Benchmark scenario

In the minimal supersymmetrical extension of the Standard Model (MSSM) of particle physics, the benchmark scenario is understood to be the definition of all but two parameters in order to be able to determine, for example, the discovery potential of the Higgs particle .

background

The hypothetical supersymmetry is a broken symmetry, but the mechanism of symmetry breaking is unknown. To parameterize this ignorance, 105 parameters were introduced. In the MSSM, the number of parameters has been reduced to eight. But this number is still too large to be able to scan all possible combinations within the parameter space. For this reason the benchmark scenarios were introduced.

The first time benchmark scenarios were proposed for the LEP experiment was in 2002 . Almost the same scenarios are used for the Large Hadron Collider .

Suggested benchmark scenarios

• Mhmax (previously: maximum mixing scenario), maximum permitted region for : ${\displaystyle m_{h}}$ ${\displaystyle m_{h}<133\,\mathrm {GeV} }$
• Nomixing (no mixing in the stop sector)
• Gluophobic scenario (suppressed gluon-gluon fusion)
• Small (processes like suppressed) ${\displaystyle \alpha _{\mathrm {eff} }}$ ${\displaystyle ttH,H\rightarrow bb}$
• CPX ( CP-infringing scenario)