Limits on neutral heavy lepton production from Z0 decay - INSPIRE

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Limits on neutral heavy lepton production from Z0 decay

OPAL

Collaboration

•

M.Z. Akrawy
(
- Queen Mary, U. of London
)

May, 1990

10 pages

Published in:

Phys.Lett.B 247 (1990) 448-457

Published: 1990

DOI:

10.1016/0370-2693(90)90924-U

Report number:

CERN-EP-90-72

Experiments:

CERN-LEP-OPAL

View in:

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Abstract: (Elsevier)

Data taken with the OPAL detector at LEP during a scan of the Z 0 resonance were searched for evidence of neutral heavy leptons that decay via mixing. Four different decay modes of the neutral heavy lepton are considered: L 0 → eW ∗ , L 0 →μ W ∗ , L 0 →τ W ∗ , and L 0 → vZ ∗ . No evidence is seen of a neutral heavy lepton signal; branching fraction limits in the range of 10 −3 –10 −4 are set for Z 0 → L 0 L 0 and for Z 0 → v L 0 ( or v L 0 ) relative to Z 0 →hadrons.

electron positron: colliding beams
colliding beams: electron positron
electron positron: annihilation
annihilation: electron positron
Z0: electroproduction
electroproduction: Z0
Z0: leptonic decay
leptonic decay: Z0
heavy lepton: search for
heavy lepton: neutral particle

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