• DOI:10.1103/PhysRevD.101.035033
• Corpus ID: 119383221

Illuminating stealth scenarios at the LHC

@article{Kim2020IlluminatingSS,
  title={Illuminating stealth scenarios at the LHC},
  author={Jong Soo Kim and Manuel E. Krauss and V{\'i}ctor Mart{\'i}n-Lozano and Florian Staub},
  journal={Physical Review D},
  year={2020}
}

• Jong Soo Kim, M. Krauss, +1 author F. Staub
• Published 22 December 2018
• Physics
• Physical Review D

Several ideas exist on how the stringent mass limits from LHC on new colored particles can be avoided. One idea are the so-called “stealth” scenarios in which missing transversal energy (ET) is avoided due a peculiar mass configuration. It is usually assumed that the cascade decay of the dominantly produced colored particle finishes in a two-body decay, where this mass configuration leads to a very small amount of ET. We discuss here the potential impact of other decay channels, either loop-induced or via off-shell mediators. It is shown that those channels already become important even for moderate branching ratios of 10%. Larger branching ratios, in particular, into a photon can completely wash out all benefits of the stealth setup. We discuss this in a model-independent form, but also at the simplest supersymmetry stealth scenario which can be realized in the next-to-minimal supersymmetric standard model.