Speaker
Dr
Elena Perez del Rio
(LNF-INFN)
Description
During the last years several Dark Sector Models have been proposed in order
to address striking and pluzzing astrophysical observations which fail standard
interpretations.
In the minimal case a new vector particle, the so called dark photon or U-boson,
is introduced, with small coupling with Standard Model particles. Also, the existence of a dark Higgs boson h’ is postulated, in analogy with the Standard
Model, to give mass to the U-boson through the Spontaneous Symmetry Breaking mechanism. The discovery of such a Dark Force Mediator would belong to
a new field of Physics Beyond the Standard Model.
The KLOE experiment, working on the DAΦNE e+e- collider in Frascati, searched
for the existence of the U-boson in a quite complete way, investigating several
different processes and final states. Tight limits on the model parameters have
been set at 90%CL. Further improvements are expected in terms of sensitivity
and discovery potential with the new KLOE-2 detector working on the improved
DAFNE e+e- collider, which has collected more than 5 fb−1.
Primary author
Dr
Elena Perez del Rio
(LNF-INFN)
