Speaker
Dr
Jan Olzem
(I. Physikalisches Institut B, RWTH Aachen)
Description
A recent analysis of cosmic ray data from a space borne experiment by the AMS
collaboration confirms the excess in the cosmic ray positron spectrum observed by
previous balloon experiments. The combination of the various experimental data
establishes a deviation from the expected background with a significance of more than
four standard deviations. The observed change in the spectral index cannot be
explained without introducing a new source of positrons. If interpreted within the
MSSM a consistent description of the antiproton spectrum, the diffuse gamma-ray flux
and the positron fraction is obtained which is compatible with all other experimental
data, including recent WMAP data. Constraints in the tan beta - M(neutralino) plane
will be presented. Perspectives to observe the expected SUSY signatures at LHC, at
direct detection experiments like XENON and at indirect detection experiments like
PAMELA, AMS or PEBS will be discussed.
Authors
Mr
Chanhoon Chung
(I. Physikalisches Institut B, RWTH Aachen)
Mr
Henning Gast
(I. Physikalisches Institut B, RWTH Aachen)
Dr
Jan Olzem
(I. Physikalisches Institut B, RWTH Aachen)
Prof.
Stefan Schael
(I. Physikalisches Institut B, RWTH Aachen)
