Measurement of the branching ratio for the decay. tau. sup minus r arrow e sup minus. nu. sub e. nu. sub. tau

Journal Article · Thu Mar 01 00:00:00 EST 1990 · Physical Review, D (Particles Fields); (USA)

DOI:https://doi.org/10.1103/PhysRevD.41.1414· OSTI ID:6850677

Abachi, S; Derrick, M; Kooijman, P; Musgrave, B; Price, L; Repond, J; Sugano, K ^[1]; Blockus, D; Brabson, B; Brom, J; Jung, C; Ogren, H; Rust, D R ^[2]; Cork, B ^[3]; Akerlof, C; Chapman, J; Errede, D; Ken, M T; Meyer, D I; Neal, H ; Nitz, D; Thun, R; Tschirhart, R ^[4]; Baringer, P; Bylsma, B G; DeBonte, R; Koltick, D; Low, E H; McIlwain, R L; Miller, D H; Ng, C R; Shibata, E ^[5]

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1. Argonne National Laboratory, Argonne, Illinois 60439 (USA)
2. Indiana University, Bloomington, Indiana 47405 (USA)
3. Lawrence Berkeley Laboratory, Berkeley, California 94720 (USA)
4. University of Michigan, Ann Arbor, Michigan 48109 (USA)
5. Purdue University, W. Lafayette, Indiana 47907 (USA)

This paper reports a new measurement of the branching ratio for the decay {tau}{sup {minus}}{r arrow}{ital e}{sup {minus}}{bar {nu}}{sub {ital e}}{nu}{sub {tau}}. The data were taken with the High Resolution Spectrometer at the SLAC {ital {ital e}}{sup +}{ital e}{sup {minus}} colliding-beam facility PEP, operating at {radical}{ital s}=29 GeV. The result {ital B}({tau}{sup {minus}}{r arrow}{ital e}{sup {minus}}{bar {nu}}{sub {ital e}}{nu}{sub {tau}})=(17.0{plus minus}0.5{plus minus}0.5)%, together with our measurements of the lifetime and the topological branching fractions of the {tau} lepton are compared with theoretical expectations.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6850677
• Journal Information: Physical Review, D (Particles Fields); (USA), Vol. 41:5; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
TAU PARTICLES
DECAY
BHABHA SCATTERING
BRANCHING RATIO
CHERENKOV COUNTERS
ELECTRON NEUTRINOS
ELECTRON-POSITRON INTERACTIONS
ELECTRONS
EXPERIMENTAL DATA
GEV RANGE 10-100
LIFETIME
LUMINOSITY
PARTICLE PRODUCTION
PEP STORAGE RINGS
QUANTUM ELECTRODYNAMICS
TAU NEUTRINOS
DATA
ELASTIC SCATTERING
ELECTRODYNAMICS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
FIELD THEORIES
GEV RANGE
HEAVY LEPTONS
INFORMATION
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
LEPTONS
MASSLESS PARTICLES
MEASURING INSTRUMENTS
NEUTRINOS
NUMERICAL DATA
OPTICAL PROPERTIES
PARTICLE INTERACTIONS
PHYSICAL PROPERTIES
POSTULATED PARTICLES
QUANTUM FIELD THEORY
RADIATION DETECTORS
SCATTERING
STORAGE RINGS
645102* - High Energy Physics- Particle Interactions & Properties-Experimental- Weak Interactions & Properties