Dark Interactions 2022

Session

Session IV

14 Nov 2022, 17:00

Online

Conveners

Session IV

• Robert Szafron (Brookhaven National Laboratory)

Session IV

• Matheus Hostert (Perimeter Institute)

32. Mechanical quantum sensing for dark matter: heavy, light, and ultra-light

Daniel Carney (Berkeley National Lab)

14/11/2022, 17:00

24. New Constraints on the Profiles and Masses of Dark Matter and Cosmic Neutrinos through Precision Astrometry and Quantum Sensors

Yu-Dai Tsai (University of California, Irvine)

14/11/2022, 17:30

We derive purely gravitational constraints on dark matter and cosmic neutrino profiles in the solar system using asteroid (101955) Bennu. We focus on Bennu because of its extensive tracking data and high-fidelity trajectory modeling resulting from the OSIRIS-REx mission. We find that the local density of dark matter is bound by $\rho_{\rm DM} < 3.3\times 10^{-15}\;\rm kg/m^3 \simeq...

29. Stepped Dark Sectors and Cosmological Tensions

Melissa Joseph

14/11/2022, 17:45

Models of dark sectors with a mass threshold can have important cosmological signatures. If, in the era prior to recombination, a relativistic species becomes non-relativistic and is then depopulated in equilibrium, there can be measurable impacts on the CMB as the entropy is transferred to lighter relativistic particles. In particular, if this "step'" occurs near z = 20,000, the model can...

39. Do dark matter and neutrinos talk to each other?

Carlos A. Argüelles-Delgado (Harvard University)

16/11/2022, 16:50

In this presentation, I will review the current status of searches for connections between dark matter and neutrinos. Neutrinos can be a gateway to the dark sector as, e.g., they allow for the tree-level decay or annihilation of dark matter into neutrinos. I will describe the constraints on dark matter annihilation, decay, and scattering to neutrinos. Finally, I will provide an outlook for...

12. Neutrinos from the Sun as a discovery tool for dark matter - electron scattering

Tarak Nath Maity (Indian Institute of Science)

16/11/2022, 17:20

We will discuss a novel strategy to search for dark matter (DM)-electron scattering. DM interacting with electrons may get captured inside the Sun. These captured DM may annihilate to produce different Standard Models (SM) particles. Neutrinos produced from these SM states can be observed in IceCube and DeepCore. Although there is no excess of neutrinos from the Solar direction, we find that...

27. Non-standard neutrino interactions in light mediator models at reactor experiments

Ankur Verma

16/11/2022, 17:35

Compared to other neutrino sources, the huge anti-neutrino fluxes at nuclear reactor based experiments empower us to derive stronger bounds on non-standard interactions of neutrinos with electrons mediated by light scalar/vector mediators. At neutrino energy around $200$~keV reactor anti-neutrino flux is at least an order of magnitude larger compared to the solar flux. The atomic and crystal...