A closer look at CP-violating Higgs portal dark matter as a candidate for the GCE

@article{Fraser2020ACL,
  title={A closer look at CP-violating Higgs portal dark matter as a candidate for the GCE},
  author={Katherine Fraser and Aditya Parikh and Weishuang Linda Xu},
  journal={Journal of High Energy Physics},
  year={2020},
  volume={2021}
}
A statistically significant excess of gamma rays has been reported and robustly confirmed in the Galactic Center over the past decade. Large local dark matter densities suggest that this Galactic Center Excess (GCE) may be attributable to new physics, and indeed it has been shown that this signal is well-modelled by annihilations dominantly into bb¯\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage… 

Bound states of WIMP dark matter in Higgs-portal models II: thermal decoupling

The Higgs doublet can mediate a long-range interaction between multi-TeV particles coupled to the Weak interactions of the Standard Model, while its emission can lead to very rapid bound-state

Bound states of WIMP dark matter in Higgs-portal models. Part I. Cross-sections and transition rates

We investigate the role of the Higgs doublet in the thermal decoupling of multi-TeV dark matter coupled to the Weak interactions of the Standard Model and the Higgs. The Higgs doublet can mediate a

Electroweak dark matter model accounting for the CDF W -mass anomaly

Recently, the CDF collaboration reported a new measurement of the W boson mass M W = 80 . 4335 ± 0 . 0094 GeV, which shows a ∼ 7 σ deviation from the standard model prediction 80 . 3545 ± 0 . 0057

Oblique Lessons from the $W$ Mass Measurement at CDF II

The CDF collaboration recently reported a new precise measurement of the W boson mass M W with a central value significantly larger than the SM prediction. We explore the effects of including this new

Snowmass2021 Cosmic Frontier White Paper: Puzzling Excesses in Dark Matter Searches and How to Resolve Them

Intriguing signals with excesses over expected backgrounds have been observed in many astrophysical and terrestrial settings, which could potentially have a dark matter origin. Astrophysical excesses

Bound states of WIMP dark matter in Higgs-portal models. Part II. Thermal decoupling

The Higgs doublet can mediate a long-range interaction between multi-TeV particles coupled to the Weak interactions of the Standard Model, while its emission can lead to very rapid bound-state

References

SHOWING 1-10 OF 123 REFERENCES

SUSY implications from WIMP annihilation into scalars at the Galactic Center

An excess in $\gamma$-rays emanating from the galactic centre has recently been observed in the Fermi-LAT data. We investigate the new exciting possibility of fitting the signal spectrum by dark

Pseudoscalar Portal Dark Matter

A fermion dark matter candidate with a relic abundance set by annihilation through a pseudoscalar can evade constraints from direct detection experiments. We present simplified models that realize

Return of the WIMP: Missing energy signals and the Galactic Center excess

In a recent work, we emphasized that an excess in tri-lepton events plus missing energy observed by the ATLAS experiment at the LHC could be interpreted as a signal of low energy supersymmetry. In

NMSSM explanations of the Galactic center gamma ray excess and promising LHC searches

The Galactic Center Excess (GCE) is explained in the framework of the Next-to-Minimal Supersymmetric Standard Model (NMSSM) with a $Z_3$ discrete symmetry. We show that a resonant CP-odd Higgs boson

A systematic study of hidden sector dark matter: application to the gamma-ray and antiproton excesses

In hidden sector models, dark matter does not directly couple to the particle content of the Standard Model, strongly suppressing rates at direct detection experiments, while still allowing for large

Integrating in the Higgs portal to fermion dark matter

A bstractFermion dark matter (DM) interacting with the standard model through a Higgs portal requires non-renormalizable operators, signaling the presence of new mediator states at the electroweak

Probing dark matter annihilation in the Galaxy with antiprotons and gamma rays

A possible hint of dark matter annihilation has been found in Cuoco, Korsmeier and Krämer (2017) from an analysis of recent cosmic-ray antiproton data from AMS-02 and taking into account cosmic-ray

Scrutinizing the evidence for dark matter in cosmic-ray antiprotons

Global fits of primary and secondary cosmic-ray (CR) fluxes measured by AMS-02 have great potential to study CR propagation models and search for exotic sources of antimatter such as annihilating

Singlet-Doublet model: dark matter searches and LHC constraints

A bstractThe Singlet-Doublet model of dark matter is a minimal extension of the Standard Model with dark matter that is a mixture of a singlet and a non-chiral pair of electroweak doublet fermions.
...