Conveners
P4 - SUPERSYMMETRY
- Stephane Lavignac
Mr
James Barnard
(Durham University)
31/05/2011, 16:45
Flat directions in the MSSM have long been used to generate a large baryon number asymmetry via the Affleck-Dine mechanism. In a complete theory that includes SUSY breaking it is unlikely they are alone. Renormalisable O'Raifeartaigh models also possess flat directions that can carry R-charge. I will discuss the cosmological consequences of these fields and the possible formation of large,...
Pantelis Tziveloglou
(Ecole Polytechnique)
31/05/2011, 17:00
Low energy (multi-TeV) supersymmetry breaking is an interesting possibility since it alleviates the little hierarchy problem in a natural and minimal way. This scenario generally predicts an almost massless gravitino whose dynamics are effectively described by its goldstino component. Focusing on the Minimal Supersymmetric Standard Model, the corresponding effective theory would be that of...
Antonio Delgado
(University of Notre Dame)
31/05/2011, 17:15
The NMSSM is embedded into gauge mediation adding direct couplings between the singlet, the higgs and the messenger. In this way sizable contributions to trilinear couplings are generated and a viable spectrum with sparticles at the TeV scale or below is generated.
Mr
Duccio Pappadopulo
(EPFL)
31/05/2011, 17:30
The unavoidable tuning among supersymmetric parameters required to raise the Higgs boson mass beyond its experimental limit opens up new avenues for dealing with the so called $\mu$-$B_\mu$ problem of gauge mediation. In fact, it allows for accommodating, with no further parameter tuning, large values of $B_\mu$ and of the other Higgs-sector soft masses, as predicted in models where both $\mu$...
Dr
Antonio Racioppi
(NICPB)
31/05/2011, 17:45
We study a supersymmetry breaking mechanism in the context of a minimal anomalous extension of the MSSM (arXiv:1102.5040). The anomaly cancellation mechanism is achieved through the Green-Schwarz mechanism. We assume that the standard MSSM superpotential is perturbatively realized, except for the $\mu$-term which has a non-perturbative origin. The presence of this term is expected in many...
Ms
Claudia Frugiuele
(Carleton University)
31/05/2011, 18:00
I will talk about a new R symmetric SUSY model where the R symmetry is identified with one of the lepton number, and as consequence the sneutrino plays the role of the down type Higgs.
This is possible as the sneutrino does not carry any lepton number, and therefore the sneutrino VEV is not constrained by the usual tight bounds from the neutrino mass.
On the other hand, all the other SUSY...
Aleksandr Azatov
(University Of Rome "La Sapienza" and INFN sezione di Roma)
31/05/2011, 18:15
I will discuss a simple complete solution to both $\mu$ and the little hierarchy problems of the MSSM. This solution is achieved by combining MSSM with its two well known extensions. On the one side next-to-MSSM(NMSSM) can solve $\mu$ problem of the MSSM, but it is generically difficult to attain a tachyonic singlet required for this purpose, also addition of the singlet cannot increase...
Das Debottam
31/05/2011, 18:45
