A Search for Acoplanar Pairs of Leptons or Jets in $\Z^0$ Decays: Mass Limits on Supersymmetric Particles - INSPIRE

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A Search for Acoplanar Pairs of Leptons or Jets in $\Z^0$ Decays: Mass Limits on Supersymmetric Particles

OPAL

Collaboration

•

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

Dec, 1989

10 pages

Published in:

Phys.Lett.B 240 (1990) 261-270

Published: 1990

DOI:

10.1016/0370-2693(90)90444-B

Report number:

CERN-EP-89-176

Experiments:

CERN-LEP-OPAL

View in:

reference search117 citations

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Abstract: (Elsevier)

We have searched for Z 0 decays into acoplanar pairs of leptons or jets. The data were recorded with the OPAL detector during an energy scan around the Z 0 peak and correspond to about 17000 produced Z 0, s. We have determined model independent limits on branching ratios for the Z 0 to decay into pairs of heavy particles with subsequent decays leading to the above topologies. In the context of supersymmetric models, mass bounds close to the kinematic limit were obtained for the scalar leptons, ẽ, g̃m, g̃t, and for the chargino, X̃ ± .

electron positron: colliding beams
colliding beams: electron positron
electron positron: annihilation
annihilation: electron positron
Z0: electroproduction
electroproduction: Z0
Z0: decay modes
decay modes: Z0
final state: dilepton
dilepton: final state

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