Nina Smirnova
(LAPTh)
25/04/2017 10:00
Astroparticles
Multidimensional Simulations of Pair Instability Supernovae Explosions
Mlle
Amélie Chatelain
(APC)
25/04/2017 10:20
Astroparticles
In astrophysical environments such as core-collapse supernovae or binary neutron star mergers, the physical conditions are so extreme that neutrino propagation can have a significant role in the dynamics of the system, the nucleosynthesis, and modify the signals that might be detected from such events. Since the discovery of neutrino oscillations in 1998 and the assessment of the...
Mlle
Maíra Dutra
(Laboratoire de Physique Théorique d'Orsay)
25/04/2017 10:40
Astroparticles
Motivated by the absence of WIMP signal in the recent direct and indirect
detection searches, we consider a
scenario where the breaking of an abelian symmetry generates the
annihilation of hypercharge bosons into the
Nambu-Goldstone of the theory, the dark matter candidate.
The couplings are generated by loops of heavy fermions which masses are
also determined
by the scale of the $U(1)$...
M.
Ronan Ruffault
(LUPM)
25/04/2017 12:00
Astroparticles
The WIMP-paradigm tells us that a neutral particle with an EW cross-section and an electroweak-scale
mass roughly explains the observed relic abundance. However, a closer look reveals that this correspondance
is quantitatively not very precise since multi-TeV dark matter masses are reached for the simplest models, which is 1-2 orders of magnitude larger than the electroweak scale. But with...
M.
glenn robbins
(CRAL)
25/04/2017 12:20
Astroparticles
We explore the parameter space of the phenomenological MSSM in light of the constraints from dark matter density measurements, indirect and direct detection experiments, and the LHC. We emphasise in particular the impact of the astrophysical uncertainties and quantify their effects, and highlight the complementarity between the different constraints
M.
Yifan CHen
(LPTHE)
25/04/2017 12:40
Astroparticles
Motivated by the absence of signals of new physics in both searches for new particles at LHC and for a Weakly Interacting Massive Particle (WIMP) dark matter candidate, we consider a scenario where supersymmetry is broken at a scale above the reheating temperature. The low energy particle content consists then only in Standard Model states and a gravitino. We investigate the possibility that...
