Author

Doojin Kim

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Preprint Oct 2026

Probing Heavy Neutral Leptons through New Gauge Interactions at the Forward Physics Facilities

We investigate the prospects for improving the heavy neutral lepton (HNL) searches at the far-forward LHC experiments FASER and FASER$\nu$, as well as their proposed HL-LHC successors, FASER2 and FASER$\nu$2, using new HNL production mechanisms. We consider scenarios in which HNLs couple directly to a new $U(1)$ gauge...

Francis M. Burk, P. S. Dev, Bhaskar Dutta et al. · 0 citations

Preprint Sep 2026

High-Energy Nuclear Recoils from Boosted Dark Matter for the LZ 248-keV Event: Beyond the Halo-Dependent High-Velocity Tail

The LUX-ZEPLIN (LZ) Collaboration has reported a nuclear-recoil candidate at $E_R=248\pm23_{\rm stat}\pm23_{\rm sys}$ keV, with a maximum local significance of $3.4\sigma$ and a global significance of $2.6\sigma$. A prominent interpretation invokes heavy halo dark matter near an inelastic threshold and therefore depend...

Haider Alhazmi, Doojin Kim, Kyoungchul Kong et al. · 32 citations · ⚡1