782 citations · 1.5k across the 7 of their papers we have counts for
7 papers
Cosmological beam dump: constraints on dark scalars mixed with the Higgs boson
Anthony Fradette, Maxim Pospelov, Josef Pradler +1
Precision cosmology provides a sensitive probe of extremely weakly coupled states due to thermal freeze-in production, with subsequent decays impacting physics during well-tested c…
Long-Lived Particles at the Energy Frontier: The MATHUSLA Physics Case
David Curtin, Marco Drewes, Matthew McCullough +85
We examine the theoretical motivations for long-lived particle (LLP) signals at the LHC in a comprehensive survey of Standard Model (SM) extensions. LLPs are a common prediction of…
BBN for the LHC: constraints on lifetimes of the Higgs portal scalars
Anthony Fradette, Maxim Pospelov
LHC experiments can provide a remarkable sensitivity to exotic metastable massive particles, decaying with significant displacement from the interaction point. The best sensitivity…
A facility to Search for Hidden Particles at the CERN SPS: the SHiP physics case
Sergey Alekhin, Wolfgang Altmannshofer, Takehiko Asaka +82
This paper describes the physics case for a new fixed target facility at CERN SPS. The SHiP (Search for Hidden Particles) experiment is intended to hunt for new physics in the larg…
Nucleosynthesis constraints on the faint vector portal
Anthony Fradette, Maxim Pospelov, Josef Pradler +1
New Abelian U(1)' gauge bosons can couple to the Standard Model through mixing of the associated field strength tensor with the one from hypercharge, . Her…
Cosmological Constraints on Very Dark Photons
Anthony Fradette, Maxim Pospelov, Josef Pradler +1
We explore the cosmological consequences of kinetically mixed dark photons with a mass between 1 MeV and 10 GeV, and an effective electromagnetic fine structure constant as small a…
Exciting dark matter in the galactic center
Fang Chen, James M. Cline, Anthony Fradette +2
We reconsider the proposal of excited dark matter (DM) as an explanation for excess 511 keV gamma rays from positrons in the galactic center. We quantitatively compute the cross se…