411 citations · 4.6k across the 44 of their papers we have counts for
23 papers · 1 filter
Seasonal dark matter from the LUX-ZEPLIN high-energy event
Christopher McCabe
The LUX-ZEPLIN experiment has reported a single nuclear recoil at $248\pm23({\rm stat})\pm23({\rm sys})\keV$ in an extended search window. Inelastic dark matter, in which the scatt…
Super-Nyquist ultralight dark matter searches with broadband atom gradiometers
Leonardo Badurina, Ankit Beniwal, Christopher McCabe
Atom gradiometers have emerged as compelling broadband probes of scalar ultralight dark matter (ULDM) candidates that oscillate with frequencies between approximately Hz…
Ultralight dark matter searches at the sub-Hz frontier with atom multigradiometry
Leonardo Badurina, Valerie Gibson, Christopher McCabe +1
Single-photon atom gradiometry is a powerful experimental technique that can be employed to search for the oscillation of atomic transition energies induced by ultralight scalar da…
Precise predictions and new insights for atomic ionisation from the Migdal effect
Peter Cox, Matthew J. Dolan, Christopher McCabe +1
The scattering of neutral particles by an atomic nucleus can lead to electronic ionisation and excitation through a process known as the Migdal effect. We revisit and improve upon…
Fuelling the search for light dark matter-electron scattering with spherical proportional counters
Louis Hamaide, Christopher McCabe
Dark matter (DM) detectors employing a Spherical Proportional Counter (SPC) have demonstrated a single-electron detection threshold and are projected to have small background rates…
Directly detecting sub-GeV dark matter with electrons from nuclear scattering
Matthew J. Dolan, Felix Kahlhoefer, Christopher McCabe
Dark matter (DM) particles with mass in the sub-GeV range are an attractive alternative to heavier weakly-interacting massive particles, but direct detection of such light particle…
US Cosmic Visions: New Ideas in Dark Matter 2017: Community Report
Marco Battaglieri, Alberto Belloni, Aaron Chou +248
This white paper summarizes the workshop "U.S. Cosmic Visions: New Ideas in Dark Matter" held at University of Maryland on March 23-25, 2017.
Prospects for dark matter detection with inelastic transitions of xenon
Christopher McCabe
Dark matter can scatter and excite a nucleus to a low-lying excitation in a direct detection experiment. This signature is distinct from the canonical elastic scattering signal bec…
Constraining Dark Matter Interactions with Pseudoscalar and Scalar Mediators Using Collider Searches for Multi-jets plus Missing Transverse Energy
Oliver Buchmueller, Sarah A. Malik, Christopher McCabe +1
The mono-jet search, looking for events involving missing transverse energy (MET) plus one or two jets, is the most prominent collider dark matter search. We show that multi-jet se…
A taste of dark matter: Flavour constraints on pseudoscalar mediators
Matthew J. Dolan, Felix Kahlhoefer, Christopher McCabe +1
Dark matter interacting via the exchange of a light pseudoscalar can induce observable signals in indirect detection experiments and experience large self-interactions while evadin…
A Tale of Tails: Dark Matter Interpretations of the Fermi GeV Excess in Light of Background Model Systematics
Francesca Calore, Ilias Cholis, Christopher McCabe +1
Several groups have identified an extended excess of gamma rays over the modeled foreground and background emissions towards the Galactic center (GC) based on observations with the…
Characterising dark matter searches at colliders and direct detection experiments: Vector mediators
Oliver Buchmueller, Matthew J. Dolan, Sarah A. Malik +1
We introduce a Minimal Simplified Dark Matter (MSDM) framework to quantitatively characterise dark matter (DM) searches at the LHC. We study two MSDM models where the DM is a Dirac…
Quantifying the evidence for Dark Matter in CoGeNT data
Jonathan H. Davis, Christopher McCabe, Celine Boehm
We perform an independent analysis of data from the CoGeNT direct detection experiment to quantify the evidence for dark matter recoils. We critically re-examine the assumptions th…
A weighty interpretation of the Galactic Centre excess
Celine Boehm, Matthew J. Dolan, Christopher McCabe
Previous attempts at explaining the gamma-ray excess near the Galactic Centre have focussed on dark matter annihilation directly into Standard Model particles. This results in a pr…
Higgs vacuum stability from the dark matter portal
Valentin V. Khoze, Christopher McCabe, Gunnar Ro
We consider classically scale-invariant extensions of the Standard Model (CSI ESM) which stabilise the Higgs potential and have good dark matter candidates. In this framework all m…
Extended gamma-ray emission from Coy Dark Matter
Celine Boehm, Matthew J. Dolan, Christopher McCabe +2
We show that it is possible for WIMP dark matter to produce a large signal in indirect dark matter searches without producing signals elsewhere. We illustrate our point by fitting…
Beyond Effective Field Theory for Dark Matter Searches at the LHC
O. Buchmueller, Matthew J. Dolan, Christopher McCabe
We study the validity of effective field theory (EFT) interpretations of monojet searches for dark matter at the LHC for vector and axial-vector interactions. We show that the EFT…
A Lower Bound on the Mass of Cold Thermal Dark Matter from Planck
Celine Boehm, Matthew J. Dolan, Christopher McCabe
We show that the new measurement of the effective number of neutrinos Neff by the Planck satellite can be used to set a robust lower bound on the mass of cold thermal dark matter o…
Neutralino dark matter and the Fermi gamma-ray lines
Guillaume Chalons, Matthew J. Dolan, Christopher McCabe
Motivated by recent claims of lines in the Fermi gamma-ray spectrum, we critically examine means of enhancing neutralino annihilation into neutral gauge bosons. The signal can be b…
DAMA and CoGeNT without astrophysical uncertainties
Christopher McCabe
The CoGeNT collaboration has reported evidence of an annual modulation in its first fifteen months of data. Here we compare the amplitude and phase of this signal to the modulation…
On the DAMA and CoGeNT Modulations
Mads T. Frandsen, Felix Kahlhoefer, John March-Russell +3
DAMA observes an annual modulation in their event rate, as might be expected from dark matter scatterings, while CoGeNT has reported evidence for a similar modulation. The simplest…
The Astrophysical Uncertainties Of Dark Matter Direct Detection Experiments
Christopher McCabe
The effects of astrophysical uncertainties on the exclusion limits at dark matter direct detection experiments are investigated for three scenarios: elastic, momentum dependent and…
Neutrino-Flavoured Sneutrino Dark Matter
John March-Russell, Christopher McCabe, Matthew McCullough
A simple theory of supersymmetric dark matter (DM) naturally linked to neutrino flavour physics is studied. The DM sector comprises a spectrum of mixed lhd-rhd sneutrino states whe…