The 4th UniverseNet School - Frontiers of Particle Cosmology

Session

6 talks (Chair: Bohdan GRZADKOWSKI)

13 Sept 2010, 16:30

Lecce, Università del Salento

9. Mr. ALBORNOZ, Daniel (LAPTH Annecy): Lightest neutralinos in the (N)MSSM

13/09/2010, 16:30

Recently direct detection experiments claim Dark Matter like events. If they were caused by WIMPs indeed, then they point towards rather light (a few to 50 GeV, depending on experiments) Dark Matter particles. We review the plausibility of light neutralinos with relatively large elastic scattering cross sections in the Minimal and Next-to-Minimal Supersymmetric Standard Models (MSSM &...

10. Dr. FRANDSEN, Mads Toudal (University of Oxford): Asymmetric dark matter

13/09/2010, 16:45

Cold dark matter particles with an intrinsic matter-antimatter asymmetry do not annihilate after gravitational capture by the Sun and can aect its interior structure. The rate of capture is exponentially enhanced when such particles have self-interactions of the right order to explain structure formation on galactic scales. A `dark baryon' of mass 5 GeV is a natural candidate and has the...

11. Mr. MCCABE, Christopher (University of Oxford): Neutrino-Flavoured Sneutrino Dark Matter

13/09/2010, 17:00

A simple theory of supersymmetric dark matter (DM) naturally linked to neutrino flavour physics is studied. The DM sector comprises a spectrum of mixed lhd- rhd sneutrino states where both the sneutrino flavour structure and mass splittings are determined by the associated neutrino masses and mixings.

12. Mr. PATO, Miguel (Padova University): Systematic uncertainties in the determination of the local dark matter density

13/09/2010, 17:15

We quantify systematic uncertainties associated with the determination of the local dark matter density from dynamical measurements in our Galaxy. Using very recent high-resolution numerical simulations of Milky Way like galaxies, we study the effect of baryonic physics on dark matter halos and how this can bias the inference of the dark matter density in our neighbourhood. Such piece of...

13. Dr. RACIOPPI, Antonio (NICPB Tallin): Matter parity, scalar dark matter and LHC

13/09/2010, 17:30

We extend the concept of matter parity P_M=(-1)^{3(B-L)} to non-supersymmetric theories and argue that P_M is the natural explanation to the existence of Dark Matter (DM) of the Universe. If the underlying Grand Unified Theory gauge group is SO(10), then non-supersymmetric scalar DM must be contained in a scalar 16 representation and the unique low energy DM candidates are a P_M-odd complex...

14. Mr. URBANO, Alfredo (Salento University): Electroweak corrections to Dark Matter indirect detection

13/09/2010, 17:45

Considering Dark Matter (DM) annihilations and decays into Standard Model particles, we study in a model independent way the role of electroweak radiative corrections. Since electroweak interactions link all SM particles, in fact, all stable ones (including antiprotons and independently from the primary particle initially considered) will be present in the final spectrum. Results show very...