3 papers
hep-ph2026
Neutrino Electroweak Couplings and the Neutrino Fog at Belle II
Carlos Henrique de Lima, David McKeen, Afif Omar +1
The mono-photon process at Belle II probes both invisible new states and the electroweak couplings of neutrinos. In this work, we study the proces…
hep-ph2025
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-ph2025
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…