Research: Physics Beyond the Standard Model
The same physics underlies the phenomena which are being probed at
a forthcoming broad spectrum of experiments in particle and
astroparticle physics. Experiments at the Large Hadron Collider (LHC)
and searches for lepton flavour violation are complementary and
likely to produce in the coming years results of fundamental
importance. In addition, searches for neutrino-like Weakly
Interacting Massive Particles (WIMPs) which
are candidates for the Dark Matter of the Universe also
have very good potential.
Various other astroparticle physics experiments and
cosmological observations will also
provide further unique insights. This will
lead to a very interesting interplay which should allow to answer important
questions connected to the nature of electro-weak symmetry breaking,
to the origin of the generations and to the nature of Dark Matter.
There is also a good potential that completely new and unexpected
phenomena will be uncovered such that significant progress in the
understanding of physics beyond the Standard Model
can be expected.
The theoretical work of the division studies such questions in
general and also by including results from various experimental
This requires expertise in rather different fields in order to make
full use of all the knowledge being collected at rather
different frontiers. Interesting topics connected to Standard Model
extensions are, for example, electro-weak symmetry breaking,
supersymmetric and conformal extensions of the Standard Model,
Grand Unified Theories, extra dimensions,
lepton flavour violation, lepton number violation,
B+L violation, sterile neutrinos, left-right and/or
Dark Matter, Dark Energy, neutrino masses
and mixings as well as baryogenesis.
The theoretical work of the division also guides the experimental
efforts and it provides direct support for their analysis
Figure: Particles of the Standard Model.
The origin of three generations of fermions (I,II,III)
is not understood. Theoretical arguments and experimental
observations require extensions.