Ref Arxiv: 0
Résumé:

We study the fine tuning in the parameter space of the semi-constrained NMSSM, where most soft Susy breaking parameters are universal at the GUT scale. We discuss the dependence of the fine tuning on the soft Susy breaking parameters $M_{1/2}$ and $m_0$, and on the Higgs masses in NMSSM specific scenarios involving large singlet-doublet Higgs mixing or dominant Higgs-to-Higgs decays. Whereas these latter scenarios allow a priori for considerably less fine tuning than the constrained MSSM, the early LHC results rule out a large part of the parameter space of the semi-constrained NMSSM corresponding to low values of the fine tuning.

Ref HAL: hal-00425545_v1
Ref Arxiv: 0910.1785
DOI: 10.1016/j.physrep.2010.07.001
Ref. & Cit.: NASA ADS
Exporter : BibTex | endNote
679 citations
Résumé:

We review the theoretical and phenomenological aspects of the Next-to-Minimal Supersymmetric Standard Model: the Higgs sector including radiative corrections and the 2-loop beta-functions for all parameters of the general NMSSM; the tadpole and domain wall problems, baryogenesis; NMSSM phenomenology at colliders, B physics and dark matter; specific scenarios as the constrained NMSSM, Gauge Mediated Supersymmetry Breaking, U(1)'-extensions, CP and R-parity violation.

Commentaires: 142 pages, 11 figures

Ref HAL: hal-00350967_v1
Ref Arxiv: 0811.3224
DOI: 10.1088/1475-7516/2009/01/023
Ref. & Cit.: NASA ADS
Exporter : BibTex | endNote
15 citations
Résumé:

We reexamine the constrained version of the Next-to-Minimal Supersymmetric Standard Model with semi universal parameters at the GUT scale (CNMSSM). We include constraints from collider searches for Higgs and SUSY particles, upper bound on the relic density of dark matter, measurements of the muon anomalous magnetic moment and of B-physics observables as well as direct searches for dark matter. We then study the prospects for direct detection of dark matter in large scale detectors and comment on the prospects for discovery of heavy Higgs states at the LHC.

Commentaires: 22 pages, 8 figures. Note added and references added

Ref HAL: hal-00335450_v1
Ref Arxiv: 0810.4736
DOI: 10.1088/1126-6708/2009/01/061
Ref. & Cit.: NASA ADS
Exporter : BibTex | endNote
49 citations
Résumé:

We study possible effects of a light CP-odd Higgs boson on radiative Gamma decays in the Next-to-Minimal Supersymmetric Standard Model. Recent constraints from CLEO on radiative Gamma(1S) decays are translated into constraints on the parameter space of CP-odd Higgs boson masses and couplings, and compared to constraints from B physics and the muon anomalous magnetic moment. Possible Higgs-eta(b)(nS) mixing effects are discussed, notably in the light of the recent measurement of the eta(b)(1S) mass by Babar: The somewhat large Gamma(IS) - eta(b)(1S) hyperfine splitting could easily be explained by the presence of a CP-odd Higgs boson with a mass in the range 9.4 - 10.5 GeV. Then, tests of lepton universality in inclusive radiative Gamma decays can provide a visible signal in forthcoming experimental data.

Ref HAL: hal-00288519_v1
Exporter : BibTex | endNote
Résumé:

I will present the latest developments in the codes of the NMSSMTools package, especially the possibility of fixing GMSB type constraints on the free parameters. I show the complementarity of dark matter vs. colliders constraints and will give a list of benchmark points to look for at the LHC.

Ref HAL: hal-00288518_v1
Exporter : BibTex | endNote
Résumé:

I will present the latest developments in the codes of the NMSSMTools package. I will show the effect of the different experimental constraints on the parameter space, including the dark matter constraints from WMAP and will give a list of benchmark points to look for at the LHC.

Ref HAL: hal-00258621_v1
Ref Arxiv: 0801.0045
DOI: 10.1016/j.cpc.2008.08.004
Ref. & Cit.: NASA ADS
Exporter : BibTex | endNote
263 citations
Résumé:

The Supersymmetry Les Houches Accord (SLHA) provides a universal set of conventions for conveying spectral and decay information for supersymmetry analysis problems in high energy physics. Here, we propose extensions of the conventions of the first SLHA to include various generalisations: the minimal supersymmetric standard model with violation of CP, R-parity, and flavour, as well as the simplest next-to-minimal model.

Commentaires: 35 pages