Directly Deflecting Particle Dark Matter

Abstract

We propose a new strategy to directly detect light particle dark matter that has long-ranged interactions with ordinary matter. The approach involves distorting the local flow of dark matter with time-varying fields and measuring these distortions with shielded resonant detectors. We apply this idea to sub-MeV dark matter particles with very small electric charges or coupled to a light vector mediator, including the freezein parameter space targeted by low mass direct detection efforts. This approach can probe dark matter masses ranging from 10 MeV to below a meV, extending beyond the capabilities of existing and proposed direct detection experiments.

Neutrino millicharge and other electromagnetic interactions with COHERENT-2021 data

“…In addition, there are several extensions of the SM that predict new particles with fractional charges [5][6][7][8][9]. The fractionally charged particles are also promising candidates for dark matter [10][11][12][13][14][15]. Even charges of the SM particles can deviate from the integer multiple of 'e/3', where 'e' is the magnitude of unit electric charge.…”

A composite solution to the EDGES anomaly

“…Experiments such as SENSEI [30], DAMIC [31], super-CDMS [32], and even future proposals [33][34][35][36] are not sensitive to momentum transfers q ≤ Λ D ≈ meV. Instead, manipulation with electric and magnetic fields [37] is a promising detection strategy. For large enough blob charge, terrestrial accumulation and subsequent detection [38] might be a viable avenue.…”

Storage Rings and Gravitational Waves: Summary and Outlook

“…Employing the approach of searching for the GWs converting the pumped mode into the quiet mode via the IGE we expect, based on preliminary calculations, that the strain sensitivity should be on the order of h ∼ 10 −22 for a thermal noise-limited device operating at ω ∼ 100 MHz. The exact details of the computation will be found in a forthcoming publication [44].…”