Tau-neutrino helicity from h+- energy correlations

Coan, T.E.; Fadeev, V.; Korolkov, I.; Maravin, Y.; Narsky, Ilya V.; Shelkov, V.; Staeck, J.; Stroynowski, R.; Volobouev, I.; Ye, J.

doi:10.1103/PhysRevD.55.7291

Tau-neutrino helicity from h+- energy correlations

CLEO

Collaboration

Jan, 1997

11 pages

Published in:

Phys.Rev.D 55 (1997) 7291-7295

e-Print:

hep-ex/9701012 [hep-ex]

DOI:

10.1103/PhysRevD.55.7291

PDG:

\xi

(all hadronic modes) PARAMETER

Report number:

CLNS-96-1450A,
CLEO-96-21,
SLAC-PUB-9799

Experiments:

CESR-CLEO-II

View in:

reference search13 citations

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Abstract:

We report a measurement of the magnitude of the tau neutrino helicity from tau-pair events taken with the CLEO detector at the CESR electron-positron storage ring. Events in which each tau undergoes the decay tau -> h nu, with h a charged pion or kaon, are analyzed for energy correlations between the daughter hadrons, yielding |xi| = 2*|h_nu| = 1.03 +/- 0.06 +/- 0.04, with the first error statistical and the second systematic.

14.60.Lm
14.60.Fg
electron positron: colliding beams
electron positron: annihilation
tau: electroproduction
tau: pair production
tau: semileptonic decay
energy: correlation
neutrino/tau: helicity
CLEO

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