Update of the search for charginos nearly mass-degenerate with the lightest neutralino
arXiv:hep-ex/0103035 · doi:10.1016/S0370-2693(00)00693-6
Abstract
The data collected by DELPHI in 1998 at the centre-of-mass energy of 189 GeV have been used to update the search for charginos nearly mass-degenerate with the lightest supersymmetric particle, which is assumed to be the lightest neutralino. Mass differences below ΔM = 3 GeV/c^2 are considered. No excess of events with respect to the Standard Model expectation has been observed, and exclusions in the plane of ΔM versus chargino mass are given. The new ΔM independent lower limit on the mass of the chargino is 62.4 GeV/c^2 in the higgsino scenario (which includes the gaugino mass unification scenario), if all sfermions are heavier than the lightest chargino. In the approximation of large sfermion masses the limit is 59.8 GeV/c^2, independently of the field content.
arXiv comment14 pages, 5 figures
References in corpus (8)
- Gaugino Mass without Singlets
- Towards a Theory of Soft Terms for the Supersymmetric Standard Model
- Phenomenological consequences of supersymmetry with anomaly-induced masses
- EXCALIBUR -- a Monte Carlo program to evaluate all four fermion processes at LEP 200 and beyond
- Massive Doublet Leptons
- grc4f v1.0: a Four-fermion Event Generator for e+e- Collisions
- grc4f v1.1: a Four-fermion Event Generator for e+e- Collisions
- Search for charginos nearly mass-degenerate with the lightest neutralino
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- Compressing the Inert Doublet Model
- Probing Models with Near Degeneracy of the Chargino and LSP at a Linear e+e- Collider
- Limits on the Masses of Supersymmetric Particles at sqrt(s)=189 GeV
- The case for 100 GeV bino dark matter: A dedicated LHC tri-lepton search
- Supersymmetric Grand Unification with a Fourth Generation?