A Search for scalar leptoquarks in Z0 decays
Collaboration
12 pages
Published in:
- Phys.Lett.B 263 (1991) 123-134
- Published: 1991
Report number:
- CERN-PPE-91-61
Experiments:
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Abstract: (Elsevier)
A search for scalar leptoquarks has been performed with data from the OPAL detector at the e + e − storage ring LEP. In a data sample corresponding to an integrated luminosity of 6.3 pb −1 no evidence for leptoquark production was observed where the leptoquark decays into a quark and either a charged lepton (e, μ , τ ) or a neutrino. An upper limit of 1.7 pb on the production cross section for leptoquarks is obtainedassuming a branching ratio of 50% for the decay of the leptoquark into the channels with a charged lepton. Lower limits on the leptoquark mass between 41.4 and 46.4 GeV/ c 2 at 95% CL are obtained, depending on the effecte SU(2) × U(1) invariant couplings assigned to the leptoquark.- electron positron: colliding beams
- colliding beams: electron positron
- electron positron: annihilation
- annihilation: electron positron
- Z0: electroproduction
- electroproduction: Z0
- Z0: decay
- decay: Z0
- postulated particle: leptoquark
- search for: leptoquark
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