Mr
Matti Antola
(University of Helsinki, HIP)
26/08/2010, 16:12
Model
Our recent proposal for an approximately N=4 supersymmetric extension of the MSSM will be reviewed. Depending on the soft supersymmetry breaking parameters and the size of the technicolor coupling, the electroweak scale is stablized either by supersymmetry or by nonperturbative technicolor dynamics. Within the model one can naturally interpolate between the MSSM, bosonic technicolor extensions...
Dr
Stefano Di Chiara
(CP3-Origins, Southern Denmark University)
26/08/2010, 16:29
Model
We study the Minimal Super Conformal Technicolor (MSCT) in the perturbative regime and show that breaking electroweak symmetry solely by Higgs mechanism does not allow MSCT to satisfy the experimental constraints while retaining perturbativity at the LHC scale. We conclude that a dynamical contribution to electroweak symmetry breaking is necessary for the model to be possibly viable at the LHC.
Mr
Javi Serra
(Universitat Autònoma de Barcelona)
26/08/2010, 16:46
Model
The composite Higgs mechanism is a very well motivated scenario for electroweak symmetry breaking. The Higgs boson emerges as a (massless) Nambu-Goldstone boson (NGB) from a spontaneous global symmetry breaking in a strongly interacting sector living at the TeV scale, providing an elegant solution to the hierarchy problem. After a brief review on how the minimal version of this scenario, based...
Dr
Johan Rathsman
(Uppsala University)
26/08/2010, 17:03
Model
We present a two-Higgs doublet model where only one of the doublets gets a vacuum expectation value
and there is a softly broken Z2 symmetry. In this "hidden doublet model", the CP-even states h and H mix,
and therefore they both couple to fermions, whereas the hidden states A0 and H+ only couple to fermions
via gauge boson-Higgs loops and thus these couplings are strongly suppressed. Our...
Ms
Marja Hanussek
(Uni Bonn)
26/08/2010, 17:20
Model
We consider the embedding of the supersymmetric Standard Model with broken R-parity in the minimal supergravity model. We restrict ourselves to the case of broken lepton number, the B3 mSUGRA model. We find in particular a strong dependence on the trilinear supersymmetry breaking A-parameter, even in the vicinity of the mSUGRA SPS1a point. We then reinvestigate the bounds on the trilinear...
Mr
Yuta Orikasa
(SOKENDAI, KEK)
26/08/2010, 17:37
Model
Under a hypothesis of classically conformal theories, we investigate the minimal B-L extended Standard Model, which naturally provides the seesaw mechanism for explaining tiny neutrino masses. In this setup, electroweak symmetry breaking is triggered by radiative B-L symmetry breaking.
The model naturally predicts TeV scale B-L breaking as well as a light standard-model singlet Higgs boson...