Production of non-linear SUSY Higgs bosons at e+e− colliders

Abstract

We investigate the Higgs sector of a nonlinear supersymmetric standard model at LEP 1 and LEP 2, as well as at future linear e + e − colliders with √ s = 500, 1000, and 2000 GeV. The LEP 1 data do not put any constraints on the parameters of the model, and allow a massless Higgs boson in particular. For LEP 2, there are remarkable differences between the Higgs productions at √ s = 175 GeV on the one hand and that at √ s = 192 GeV and 205 GeV on the other hand. The case for √ s = 175 GeV is similar to LEP 1, whereas those for √ s = 192 GeV and 205 GeV will be able to give experimental constraints on the parameters. Finally the e + e − colliders with √ s = 500, 1000, and 2000 GeV are most probably able to test the model conclusively.

The Next-to-Minimal Supersymmetric Standard Model

“…3. Clearly, even very light CP-even scalars are not ruled out if ξ 1 is sufficiently small, and such scenarios can indeed be realised within the NMSSM [113,114,127,175,[192][193][194][195][196][197][198][199].…”

“…Early studies [113,127,[193][194][195][196] confined themselves to the standard Higgs search channels…”

Physics at the e+ e- Linear Collider

“…Also if hints for such an extended Higgs sector are observed at the LHC, only a LC will be able to study its properties in more detail. Earlier studies of the detection of NMSSM Higgs bosons at e + e − colliders can be found in [428][429][430][431][432][433].…”

Experimental constraints on the parameter space of the next-to-minimal supersymmetric standard model at LEP 2

“…1b. The discovery limits in the model are about 50 fb for m S = 80 GeV and 30 fb for m S = 40 GeV at a luminosity of 500 pb −1 for √ s = 175 GeV and at one of 300 pb −1 for √ s = 192 and 205 GeV [12]. We cannot impose any experimental constraints on tan β at √ s = 175 GeV.…”