Conveners
Dark Matter
- Michel Tytgat (Université Libre de Bruxelles)
Dark Matter
- Michel Tytgat (Université Libre de Bruxelles)
Charlotte Hellmann
(TU Munich)
28/05/2014, 14:30
SuSy and other BSM phenomenology
Parallel Session talk
We discuss the impact of Sommerfeld enhancements on the neutralino LSP relic abundance calculation for heavy neutralino dark matter including co-annihilations of nearly mass-degenerate neutralino and chargino states. Interesting regions in the MSSM parameter space are identified, focusing on heavy wino- and higgsino-like dark matter scenarios and models interpolating between the two cases. We...
Dr
Yong Tang
(KIAS, Seoul)
28/05/2014, 14:50
SuSy and other BSM phenomenology
Parallel Session talk
We construct a self-interacting scalar dark matter (DM) model with local discrete Z3 symmetry that stabilizes a weak scale scalar dark matter X. The model assumes a hidden sector with a local U(1)X dark gauge symmetry, which is broken spontaneously into Z3 subgroup by nonzero VEV of dark Higgs field ϕX (⟨ϕX⟩≠0). Compared with global Z3 DM models, the local Z3 model has two new extra fields: a...
Dr
Julia Harz
(University College London)
28/05/2014, 15:10
SuSy and other BSM phenomenology
Parallel Session talk
After the discovery of a 125 GeV Higgs boson, light stop scenarios are strongly motivated. With currently having only weak constraints from the LHC for almost degenerate neutralino and stop masses, supersymmetry could still hide in this corner.
In this region of the MSSM parameter space, neutralino-stop coannihilation can also play an important role in order to meet the experimentally...
Paolo Panci
(Institute d'Astrophysique de Paris (IAP))
28/05/2014, 15:30
Cosmology and Astroparticles
Parallel Session talk
Direct searches for Dark Matter (DM) aim at detecting the nuclear recoils arising from a scattering between DM particles and target nuclei in underground detectors. Since the physics that describes the collision between DM particles and target nuclei is deeply non-relativistic, in this presentation I’ll review a different and more general approach to study signal in direct DM searches based on...
Andrea Vittino
(Universita' di Torino and IPhT/CEA Saclay)
28/05/2014, 15:50
Cosmology and Astroparticles
Parallel Session talk
Light anti-nuclei, namely anti-deuteron and anti-helium, can be produced through the nuclear coalescence of the anti-protons and the anti-neutrons that are originated in a dark matter pair annihilation event. At low kinetic energies, the fluxes of these bound states are found to dominate over the astrophysical background and thus anti-nuclei may be considered as a very promising channel for a...
Bryan Zaldívar
(ULB, Brussels)
28/05/2014, 16:40
Cosmology and Astroparticles
Parallel Session talk
In this talk I plan to discuss how different searches at the LHC concerning dark matter can complement, and in some cases substantially reduce, the still available parameter space of WIMP's direct detection, with special focus on BSM models with extra gauged U(1).
Nicolás Bernal
28/05/2014, 17:00
Cosmology and Astroparticles
Parallel Session talk
We study the impact of aspherical dark matter density distribution in Milky-Way like halo on direct and indirect searches. Using data from large N-body cosmological simulation Bolshoi, we perform a complete statistical analysis and quantify the systematic uncertainties that affect the determination of local dark matter density and J factors for annihilating and decaying dark matter. We find...
Chaehyun Yu
(KIAS)
28/05/2014, 17:20
Higgs Physics
Parallel Session talk
In the 2HDMs, an ad hoc Z_2 symmetry is typically imposed in order to avoid
the flavor problems. We propose to introduce local U(1) Higgs flavor symmetry,
that distinguishes one Higgs doublet from the other. Then the U(1) gauge symmetry
could be the origin of the Z_2 symmetry. We study phenomenology of this model by taking into account
various theoretical and experimental constraints....
Enrico Maria Sessolo
(NCBJ, Warsaw)
28/05/2014, 17:40
SuSy and other BSM phenomenology
Parallel Session talk
We examine the issue of fine tuning in the MSSM with GUT-scale boundary conditions. We focus on a phenomenologically interesting region that is favored by the Higgs mass measurement and the relic density, where the dark matter is a nearly pure higgsino with mass ~1 TeV, while the scalars and gauginos have masses in the multi-TeV regime.
We identify specific unification patterns that can lead...
