Search for neutrinoless tau decays involving the K0(S) meson

Chen, S.; Hinson, J.W.; Lee, J.; Miller, David Harry; Pavlunin, V.; Shibata, E.I.; Shipsey, I.P.J.; Cronin-Hennessy, D.; Lyon, A.L.; Park, C.S.

doi:10.1103/PhysRevD.66.071101

Search for neutrinoless tau decays involving the K0(S) meson

CLEO

Collaboration

Aug, 2002

9 pages

Published in:

Phys.Rev.D 66 (2002) 071101

e-Print:

hep-ex/0208019 [hep-ex]

DOI:

10.1103/PhysRevD.66.071101

PDG:

{{\mathit \tau}^{-}}

\rightarrow

{{\mathit e}^{-}}{{\mathit K}_S^0}

{{\mathit K}_S^0}

Report number:

CLNS-02-1795,
CLEO-02-12

Experiments:

CESR-CLEO-II

View in:

ADS Abstract Service

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Abstract:

We have searched for lepton flavor violating decays of the tau lepton with one or two KS0 mesons in the final state. The data used in the search were collected with the CLEO II and II.V detectors at the Cornell Electron Storage Ring (CESR) and correspond to an integrated luminosity of 13.9 fb^-1 at the Upsilon(4S) resonance. No evidence for signals were found, therefore we have set 90% confidence level (C.L.) upper limits on the branching fractions B(tau -> e KS0) < 9.1e-7, B(tau -> mu KS0) < 9.5e-7, B(tau -> e 2KS0) < 2.2e-6, and B(tau -> mu 2KS0) < 3.4e-6. These represent significantly improved upper limits on the two-body decays and first upper limits on the three-body decays.

11.30.Hv
14.60.Fg
13.35.Dx
14.40.Aq
electron positron: colliding beams
electron positron: annihilation
tau: pair production
tau: semileptonic decay
final state: (0neutrino)
flavor: violation

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