Measurement of the decay tau. -->. rho. nu

Journal Article · Mon Oct 05 04:00:00 EDT 1987 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.59.1527· OSTI ID:5858846

Adler, J; Becker, J J; Blaylock, G T; Bolton, T; Brown, J S; Bunnell, K O; Burnett, T H; Cassell, R E; Coffman, D; Cook, V

The decay tau..-->..rho..nu.. is studied in tau pair production by e/sup +/e/sup -/ annihilation at ..sqrt..s = 3.77 GeV, 0.20 GeV above tautau threshold. The branching fraction is measured to be B(tau..-->..rho..nu..) = (23.0 +- 1.3 +- 1.7)%. The measured distribution of the helicity angle of the charged pion from the rho decay agrees with the theoretical prediction.

• Research Organization: California Institute of Technology, Pasadena, California 91125; University of California at Santa Cruz, Santa Cruz, California 95064; University of Illinois at Urbana-Champaign, Urbana, Illinois 61801; Stanford Linear Accelerator Center, Stanford, California 94305; University of Washington
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 5858846
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 59:14; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

645102* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
BASIC INTERACTIONS
BOSONS
BRANCHING RATIO
DECAY
ELECTRODYNAMICS
ELECTROMAGNETIC INTERACTIONS
ELECTROMAGNETIC RADIATION
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
ENERGY
ENERGY RANGE
FERMIONS
FIELD THEORIES
GAMMA RADIATION
GEV RANGE
GEV RANGE 01-10
HADRONS
HEAVY LEPTONS
HELICITY
INTERACTIONS
IONIZING RADIATIONS
LEPTON-LEPTON INTERACTIONS
LEPTONS
MASS SPECTRA
MASSLESS PARTICLES
MATHEMATICAL MODELS
MESONS
MEV RANGE
MEV RANGE 100-1000
MONTE CARLO METHOD
MUONS
NEUTRINOS
PAIR PRODUCTION
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PROPERTIES
PIONS
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
QUANTUM ELECTRODYNAMICS
QUANTUM FIELD THEORY
RADIATIONS
SPECTRA
STANDARD MODEL
TAU PARTICLES
THRESHOLD ENERGY
TIME-OF-FLIGHT METHOD
UNIFIED GAUGE MODELS