Conveners
P10 - SUSY, SEESAW & GUTS
- Martin Hirsch (IFIC/CSIC)
Mr
Bryan Zaldívar
(IFT UAM/CSIC)
01/06/2011, 16:30
Usual analyses based on scans of the seesaw parameter-space can be biassed since they do not cover in a fair way the complete parameter-space. More precisely, we show that in the common 'R-parametrization', many acceptable R-matrices, compatible with the perturbativity of Yukawa couplings, are normally disregarded from the beginning, which produces biasses in the results. We give a...
Albert Villanova del Moral
01/06/2011, 16:45
Mr
Laslo Reichert
(Universidad de Valencia)
01/06/2011, 17:00
The talk is based on our recent paper arXiv:1101.2140. I will talk about supersymmetric mass spectra within two variants of the seesaw mechanism,commonly known as type-II and type-III seesaw. Using published, estimated errors on SUSY mass observables attainable
at the LHC and in a combined LHC+ILC analysis, we calculate expected errors for the parameters of the models, most notably the...
Carla Biggio
(IFAE)
01/06/2011, 17:15
In a SUSY SU(5) model extended with an SU(5) adjoint, two neutrino masses can be generated through a mixed type I+III seesaw mechanism. I will discuss the phenomenology of this model, paying particular attention to flavour violating processes and dark matter relic density.
Dr
Minoru Nagai
(TU Munich)
01/06/2011, 17:30
Supersymmetric (SUSY) Grand Unified theories (GUTs) generally predict FCNC and CP violating processes to occur both in the leptonic and hadronic sectors. Assuming an underlying SU(5) group plus right-handed neutrinos (RN), we perform an extensive study of FCNC and CP violation, analyzing the correlations between leptonic and hadronic processes like mu-> e gamma and K-Kbar mixing, tau->mu gamma...
Dr
Avelino Vicente
(Universität Würzburg)
01/06/2011, 17:45
The seesaw mechanism is the most popular explanation for the smallness of neutrino masses. However, its high scale makes impossible to test it directly and only indirect signals at low energies are reachable, lepton flavor violation in SUSY models being the best example. In this talk I will discuss lepton flavor violating signatures in the context of a SUSY left-right symmetric model that...
Mrs
ANA MARIA RODRIGUEZ SANCHEZ
(UAM)
01/06/2011, 18:00
I would like to present the work done in collaboration with S. Heinemeyer, M.J.Herrero and S.Peñaranda(hep-ph/0084861; already accepted by JHEP).
In this work we have done a full diagrammatic computation of the one-loop corrections from the neutrino/sneutrino sector to the lightest Higgs boson mass, M_h, within the context of the so-called MSSM-seesaw type I scenario, where three right...
Marek Olechowski
(University of Warsaw)
01/06/2011, 18:15
We investigate supersymmetric SO(10) GUT model with $\mu<0$.
The requirements of top-bottom-tau Yukawa unification,
correct radiative electroweak symmetry breaking and
agreement with the present experimental data may be
met when the soft masses of scalars and gauginos are
non-universal. We show how appropriate non-universalities
can easily be obtained in the SO(10) GUT broken to...
Michal Malinsky
(IFIC/CSIC and University of Valencia)
01/06/2011, 18:30
We review the classical argument that, in order to break the high-scale SO(10) gauge symmetry down to the SU(3)xSU(2)xU(1) of the Standard Model at the renormalizable level in the SUSY context, higher tensors such as 210 are needed. We argue that, with extra vector-like matter multiplets at play, the freedom to flip SO(10) offers an option to implement the desired symmetry breaking descent in...
Mr
Luca Di Luzio
(SISSA and INFN, Trieste)
01/06/2011, 18:45
It has been shown recently that the longstanding no-go excluding all the minimal nonsupersymmetric SO(10) unified scenarios where the first stage of the symmetry breaking is triggered by the 45-dimensional adjoint representation is confuted by the implementation of the one-loop effective potential. This observation reopens the possibility of a realistic and predictive unified model building...
