Title of article
Searches for prompt light gravitino signatures in e+e− collisions at s=189 GeV
Author/Authors
OPAL Collaboration، نويسنده , , G. Abbiendi، نويسنده , , K. Ackerstaff، نويسنده , , C. Ainsley، نويسنده , , P.F. Akesson، نويسنده , , G. Alexander، نويسنده , , J. Allison، نويسنده , , K.J. Anderson، نويسنده , , S. Arcelli، نويسنده , , S. Asai، نويسنده , , S.F Ashby، نويسنده , , D. Axen، نويسنده , , G. Azuelos، نويسنده , , I. Bailey، نويسنده , , A.H. Ball، نويسنده , , E. Barberio، نويسنده , , R.J. Barlow، نويسنده , , J.R. Batley، نويسنده , , Leslie S. Baumann، نويسنده , , T. Behnke، نويسنده , , et al.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2001
Pages
16
From page
12
To page
27
Abstract
Searches for final states expected in models with light gravitinos have been performed, including experimental topologies with multi-leptons with missing energy, leptons and photons with missing energy, and jets and photons with missing energy. No excess over the expectations from the Standard Model has been observed. Limits are placed on production cross-sections in the different experimental topologies. Additionally, combining with searches for the anomalous production of lepton and photon pairs with missing energy, results are interpreted in the context of minimal models of gauge mediated SUSY breaking. Exclusion limits at the 95% confidence level on the supersymmetric particle masses of mℓ̃> 83 GeV and mχ̃10> 85 GeV for tanβ=2, and mτ̃> 69 GeV, mẽ,μ̃> 88 GeV and mχ̃10> 76 GeV for tanβ=20, are established.
Journal title
PHYSICS LETTERS B
Serial Year
2001
Journal title
PHYSICS LETTERS B
Record number
913894
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