Rencontres de Physique des Particules 2017

Session

Astroparticles and Cosmology

25 avr. 2017, 09:30

Amphithéatre (Centre de Physique des Particules de Marseille)

28. Cosmology update

Federico Piazza

25/04/2017 09:30

18. Multidimensional Simulations of Pair Instability Supernovae Explosions

Nina Smirnova (LAPTh)

25/04/2017 10:00

Astroparticles

Multidimensional Simulations of Pair Instability Supernovae Explosions

0. Helicity coherence in binary neutron star mergers and nonlinear feedback

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...

27. When unification freezes dark matter

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 $U(1)$...

19. Dark Matter

Dr ANDREAS GOUDELIS (LPTHE - Paris)

25/04/2017 11:25

4. Well-tempered n-plet dark matter

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...

11. Dark matter constraints and uncertainties in the pMSSM

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

14. A Minimal Model of Gravitino Dark Matter

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...