Testing GeV-scale dark matter with fixed-target missing momentum experiments

Izaguirre, Eder; Krnjaic, Gordan; Schuster, Philip; Toro, Natalia

doi:10.1103/physrevd.91.094026

Cited by 98 publications

(144 citation statements)

References 118 publications

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“…We find that the proposed LDMX electron beam dump [158] can probe the entire allowed region of the left panel of figure 13. In our model the LDMX signal will be missing energy events, from the production of an A , followed by its decay to n 2 n 3 (surviving past the detector calorimeters).…”

Section: Jhep08(2018)079mentioning

confidence: 93%

“…The reach for BDX and MiniBooNe adapted from [61], and PIXIE [154][155][156][157] (corresponding to µ < 5 × 10 −8 ) are shown. LDMX [158] can probe the entire allowed region of the left panel, but is not sensitive to the heavier dark photon mass on the right panel. In every point of the plot ∆ is fixed to reproduce the observed relic density.…”

Section: ×10mentioning

confidence: 99%

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Exponentially light dark matter from coannihilation

D’Agnolo

Mondino

Wang

et al. 2018

J. High Energ. Phys.

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Dark matter may be a thermal relic whose abundance is set by mutual annihilations among multiple species. Traditionally, this coannihilation scenario has been applied to weak scale dark matter that is highly degenerate with other states. We show that coannihilation among states with split masses points to dark matter that is exponentially lighter than the weak scale, down to the keV scale. We highlight the regime where dark matter does not participate in the annihilations that dilute its number density. In this "sterile coannihilation" limit, the dark matter relic density is independent of its couplings, implying a broad parameter space of thermal relic targets for future experiments. Light dark matter from coannihilation evades stringent bounds from the cosmic microwave background, but will be tested by future direct detection, fixed target, and long-lived particle experiments.

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Section: Jhep08(2018)079mentioning

confidence: 93%

Section: ×10mentioning

confidence: 99%

Exponentially light dark matter from coannihilation

D’Agnolo

Mondino

Wang

et al. 2018

J. High Energ. Phys.

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“…Most generic searches typically focus on a dark photon and either assume that it decays invisibly and search for missing-energy signatures [58,59] -the strongest bounds using this strategy are currently from BaBar [60] and NA64 [61]. Alternatively, one can also try to observe its decay as bumps in a dilepton invariant spectrum such as in NA-48/2 [62], BaBar [63] and LHCb [64].…”

Section: Dark Higgs Boson At Accelerator Experimentsmentioning

confidence: 99%

Signatures of dark Higgs boson in light fermionic dark matter scenarios

Darmé¹,

Rao²,

Roszkowski³

2018

J. High Energ. Phys.

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Thermal dark matter scenarios based on light (sub-GeV) fermions typically require the presence of an extra dark sector containing both a massive dark photon along with a dark Higgs boson. The latter typically generates both the dark photon mass and an additional mass term for the dark sector fermions. This simple setup has both rich phenomenology and bright detection prospects at high-intensity accelerator experiments. We point out that in addition to the well studied pseudo-Dirac regime, this model can achieve the correct relic density in three different scenarios, and examine in details their properties and experimental prospects. We emphasize in particular the effect of the dark Higgs boson on both detection prospects and cosmological bounds.

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“…where α D = e 2 D /4π and the parameter f depends on m A ' and m χ [22]. For m A ' mχ = 3, f 10 for a scalar [18], and f 1 for a fermion [19]. This prediction provides an important target for the ( , m A ) parameter space which can be probed at the CERN SPS energies.…”

mentioning

confidence: 99%

Dark Matter Search in Missing Energy Events with NA64

Banerjee¹,

Burtsev²,

Chumakov³

et al. 2019

Phys. Rev. Lett.

253

311

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A search for sub-GeV dark matter production mediated by a new vector boson A , called dark photon, is performed by the NA64 experiment in missing energy events from 100 GeV electron interactions in an active beam dump at the CERN SPS. From the analysis of the data collected in the years 2016, 2017, and 2018 with 2.84 × 10 11 electrons on target no evidence of such a process has been found. The most stringent constraints on the A mixing strength with photons and the parameter space for the scalar and fermionic dark matter in the mass range 1 GeV are derived. Thus, demonstrating the power of the active beam dump approach for the dark matter search.

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Testing GeV-scale dark matter with fixed-target missing momentum experiments

Cited by 98 publications

References 118 publications

Exponentially light dark matter from coannihilation

Exponentially light dark matter from coannihilation

Signatures of dark Higgs boson in light fermionic dark matter scenarios

Dark Matter Search in Missing Energy Events with NA64

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