IRN Terascale @ IJCLab Orsay

Session

Dark Universe

22 avr. 2026, 09:15

Auditorium Pierre Lehmann (IJCLab)

17. Light Dark Matter Search in XENONnT Experiment

Yongyu PAN

22/04/2026 09:15

Dark Universe

The XENONnT experiment, located at the INFN Laboratori Nazionali del Gran Sasso, is a multi-tonne dual-phase xenon time projection chamber designed primarily for the direct detection of WIMPs. While standard searches require both scintillation (S1) and ionization (S2) signals, an ionization-only (S2-only) analysis significantly lowers the energy threshold, extending sensitivity to sub-GeV dark...

20. TESSERACT: status and progress towards sub-GeV dark matter detection

Valentina Novati (CNRS-LPSC)

22/04/2026 09:40

Dark Universe

The TESSERACT experiment will search for sub-GeV dark matter using multiple complementary, ultra-sensitive cryogenic calorimeters, sensitive to nuclear-, electron-, and dark photon–type interactions. Three detector technologies will be operated: superfluid helium, polar crystals (GaAs and sapphire), and semiconductor crystals (germanium and silicon). These detectors will employ Transition Edge...

22. Strongly tunable YIG gyromagnetic modes for dark matter search

Jeanne Bally (ENS)

22/04/2026 10:05

Dark Universe

We propose a paradigm for quantum enhanced axion dark matter search, which does not rely on power measurements. We propose to measure directly the axion amplitude and phase in an interferometric protocol at the quantum limit, using a non-linear cavity. In addition, we introduce gyromagnetic modes as wide mass range transducers for axion signals compatible with standard haloscope designs. We...

18. Indirect searches for sub-GeV Dark Matter models in present and upcoming observations

Dr Arpan Kar (LPTHE, Sorbonne University, Paris)

22/04/2026 10:50

Dark Universe

Indirect searches for Dark Matter (DM) particles with mass in the MeV - GeV scale have received significant attention lately. Pair-annihilations of such DM particles in the Galaxy can give rise to MeV - GeV gamma-rays via prompt emission, sub-GeV e+e-'s in cosmic-rays, as well as a broad photon spectrum ranging from X-rays to soft gamma-rays, produced by the secondary emissions from DM induced...

9. Terascale physics from evaporating black holes and morsels

Dr Giacomo Cacciapaglia (LPTHE)

22/04/2026 11:15

Dark Universe

Hawking radiation from evaporating Black Holes (BHs) can reach the terascale within an observable time frame. This opens the door for potential observation of new physics at the multi-TeV scale, such as supersymmetry and composite dynamics. The observation of Hawking radiation requires the presence of BHs lighter than the typical astrophysical ones. I will discuss how the hypothetical...

16. Constraining SU(2) WIMP dark matter with H.E.S.S. observations of the Milky Way

Dr Alessandro Montanari (Laboratoire Leprince-Ringuet, Ecole Polytechnique)

22/04/2026 11:40

Dark Universe

Indirect detection methods offer a unique way to probe thermal dark matter (DM). Particles at TeV scale, weakly coupled to the Standard Model, face undoubted challenges from decades of null searches; nevertheless the scenario remains compelling, and simple realizations such as Higgsino DM remain largely unexplored. Such scenarios could be finally constrained with gamma-ray observations of the...