Mr
Min-Seok Seo
(Seoul National University)
26/08/2010, 14:00
Model
The discrete symmetry D_12 at the electroweak scale is used to fix the quark and lepton mixing angles. At the leading order, the Cabbibo angle theta_C is 15^o, and the PMNS matrix is of a bi-dodeca-mixing form giving the Solar-neutrino angle theta_sol=30^o. Thus, there results the relation theta_sol+theta_C ~ 45^o. Out of discrete vacua, a certain vacuum is chosen for this assignment to be...
Mr
Andreas Crivellin
(TTP Karlsruhe)
26/08/2010, 14:17
Model
Recent experimental results such as the D0 measurement of the dimuon
asymmetry in B_s decays hint at a flavor structure beyond that of the
standard CKM mechanism. This development puts the supersymmetric flavor
problem back on the agenda. I discuss an alternative to the widely studied
minimally flavor violating MSSM, which cannot explain a large CP phase in
B_s mixing: The smallness...
Ms
Carolin Barbara Braeuninger
(Technische Universitaet Muenchen & Max-Planck-Institut fuer Physik)
26/08/2010, 14:34
Model
The most general two Higgs doublet model contains new sources of flavour violation that are usually in conflict with the experimental constraints. One possibility to suppress the exotic contribution to the flavour changing neutral currents consists on imposing the alignment of the Yukawa couplings. This condition presumably holds at a high-energy scale and is spoiled by the radiative...
Dr
Johannes Heinonen
(University of Chicago)
26/08/2010, 14:51
Model
I will present recent work on the flavor structure in Universal Extra Dimensions (UED) with KK-parity. Specifically I will show how to construct a realistic model of fermion mass hierachies using loaclization of the wave functions in the extra dimesion. I will estimate the flavor bounds due to FCNCs and show that a lowering of the flavor scale requires mimicking a RS model with a double...
Dr
Christoph Luhn
(University of Southampton)
26/08/2010, 15:08
Model
Ever since Harrison, Perkins and Scott suggested that the neutrino mixing data could be approximated by the tri-bimaximal mixing matrix, there have been many proposals to explain its structure in terms of a discrete family symmetry. In this talk we discuss two classes of models - direct and indirect - which realise the effective neutrino flavour symmetry in different ways. We illustrate both...
Dr
Andrea Brignole
(INFN-Padova)
26/08/2010, 15:25
Model
We present a supersymmetric scenario in which neutrino masses
are effectively generated by Kahler operators, rather than by the usual
d=5 superpotential operator.
We also describe explicit realizations of such effective operators and
discuss the case in which the heavy seesaw mediators are also
messengers of SUSY breaking.
