FLArE up dark sectors with EM form factors at the LHC Forward Physics Facility

Extending the Discovery Potential for Inelastic-Dipole Dark Matter with FASER

“…Once produced, these particles can be detected in a variety of ways due to the up-scattering, down-scattering, and decay processes to which these same interactions give rise. Indeed, potential experimental signatures of inelastic-dipole dark matter include the scattering of χ 0 or χ 1 with atomic nuclei, events involving sizable missing transverse energy at colliders, and rare meson decays [28][29][30]. Existing limits on these processes place non-trivial constraints on our parameter space.…”

“…The corresponding decay processes for the case of an elastic MDM or EDM interaction were considered in Refs. [28][29][30]. Full expressions for the branching fractions BR(V → χ 0 χ 1 ) and BR(P → χ 0 χ 1 γ) for the aforementioned vector-and pseudoscalar-meson decay processes are provided in Appendix A for both the MDM-and an EDM-interaction cases.…”

Dark Sector Studies with Neutrino Beams

“…FLArE [22,132]: FLArE is a proposed liquid argon detector with O(10 ton) fiducial mass that is expected to be placed in the FPF and operate during the HL-LHC era. On top of studying interactions of high-energy neutrinos, this detector has a great potential to detect hidden sector particles; let us for instance stress searches for light dark matter [22,145] and millicharged particles [146].…”

“…ArgoNeuT [202], BEBC [203], Super-K [204], T2K/Hyper-Kamiokande [205], DUNE [201,206], and FLArE [146]. One can also add small dedicated detectors (similar to the milliQan detector [207]) to the neutrino facilities to improve the mCP sensitivity, which include FerMINI at Fermilab [208], SUBMET at J-PARC [209], and FORMOSA at LHC [147].…”

“…Limits from BEBC and CHARM II come from [203]. Projections from MicroBooNE, SHiP, DUNE, SBND [201], FORMOSA [131], FLArE [146], and T2K(+HK) [205] are shown as dotted lines.…”