Warm dark matter from a gravitational freeze-in in extra dimensions

Giorgi, Arturo de

doi:10.1007/jhep04(2023)032

Cited by 8 publications

(3 citation statements)

References 54 publications

(76 reference statements)

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“…There are numerous other DM models based on conformal sectors which go beyond the canonical paradigm of WIMP DM in a composite Higgs setting. These include conformal freeze-in [30][31][32][33], continuum dark matter [34][35][36][37] and other models featuring continua [38][39][40][41], freeze-in from warped extra dimensions [42][43][44][45][46][47], dilaton-mediated models [48][49][50][51][52], and others [53][54][55][56]. Some of the freeze-in models accommodate light DM candidates, but to our knowledge, our model is the first example of light conformal DM with a thermal dark sector.…”

Section: Jhep11(2023)186mentioning

confidence: 99%

Forbidden conformal dark matter at a GeV

Ferrante,

Ismail,

Lee

et al. 2023

J. High Energ. Phys.

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We introduce a model of dark matter (DM) where the DM is a composite of a spontaneously broken conformal field theory. The DM is a thermal relic with its abundance determined by the freeze-out of annihilations to dilatons, the Goldstone boson of broken conformal symmetry. If the dilaton is heavier than the DM this is an example of forbidden DM. We explore the phenomenology of this model in its 5D dual description, corresponding to a warped extra dimension with the Standard Model on the ultraviolet brane and the DM on the infrared brane. We find the model is compatible with theoretical and experimental constraints for DM masses in the 0.1–10 GeV range. The conformal phase transition is supercooled and strongly first-order. It can source large stochastic gravitational wave signals consistent with those recently observed at pulsar timing arrays like NANOGrav. The majority of the viable parameter space will be probed by future detectors designed to search for long-lived particles, including most of the region favored by the NANOGrav signal. The rest of the parameter space can be probed at future direct detection experiments.

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Section: Jhep11(2023)186mentioning

confidence: 99%

Forbidden conformal dark matter at a GeV

Ferrante,

Ismail,

Lee

et al. 2023

J. High Energ. Phys.

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“…These cancellations are of great interest for phenomenological studies. For example, spin-2 particles have been considered as mediators to the dark sector or directly as dark matter particles [13][14][15][16][17][18][19][20][21][22]. For these studies it is of crucial importance how the amplitudes that control the cross sections behave at high momentum transfer.…”

Section: Introductionmentioning

confidence: 99%

Gravity-matter sum rules in models with a single extra-dimension

de Giorgi,

Vogl

2024

J. High Energ. Phys.

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We prove a set of sum rules needed for KK-graviton pair production from matter in orbifolded extra-dimensional models. The sum rules can be found in full generality by considering the properties of solutions to the Sturm-Liouville problem, which describes the wave functions and the masses of the KK-gravitons in four dimensions. They ensure cancellations in the amplitudes of the processes mentioned above which considerably reduce their growth with s in the high-energy limit. This protects extra-dimensional theories from the low-scale unitarity problems that plague other theories with massive spin-2 particles. We argue that such relations are valid for a broader category of models thus generalizing our previous results that were limited to the large μ limit of the Randall-Sundrum model.

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“…In particular, the typical scenarios and the regarding thermal target associated with dark boson mediators include spin-0, spin-1 and spin-2 particles such as the hidden Higgs boson [13][14][15][16][17][18][19], the dark photon [20][21][22][23][24][25][26][27][28][29][30][31][32], and the dark graviton [33][34][35][36][37][38][39][40][41][42][43][44][45], respectively. Also, in the mass range of light DM from few MeV to GeV the fixed-target experiments combine the advantages of high-energy particle beam and its relative large intensity.…”

Section: Introductionmentioning

confidence: 99%

Resonant probing spin-0 and spin-2 dark matter mediators with fixed target experiments

Voronchikhin

2023

Phys. Rev. D

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We discuss the thermal target curves of Majorana, Dirac, scalar and vector light dark matter (DM) that are associated with the freeze-out mechanism via the annihilation into 𝑒 + 𝑒 − pair through the electron-specific spin-0 mediator of dark matter. We also discuss the mechanism to produce the regarding DM mediator in the electron (positron) fixed-target experiments such as NA64e and LDMX. We derive the corresponding experimental reaches of the NA64e and LDMX that are complementary to the DM thermal target parameter space.

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Warm dark matter from a gravitational freeze-in in extra dimensions

Cited by 8 publications

References 54 publications

Forbidden conformal dark matter at a GeV

Forbidden conformal dark matter at a GeV

Gravity-matter sum rules in models with a single extra-dimension

Resonant probing spin-0 and spin-2 dark matter mediators with fixed target experiments

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