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000641776 0247_ $$2arXiv$$aarXiv:2412.10315
000641776 0247_ $$2datacite_doi$$a10.3204/PUBDB-2025-05186
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000641776 041__ $$aEnglish
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000641776 088__ $$2arXiv$$aarXiv:2412.10315
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000641776 1001_ $$00000-0002-5389-4170$$aAdhikary, Jyotismita$$b0$$eCorresponding author
000641776 245__ $$aNeutrino-portal dark matter detection prospects at a future muon collider
000641776 260__ $$c2025
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000641776 500__ $$aPhys. Rev. D 111 (2025) 7, 075019. v2: minor improvements, conclusions unchanged. Matches published version
000641776 520__ $$aWith no concrete evidence for nongravitational interactions of dark matter to date, it is natural to wonder whether dark matter couples predominantly to the Standard Model (SM)’s neutrinos. Neutrino interactions (and the possible existence of additional neutrinophilic mediators) are substantially less understood than those of other SM particles, yet this picture will change dramatically in the coming decades with new neutrino sources. One potential new source arises with the construction of a high-energy muon collider (MuCol); due to muons’ instability, a MuCol is a source of high-energy collimated neutrinos. Importantly, since the physics of muon decays (into neutrinos) is very well-understood, this leads to a neutrino flux with systematic uncertainties far smaller than fluxes from conventional high-energy (proton-sourced) neutrino beams. In this work, we study the capabilities of a potential neutrino detector, “MuColν”, placed ∼100 m downstream of the MuCol interaction point. The MuColν detector would be especially capable of searching for a neutrinophilic mediator ϕ through the mononeutrino scattering process νμN→μ+ϕX, exceeding searches from other terrestrial approaches for mϕ in the ∼few MeV- ten GeV range. Even with a 10 kg-yr exposure, MuColν is capable of searching for well-motivated classes of thermal freeze-out and freeze-in neutrino-portal dark matter.
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000641776 7001_ $$00000-0002-4892-2093$$aKelly, Kevin J.$$b1
000641776 7001_ $$0P:(DE-H253)PIP1097110$$aKling, Felix$$b2
000641776 7001_ $$00000-0003-2677-0364$$aTrojanowski, Sebastian$$b3
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