Production cross section and topological decay branching fractions of the ðœ lepton

S Abachi; M Derrick; P Kooijman; B Musgrave; L E Price; J Repond; K Sugano; D Blockus; B Brabson; J M Brom; C Jung; H Ogren; D R Rust; C Akerlof; J Chapman; D Errede; M T Ken; D I Meyer; H Neal; D Nitz; R Thun; R Tschirhart; P Baringer; B G Bylsma; R Debonte; D Koltick; E H Low; R L Mcilwain; D H Miller; C R NG; E I Shibata

doi:10.1103/PhysRevD.40.902

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$Production cross section and topological decay branching fractions of the ðœ lepton$

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Production cross section and topological decay branching fractions of the ðœ lepton

S Abachi, M Derrick, P Kooijman, B Musgrave, L E Price, J Repond, K Sugano, D Blockus, B Brabson, J M Brom, …

Physical review. D, Particles and fields, Vol.40(3), pp.902-905

08/01/1989

DOI: 10.1103/PhysRevD.40.902

PMID: 10011891

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Abstract

We report new measurements of the production cross section for the reaction 𝑒+⁢𝑒−→𝜏+⁢𝜏− at √𝑠=29 GeV, as well as the topological decay branching fractions of the 𝜏 lepton. The data were taken with the High Resolution Spectrometer at the SLAC 𝑒+⁢𝑒− colliding-beam facility PEP. The measured cross section yields 𝑅𝜏⁢𝜏=1.044±0.014±0.030 [where the first (second) error is statistical (systematic)], consistent with QED and corresponding to QED cutoff parameters of 𝛬+>129 GeV and 𝛬−>284 GeV at the 95% C.L. The fractions of 𝜏 decays into one and three charged particles are 𝐵1=0.864±0.003±0.003 and 𝐵3=0.135±0.003±0.003.

Physical Sciences

Physics

Astronomy & Astrophysics

Physics, Particles & Fields

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Details

Title: Subtitle: Production cross section and topological decay branching fractions of the ðœ lepton
Creators: S Abachi
M Derrick
P Kooijman
B Musgrave
L E Price
J Repond
K Sugano
D Blockus
B Brabson
J M Brom
C Jung
H Ogren
D R Rust
C Akerlof
J Chapman
D Errede
M T Ken
D I Meyer
H Neal
D Nitz
R Thun
R Tschirhart
P Baringer
B G Bylsma
R Debonte
D Koltick
E H Low
R L Mcilwain
D H Miller
C R NG
E I Shibata
Resource Type: Journal article
Publication Details: Physical review. D, Particles and fields, Vol.40(3), pp.902-905
DOI: 10.1103/PhysRevD.40.902
PMID: 10011891
NLM abbreviation: Phys Rev D Part Fields
ISSN: 0556-2821
eISSN: 1089-4918
Publisher: American Physical Society
Number of pages: 4
Language: English
Date published: 08/01/1989
Academic Unit: Physics and Astronomy
Record Identifier: 9984627328402771

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