3 papers
hep-ph2026
Characterizing Dark Bosons at Chiral Belle
Carlos Henrique de Lima, David McKeen, Afif Omar +1
We explore the advantages of a polarized electron beam at Belle II, as proposed for ``Chiral Belle'', in the search for invisibly decaying (dark) bosons that weakly couple to the S…
hep-ph2026
BBN Constraints on the Hadronic Annihilation of sub-GeV Dark Matter
Afif Omar, Adam Ritz
We investigate the impact of residual annihilation from sub-GeV mass thermal relic dark matter candidates during big bang nucleosynthesis (BBN). Focusing on candidates with -wav…
hep-ph2024
Early Dark Energy During Big Bang Nucleosynthesis
David McKeen, Afif Omar
We study the impact of an early dark energy component (EDE) present during big bang nucleosynthesis (BBN) on the elemental abundances of deuterium D/H, and helium , as well as…