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IDM2008 - Identification of Dark Matter 2008
IDM2008 - Identification of Dark Matter 2008
18-22 August 2008 AlbaNova
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Dark matter annihilation signals -- the importance of radiative corrections (15'+5')
Being able to safely distinguish astrophysical from potential dark matter (DM)
annihilation signals is of utmost importance for indirect DM searches. For this, 
has in general to rely on distinctive -- and unique -- spectral signatures to look
for. In this talk, I point out that internal bremsstrahlung, which unavoidably
accompanies charged annihilation products, provides such a signature. In fact, it
often even dominates the gamma-ray spectrum expected from DM 
demonstrating that radiative corrections can significantly exceed naive 
for a large part of the WIMP parameter space internal bremsstrahlung, 
turns out to be more important for indirect DM searches than the traditionally
looked-for line signals. The gamma-ray contributions reported here may 
therefore be
of great importance for upcoming observatories like the soon to be launched 
sattellite or the new generation of Air Cherenkov Telescopes. I illustrate in some
detail the situation for neutralino DM in mSUGRA and the MSSM, but also briefly
mention other DM candidates such as the
lightest Kaluza-Klein particle appearing in models with universal extra 
Finally, I comment on the potential of using these signatures to distinguish 
different DM candidates and on the importance of radiative corrections for other
annihilation channels, in particular positrons.
Id: 372
Place: AlbaNova
Room: Oskar Klein auditorium
Starting date:
18-Aug-2008   14:45
Duration: 20'
Contribution type: Talk
Primary Authors: Dr. BRINGMANN, Torsten (SU Fysikum)
Presenters: Dr. BRINGMANN, Torsten
Material: slide Slides
Included in session: Indirect searches - gammas
Included in track: Indirect searches - gammas

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