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Study of the decay tau/sup -/. --> pi. /sup -/. pi. /sup -/. pi. /sup +/. nu. /sub tau/

Journal Article · · Phys. Rev. Lett.; (United States)
; ; ; ; ; ; ; ; ;
The branching ratios for tau/sup -/..--> pi../sup -/..pi../sup -/..pi../sup +/..nu../sub tau/ and tau/sup -/..--> pi../sup -/..pi../sup -/..pi../sup +/(n..pi../sup 0/)..nu.. /sub tau/, ngreater than or equal to1, have been measured to be 0.078 +- 0.005 +- 0.008 and 0.047 +- 0.005 +- 0.008, respectively. The total three-prong tau branching ratio is 0.128 +- 0.005 +- 0.008. Study of the 3..pi../sup +- /..nu../sub tau/ decay indicates that the three pions are predominantly from a J/sup P/ = 1/sup +/ state which decays through a rho/sup 0/..pi../sup +- / intermediate state in a relative s wave. The rho..pi.. mass spectrum is suggestive of a resonance.
Research Organization:
Lawrence Berkeley Laboratory and Department of Physics, University of California, Berkeley, California 94720; Stanford Linear Accelerator Center, Stanford University, Stanford, California 94305; Department of Physics, Harvard University, Cambridge, Massachusetts 02138
DOE Contract Number:
AC03-76SF00515; AC03-76SF00098
OSTI ID:
5083249
Journal Information:
Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 57:5; ISSN PRLTA
Country of Publication:
United States
Language:
English

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Related Subjects

645102* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR MOMENTUM
BOSONS
BRANCHING RATIO
DATA
DECAY
ELEMENTARY PARTICLES
ENERGY LEVELS
ENERGY RANGE
EXPERIMENTAL DATA
FERMIONS
GEV RANGE
GEV RANGE 10-100
HADRONS
HEAVY LEPTONS
INFORMATION
LEPTONS
LUMINOSITY
MASS SPECTRA
MASSLESS PARTICLES
MESONS
MONTE CARLO METHOD
NEUTRINOS
NUMERICAL DATA
OPTICAL PROPERTIES
PARITY
PARTIAL WAVES
PARTICLE DECAY
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PEP STORAGE RINGS
PHYSICAL PROPERTIES
PIONS
PIONS MINUS
PIONS PLUS
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
RESONANCE
S WAVES
SPECTRA
SPIN
STORAGE RINGS
TAU NEUTRINOS
TAU PARTICLES