Search for a Hidden Sector Scalar from Kaon Decay in the Dimuon Final State at ICARUS Abd Alrahman, F. ICARUS Collaboration Pelegrina Gutiérrez, Luis This work was supported by the U.S. Department of Energy; INFN; EU Horizon 2020 Research and Innovation Program under the Marie Sklodowska-Curie Grant Agreements No. 734303, No. 822185, No. 858199, and No. 101003460; and the Horizon Europe Research and Innovation Program under the Marie Sklodowska-Curie Grant Agreement No. 101081478. We present a search for long-lived particles (LLPs), produced in kaon decays, that decay to two muons inside the ICARUS neutrino detector. This channel would be a signal of hidden sector models that can address outstanding issues in particle physics such as the strong CP problem and the microphysical origin of dark matter. 2025-07-01T10:33:13Z 2025-07-01T10:33:13Z 2025-04-14 journal article Abd Alrahman, et al., ICARUS Collaboration. (2025). Search for a hidden sector scalar from kaon decay in the dimuon final state at ICARUS. Physical Review Letters, 134(15), 151801. [DOI: 10.1103/PhysRevLett.134.151801] https://hdl.handle.net/10481/105015 10.1103/PhysRevLett.134.151801 eng info:eu-repo/grantAgreement/EC/H2020/MSC/734303 info:eu-repo/grantAgreement/EC/H2020/MSC/822185 info:eu-repo/grantAgreement/EC/H2020/MSC/858199 info:eu-repo/grantAgreement/EC/H2020/MSC/101003460 info:eu-repo/grantAgreement/EC/HE/MSC/101081478 http://creativecommons.org/licenses/by/4.0/ open access Atribución 4.0 Internacional American Physical Society