section yields /ital R//sub /tau//tau//=1.044/plus minus/0.014/plus minus/0.030 (where the first (second) error is statistical (systematic)), consistent with QED and corresponding to QED cutoff parameters of /Lambda//sub +//gt/129 GeV and /Lambda//sub /minus///gt/284 GeV at the 95% C.L. The fractions of /tau/ decays into one and three charged particles are /ital B//sub 1/=0.864/plus minus/0.003/plus minus/0.003 and /ital B//sub 3/=0.135/plus minus/0.003/plus minus/0.003.

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