231 citations · 276 across the 6 of their papers we have counts for
5 papers · 1 filter
Neutron Lifetime Anomaly and Big Bang Nucleosynthesis
Tammi Chowdhury, Seyda Ipek
We calculate the Big Bang Nucleosynthesis abundances for helium-4 and deuterium for a range of neutron lifetimes, s, using the state-of-the-art Python package \t…
Dark Matter Freeze-out during Confinement
Jessica N. Howard, Seyda Ipek, Tim M. P. Tait +1
We explore the possibility that dark matter is a pair of vector-like fermionic doublets and propose a novel mechanism of dark matter production that procee…
Reducing cosmological small scale structure via a large dark matter-neutrino interaction: constraints and consequences
Bridget Bertoni, Seyda Ipek, David McKeen +1
Cold dark matter explains a wide range of data on cosmological scales. However, there has been a steady accumulation of evidence for discrepancies between simulations and observati…
CP Violation in Pseudo-Dirac Fermion Oscillations
Seyda Ipek, David McKeen, Ann E. Nelson
Supersymmetric theories with a symmetry have Dirac gauginos, solve the supersymmetric flavor and CP problems, and have distinctive collider signatures. However when superg…
A Renormalizable Model for the Galactic Center Gamma Ray Excess from Dark Matter Annihilation
Seyda Ipek, David McKeen, Ann E. Nelson
Evidence for an excess of gamma rays with O(GeV) energy coming from the center of our galaxy has been steadily accumulating over the past several years. Recent studies of the exces…