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Measurement of the inclusive branching fraction tau/sup -/. --> nu. /sub tau/. pi. /sup -/. pi. /sup 0/+ neutral meson(s)

Journal Article · · Phys. Rev. Lett.; (United States)
; ; ; ; ; ; ; ; ;
We measure an inclusive branching fraction of (13.9 +- 2.0/sub -2.2//sup +1.9/)% for the decay tau/sup -/..--> nu../sub tau/..pi../sup -/..pi../sup 0/+nh/sup 0/ (ngreater than or equal to1), where h/sup 0/ is a ..pi../sup 0/ or an eta. The data sample, obtained with the time-projection chamber detector facility at the SLAC e/sup +/e/sup -/ storage ring PEP, corresponds to an integrated luminosity of 72 pb/sup -1/ at 29-GeV center-of-mass energy. The measured branching fraction is somewhat greater than the theoretical prediction and, with errors taken into account, could resolve the present difference between the inclusive and the sum of the exclusive tau/sup +- / branching fractions into one charged prong.
Research Organization:
Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720
DOE Contract Number:
AC03-76SF00098; AA03-76SF00034; AC02-76ER03330
OSTI ID:
7251816
Journal Information:
Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 57:15; 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
BOSONS
BRANCHING RATIO
DECAY
ELEMENTARY PARTICLES
ETA MESONS
FERMIONS
GAS TRACK DETECTORS
HADRONS
HEAVY LEPTONS
LEPTONS
MASS SPECTRA
MASSLESS PARTICLES
MEASURING INSTRUMENTS
MESONS
MONTE CARLO METHOD
NEUTRINOS
PARTICLE DECAY
PIONS
PIONS MINUS
PIONS NEUTRAL
POSTULATED PARTICLES
PROJECTION SPARK CHAMBERS
PSEUDOSCALAR MESONS
RADIATION DETECTORS
SEMILEPTONIC DECAY
SPARK CHAMBERS
SPECTRA
TAU NEUTRINOS
TAU PARTICLES
WEAK PARTICLE DECAY