Search for stable hadronizing squarks and gluinos in e+ e- collisions up to s**(1/2) = 209-GeV
May, 200326 pages
Published in:
- Eur.Phys.J.C 31 (2003) 327-342
e-Print:
- hep-ex/0305071 [hep-ex]
Report number:
- CERN-EP-2003-024
Experiments:
Citations per year
Abstract:
Searches for stable, hadronizing scalar quarks and gluinos are performed using the data collected with the ALEPH detector at LEP. Gluon splitting into a gluino or a squark pair is searched for at centre-of-mass energies around the Z resonance, in the e+e- -> q qbar gluino gluino and q qbar squark antisquark processes. Stable squark pair production, and stop pair production with subsequent decays into a stable gluino, stop -> c gluino, are also directly searched for at centre-of-mass energies from 183 to 209 GeV. Altogether, stable hadronizing stop (sbottom) quarks are excluded up to masses of 95 (92) GeV/c2, and stable hadronizing gluinos are excluded up to 26.9 GeV/c2, at 95% confidence level. In the framework of R-parity-conserving supersymmetric models in which the gluino and the stop quark are the two lightest supersymmetric particles, a 95% C.L. lower limit of 80 GeV/c2 is set on the stop quark mass.Note:
- Submitted to The European Physical Journal C Proxy: ccsd ccsd-00000381
- electron positron: colliding beams
- electron positron: annihilation
- sparticle: search for
- gluon: fragmentation
- gluino: pair production
- squark: pair production
- squark: top
- squark: decay
- sparticle: hadronization
- supersymmetry
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