Phenomenology 2022 Symposium: From Virtual to Real

Session

DM IV

10 May 2022, 16:30

Lawrence Hall 207

Conveners

DM IV

• Brooks Thomas (Colorado College)
• Brooks Thomas

31. A theory of dark pions

LINGFENG LI (Brown U.)

10/05/2022, 16:30

We present a complete model of a dark QCD sector with light dark pions, broadly motivated by hidden naturalness arguments. The dark quarks couple to the Standard Model via irrelevant $Z$- and Higgs-portal operators, which encode the low-energy effects of TeV-scale fermions interacting through Yukawa couplings with the Higgs field. The dark pions, depending on their $CP$ properties, behave as...

16. The Darkest Matters: Model-Independent Constraints on Dark Matter and Cosmic Neutrinos

Yu-Dai Tsai (University of California, Irvine)

10/05/2022, 16:45

In this talk, we use planetary and asteroid data to set new model-independent constraints on dark matter and cosmic neutrinos. See https://arxiv.org/abs/2107.04038 and https://arxiv.org/abs/2112.07674 for related previous works.

157. Sterile neutrino dark matter, self-interactions, and supernovae

Walter Tangarife (Loyola University Chicago)

10/05/2022, 17:00

In this talk, we explore the consequences of neutrino self-interactions for the production of sterile neutrino dark matter.  We present how neutrino self-interactions allow keV sterile neutrinos to make up all the dark matter while safely evading all current experimental bounds. In addition, we revisit and update the constraints that supernova neutrino observations impose on the mass scale and...

82. First Laboratory Bounds on Ultralight Dark Photon Dark Matter from Precision Atomic Spectroscopy

Dr Amit Bhoonah (Colorado State University)

10/05/2022, 17:30

Ultralight bosonic dark matter has come under increasing scrutiny as a dark matter candidate that can resolve numerous puzzles in astronomical observation. We demonstrate that high-precision measurements of time variation in the frequency ratios of atomic transitions achieves leading sensitivity to ultralight vector portal dark matter. These bounds are the first laboratory-based bounds on this...

191. Large N Composite Dark Matter through the Magnetic Dipole Interaction

Chester Mantel

10/05/2022, 17:45

Fermionic dark matter could arise from a strongly interacting dark sector. Dark quarks are bound into neutral composite dark baryons, which can be probed by direct detection experiments through a magnetic dipole interaction. We consider theories where the strong interaction consists of $N_c$ colors, where $N_c$ is odd and large, and place bounds on the parameter space of the theory using...

125. Polarized solitons in higher-spin dark matter

Mudit Jain

10/05/2022, 18:00

Apart from the Standard Model, our Universe could be host to a diverse set of degrees of freedom (dark sector). The dark sector could comprise of various bosonic fields with possible self interactions alongside gravity, containing macroscopic/astrophysical bound states known as solitons. Depending upon the spin nature of the field, these solitons can even carry huge amounts of intrinsic spin...

104. Cosmological Dark Photon Oscillations in Non-Minimal Dark Sectors

Mr Xucheng Gan (New York University)

10/05/2022, 18:15

As many of us know, the cosmic microwave background has a black-body spectrum. This is confirmed by COBE-FIRAS data three decades ago with exact measurement and tiny error bars.

However, the existence of new physics, such as the photon-dark photon oscillation with non-zero kinetic mixing, will distort the black body spectrum. Based on this character, and the fact that the deviation of CMB...