4th EuCAPT Annual Symposium

Session

Dark Matter

15 May 2024, 14:00

500/1-001 - Main Auditorium (CERN)

Conveners

Dark Matter

• Diego Blas (UAB/IFAE)

Dark Matter

• Diego Blas (UAB/IFAE)

139. Line Intensity Mapping for new physics

Dr Jose Luis Bernal (Institute of Physics of Cantabria, Spain)

15/05/2024, 14:00

140. 21 cm and CMB as dark matter probes

Gaëtan Facchinetti

15/05/2024, 14:30

141. The dark shines - Highlights of gamma-ray searches for dark matter

Christopher Eckner (University of Nova Gorica)

15/05/2024, 15:45

6. X-rays constraints on sub-GeV Dark Matter

Jordan Koechler (LPTHE - Sorbonne Université (France))

15/05/2024, 16:17

dark matter

We present updated constraints on 'light' Dark Matter (DM) particles with masses between 1 MeV and 5 GeV. In this range, we can expect DM-produced pairs to upscatter low-energy ambient photons in the Milky Way via the Inverse Compton process, and produce a flux of X-rays that can be probed by a range of space observatories. Using diffuse X-ray data from XMM-Newton and realistic cosmic-ray...

12. Riding the dark matter wave: Novel limits on general dark photons from LISA Pathfinder

Jonas Frerick

15/05/2024, 16:24

dark matter

I will point out the possibility to perform a parametrically improved search for gauged baryon ($B$) and baryon minus lepton ($B-L$) Dark Photon Dark Matter (DPDM) using auxiliary channel data from LISA Pathfinder. In particular I will show how to use the measurement of the differential movement between the test masses (TMs) and the space craft (SC) which is nearly as sensitive as the tracking...

30. Global Fits of sub-GeV Dark Matter

Taylor Gray (Chalmers University of Technology)

15/05/2024, 16:31

dark matter

Sub-GeV dark matter (DM) has been gaining significant interest in recent years, since it can account for the thermal relic abundance while evading nuclear recoil direct detection constraints. However, sub-GeV DM is still subject to a number of constraints from laboratory experiments, and from astrophysical and cosmological observations. In this work, we compare these observations with the...

60. Burst Signals from Axion String Travelling Wave Collisions

Amelia Drew

15/05/2024, 16:38

dark matter

Axion strings are a type of topological defect that arise in particle physics models with a spontaneously broken global U(1) symmetry. They are predicted to radiate massless dark matter axions, massive particles and gravitational waves. If we are to detect axion dark matter, either directly or indirectly via gravitational waves, understanding the magnitude and spectrum of this radiation is...

91. Dynamical contraints on PBH clusters

Francesca Scarcella (Laboratoire Univers et Particules de Montpellier (LUPM))

15/05/2024, 16:45

dark matter

In the high mass range, primordial black holes are constrained by the observed velocity dispersion of the Galactic disk, as they are expected to heat up stars through two-body encounters. These constraints have been obtained assuming that the PBHs are smoothly distributed in the DM halo. However, PBHs are expected to form bound structures under the effect of gravity; furthermore, it has been...

61. EFT approach to sterile neutrino dark matter

Stefan Sandner (IFIC)

15/05/2024, 16:52

dark matter

Sterile neutrinos represent a minimal and well motivated extension of the Standard Model (SM). For masses at the keV scale, their mixing to the active neutrinos offers a minimal explanation of the dark matter (DM) density. The very same mixing inevitably leads to radiative photon emission and the non-observation of such peaked X-ray lines virtually rules out this minimal sterile neutrino DM...