A Snowmass Whitepaper: Dark Matter Production at Intensity-Frontier Experiments

Krnjaic, G.; Toro, N.; Berlin, A.; Batell, B.; Blinov, N.; Darme, L.; DeNiverville, P.; Harris, P.; Hearty, C.; Hostert, M.; Kelly, K. J.; McKeen, D.; Trojanowski, S.; Tsai, Y. -D.

doi:10.48550/arxiv.2207.00597

Cited by 4 publications

(9 citation statements)

References 106 publications

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“…The mass mixing in the gauge sector can be generated if the hidden U(1) X gauge boson C µ also receives a tiny SM Higgs mass. 2 One way to realize such scenario is to gauge a linear combination of the hypercharge and any quantum number X, i.e., U(1) y+X where y is a very small fraction of the hypercharge Y [54]. Thus the dark particle, in this case, can carry a U(1) y+X charge y.…”

Section: Jcap05(2024)112mentioning

confidence: 99%

“…One should not ignore the hidden sector interactions, even they are ultraweak, and compute the dark matter relic density through "pure freeze-in" production. (2) The four-point freeze-in production of the dark photon is as important as the three-point freeze-in production channels, and must be taken into account at all times.…”

Section: Case 2 (Dark Matter χ)mentioning

confidence: 99%

“…If millicharge particles exist, the lightest millicharge particle must be stable and can serve as the dark matter candidate. Experiments have searched for years and established stringent bounds for the millicharge dark matter particle, for reviews see [1,2]. In this paper, we concentrate on millicharge dark matter in the sub-GeV mass range, which has been extensively investigated by experimental searches .…”

Section: Relevant Scattering Cross-sections 1 Introductionmentioning

confidence: 99%

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Sub-GeV millicharge dark matter from the U(1)_X hidden sector

Feng,

Zhang,

Zhang

2024

J. Cosmol. Astropart. Phys.

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We conduct a comprehensive study on the sub-GeV millicharge dark matter produced through the freeze-in mechanism. We discuss in general the mixing mechanism, encompassing both kinetic mixing and mass mixing, between the U(1) X hidden sector and the standard model, which can generate millicharge carried by the dark fermions from the hidden sector. We discuss in depth how such millicharge is generated, and clarify several misunderstandings regarding this subject in the literature. Without employing an effective field theory approach, where the photon field directly mixed with the additional U(1), we analyze a general renormalizable model and investigate the complete evolution of the hidden sector particles. Due to the substantial self-interactions among hidden sector particles, the evolution of the hidden sector temperature plays a crucial role, which is addressed concurrently with the number densities of hidden sector particles by solving a set of coupled Boltzmann equations. We thoroughly examine eight benchmark models from six distinct cases. Some of our key findings from the analysis of these benchmark models may be generalizable and applicable to broader freeze-in scenarios. We also explore the possibility that the 𝒪(keV) U(1) X dark photon is a viable dark matter candidate, even though it can contribute at most ∼ 5% to the total observed dark matter relic density.

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Section: Jcap05(2024)112mentioning

confidence: 99%

Section: Case 2 (Dark Matter χ)mentioning

confidence: 99%

Section: Relevant Scattering Cross-sections 1 Introductionmentioning

confidence: 99%

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Sub-GeV millicharge dark matter from the U(1)_X hidden sector

Feng,

Zhang,

Zhang

2024

J. Cosmol. Astropart. Phys.

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“…Experimental efforts have mainly focused on direct detection of galactic DM within the so called "WIMPs paradigm" that assumes the existence of slow-moving cosmological weakly interacting particles with mass larger than 1 GeV [3][4][5]. Due to the lack of evidence in "traditional" DM searches, there has been increased experimental activity directed toward the search for light DM (LDM) in the MeV-GeV mass range [6][7][8][9]. This largely unexplored mass region is theoretically well justified with the assumption that DM has a thermal origin [10,11].…”

Section: Introduction and Theoretical Frameworkmentioning

confidence: 99%

“…Present accelerator technology provides high intensity particle beams of moderate energy that are well suited for the discovery of LDM [6,7]. In particular, electron beam dump experiments have been shown to have high sensitivity to light dark matter [18][19][20].…”

Section: Introduction and Theoretical Frameworkmentioning

confidence: 99%

Dark matter search with the BDX-MINI experiment

Battaglieri¹,

Bondì²,

Celentano³

et al. 2022

Preprint

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BDX-MINI is a beam dump experiment optimized to search for Light Dark Matter produced in the interaction of the intense CEBAF 2.176 GeV electron beam with the Hall A beam dump at Jefferson Lab. The BDX-MINI detector consists of a PbWO4 electromagnetic calorimeter surrounded by a hermetic veto system for background rejection. The experiment accumulated 2.56 × 10 21 EOT in six months of running. Simulations of fermionic and scalar Dark Matter interactions with electrons of the active volume of the BDX-MINI detector were used to estimate the expected signal. Data collected during the beam-off time allowed us to characterize the background dominated by cosmic rays. A blind data analysis based on a maximum-likelihood approach was used to optimize the experiment sensitivity. An upper limit on the production of light dark matter was set using the combined event samples collected during beam-on and beam-off configurations. In some kinematics, this pilot experiment is sensitive to the parameter space covered by some of the most sensitive experiments to date, which demonstrates the discovery potential of the next generation beam dump experiment planned at intense electron beam facilities.

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Cosmic-ray boosted dark matter in Xe-based direct detection experiments

Maity,

Laha

2024

Eur. Phys. J. C

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LUX-ZEPLIN (LZ) collaboration has achieved the strongest constraint on weak-scale dark matter (DM)-nucleon spin-independent (SI) scattering cross section in a large region of parameter space. In this paper, we take a complementary approach and study the prospect of detecting cosmic-ray boosted sub-GeV DM in LZ. In the absence of a signal for DM, we improve upon the previous constraints by a factor of $$\sim 2$$ ∼ 2 using the LZ result for some regions of the parameter space. We also show that upcoming XENONnT and future Darwin experiments will be sensitive to cross sections smaller by factors of $$\sim 3$$ ∼ 3 and $$\sim 10$$ ∼ 10 compared to the current LZ limit, respectively.

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A Snowmass Whitepaper: Dark Matter Production at Intensity-Frontier Experiments

Cited by 4 publications

References 106 publications

Sub-GeV millicharge dark matter from the U(1)_X hidden sector

Sub-GeV millicharge dark matter from the U(1)_X hidden sector

Dark matter search with the BDX-MINI experiment

Cosmic-ray boosted dark matter in Xe-based direct detection experiments

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A Snowmass Whitepaper: Dark Matter Production at Intensity-Frontier Experiments

Cited by 4 publications

References 106 publications

Sub-GeV millicharge dark matter from the U(1) X hidden sector

Sub-GeV millicharge dark matter from the U(1) X hidden sector

Dark matter search with the BDX-MINI experiment

Cosmic-ray boosted dark matter in Xe-based direct detection experiments

Contact Info

Product

Resources

About

Sub-GeV millicharge dark matter from the U(1)_X hidden sector

Sub-GeV millicharge dark matter from the U(1)_X hidden sector