Collider detection of dark matter electromagnetic anapole moments

Alves, Alexandre; Santos, A. C. O.; Sinha, Kuver

doi:10.1103/physrevd.97.055023

Cited by 20 publications

(17 citation statements)

References 117 publications

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“…For an example comparison with previously proposed ADM searches, the mono-Z study of Ref. [28] showed an expected discovery reach of Λ 700 GeV for m χ = 100 GeV and a similar range of systematic uncertainty. The proposed VBF ADM search in this Letter is expected to be the most important mode for dis-covery, far exceeding the projected sensitivity achievable by the mono-X analyses.…”

Section: Discussionmentioning

confidence: 66%

“…The signal model was produced using FeynRules [35], following Ref. [28]. We produced several signal samples considering various values of A ≡ g Λ 2 , which as expected has a direct impact on the production cross section.…”

Section: Samples and Simulationmentioning

confidence: 99%

“…Collider studies of this class of operators have typically relied on the mono-X signature, where X can be a jet [27], a Z-boson [28] - [30], or a photon [31]. In a recent paper [28], one of the authors studied the effective operator in Eq. 1 using the mono-Z signature at the high-luminosity LHC (HL-LHC) [29,30].…”

Section: Introductionmentioning

confidence: 99%

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Anapole dark matter via vector boson fusion processes at the LHC

et al. 2019

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Dark matter that is electrically neutral but couples to the electromagnetic current through higherdimensional operators constitutes an interesting class of models. We investigate this class of models at the Large Hadron Collider, focusing on the anapole moment operator in an effective field theory (EFT) framework, and utilizing the vector boson fusion (VBF) topology. Assuming proton-proton collisions at √ s = 13 TeV, we present the VBF anapole dark matter (ADM) cross sections and kinematic distributions as functions of the free parameters of the EFT, the cutoff scale Λ and the ADM mass mχ. We find that the distinctive VBF topology of two forward jets and large dijet pseudorapidity gap is effective at reducing SM backgrounds, leading to a 5σ discovery reach for all kinematically allowed ADM masses with Λ ≤ 1.65 (1.15) TeV, assuming an integrated luminosity of 3000 (100) fb −1 .

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Section: Discussionmentioning

confidence: 66%

Section: Samples and Simulationmentioning

confidence: 99%

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Anapole dark matter via vector boson fusion processes at the LHC

et al. 2019

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“…10 and 11. While the bounds above are stronger than those derived from LHC data [82,83], future experiments, such as ILC and HL-LHC, may improve the sensitivity on these couplings by one to two orders of magnitude [84][85][86].…”

Section: F Missing Energy At High-energy Collidersmentioning

confidence: 76%

Light dark states with electromagnetic form factors

2019

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New particles χ that are electrically neutral but couple to the electromagnetic current via higherdimensional operators and that are sufficiently light, at or below the GeV-mass scale, can be produced in pairs in a number of dedicated high-intensity experiments. In this work we consider the production of χ through magnetic-and electric-dipole moments as well as through anapole moment and charge radius interactions in electron beams. We derive new constraints from BaBar, NA64 and mQ and forecast the future sensitivity on the existence of such states, from Belle-II, LDMX and BDX. We present for the first time a detailed treatment of the off-shell production of photons in electron beams with subsequent decay into a χχ pair in a 2-to-4 process. These direct limits are then compared to the effects on SM precision observables, as well as to bounds from flavor physics and high energy colliders. Finally, we consider the possibility that χ is dark matter and study ensuing astrophysical and cosmological constraints. We find that a combination of all considered probes rule out χ particles with mass-dimension five and six photon interactions as dark matter when assuming a standard freeze-out abundance.

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“…Moreover, proposed future colliders, such as HL-LHC and ILC, will be able to further improve the experimental sensitivity on all the EM form factors studied here; see e.g. [125][126][127].…”

Section: G Other Experimentsmentioning

confidence: 97%

Dark sector-photon interactions in proton-beam experiments

2020

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We consider electromagnetically neutral dark states that couple to the photon through higher dimensional effective operators, such as electric and magnetic dipole moment, anapole moment and charge radius operators. We investigate the possibility of probing the existence of such dark states, taking a Dirac fermion χ as an example, at several representative proton-beam experiments. As no positive signal has been reported, we obtain upper limits (or projected sensitivities) on the corresponding electromagnetic form factors for dark states lighter than several GeV. We demonstrate that while the current limits from proton-beam experiments are at most comparable with those from high-energy electron colliders, future experiments, such as DUNE and SHiP, will be able to improve the sensitivities to electric and magnetic dipole moment interactions, owing to their high intensity.

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Collider detection of dark matter electromagnetic anapole moments

Cited by 20 publications

References 117 publications

Anapole dark matter via vector boson fusion processes at the LHC

Anapole dark matter via vector boson fusion processes at the LHC

Light dark states with electromagnetic form factors

Dark sector-photon interactions in proton-beam experiments

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