Search for chargino pair production in scenarios with gravitino LSP and stau NLSP at S**(1/2) approximately equal to 183-GeV at LEP

Abreu, P.;Cortina Gil, Eduardo;DELPHI Collaboration;et.al.
(1999) Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics — Vol. 466, n° 1, p. 61-70 (1999)

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Abstract
Promptly decaying lightest charginos were searched for in the context of scenarios with gravitino LSP. It was assumed that the stau is the next to lightest supersymmetric particle (NLSP). Data collected with the DELPHI detector at a centre-of-mass energy near 183 GeV were analysed combining the methods developed in previous searches. No evidence for the production of these particles was found. Hence, limits were derived at 95% confidence level. The mass of charginos was found to be greater than 85.5 GeV/c2 for View the MathML source, independently of the mass of the gravitino.
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Abreu, P., Cortina Gil, E., DELPHI Collaboration, & et al. (1999). Search for chargino pair production in scenarios with gravitino LSP and stau NLSP at S**(1/2) approximately equal to 183-GeV at LEP. Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics, 466(1), 61-70. https://doi.org/10.1016/S0370-2693(99)01105-3 (Original work published 1999)