6 papers
Photonic Freeze-In
Peter Cox, Matthew J. Dolan, Frederick J. Hiskens
We present a new scenario of freeze-in, where the dark matter is produced exclusively via the annihilation of photons. We study fermionic and scalar dark matter models with a focus…
Towards Measuring the CP-Violating Phase with Atmospheric Neutrinos
John F. Beacom, Nicole F. Bell, Matthew J. Dolan +2
We propose a new approach to measuring the CP-violating phase in neutrino mixing using atmospheric neutrinos, differing significantly from prior work. We develop an up-down flux ra…
Irreducible Constraints on Hadronically Interacting Sub-GeV Dark Matter
Peter Cox, Matthew J. Dolan, Avirup Ghosh
We derive conservative upper limits on the dark-matter--nucleon scattering cross-section for sub-GeV mass dark matter. Working exclusively within the low-energy chiral effective th…
New Limits on Light Dark Matter-Nucleon Scattering
Peter Cox, Matthew J. Dolan, Joshua Wood
We derive new bounds on hadronically-interacting, sub-GeV mass dark matter. First, we show that one-loop interactions with photons can be sufficient to maintain equilibrium between…
Quark-versus-gluon tagging in CMS Open Data with CWoLa and TopicFlow
Matthew J. Dolan, John Gargalionis, Ayodele Ore
We use the CMS Open Data to examine the performance of weakly-supervised learning for tagging quark and gluon jets at the LHC. We target +jet and dijet events as respective quar…
Neutrino portals to MeV WIMPs with s-channel mediators
Nicole F. Bell, Matthew J. Dolan, Avirup Ghosh +1
Large-scale neutrino detectors currently under construction will have the unique ability to probe the annihilation of low-mass thermal-relic dark matter to neutrinos. This represen…