Gravitational Production of Hidden Photon Dark Matter in Light of the XENON1T Excess

Nakayama, Kazunori; Tang, Yong

doi:10.48550/arxiv.2006.13159

Cited by 7 publications

(10 citation statements)

References 45 publications

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“…( 8) and g s,SM is the effective number of relativistic degrees of freedom for the entropy density. 5 In terms of ρ DM (a BBN ), ∆N BBN eff is defined to be…”

Section: B ∆N Eff Contributed By the Dark Photonmentioning

confidence: 99%

“…Especially, the prominence of the excess for m A ∈ (2 keV,3 keV) aroused many interesting interpretations based on various extensions of the SM. Absorption of a vector boson is one of the plausible possibilities for the excess in which case its suspected mass and kinetic mixing read m A ∈ (2 keV,3 keV) and κ ∼ 10 −15 respectively [2][3][4][5]. Provided this vector boson serves as a dominant component of DM today, its suspected mass regime could be of interest in regard to the small scale problems (e.g.…”

Section: Introductionmentioning

confidence: 99%

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Feebly Interacting $U(1)_{\rm B-L}$ Gauge Boson Warm Dark Matter and XENON1T Anomaly

Choi,

Yanagida,

Yokozaki

2020

Preprint

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The recent observation of an excess in the electronic recoil data by the XENON1T detector has drawn many attentions as a potential hint for an extension of the Standard Model (SM). Absorption of a vector boson with the mass of m A ∈ (2 keV,3 keV) is one of the feasible explanations to the excess. In the case where the vector boson explains the dark matter (DM) population today, it is highly probable that the vector boson belongs to a class of the warm dark matter (WDM) due to its suspected mass regime. In such a scenario, providing a good fit for the excess, the kinetic mixing κ ∼ 10 −15 asks for a non-thermal origin of the vector DM. In this letter, we consider a scenario where the gauge boson is nothing but the U (1)B−L gauge boson and its non-thermal origin is attributed to the decay of the scalar talking to the SM sector via a portal with the SM Higgs boson. We discuss implications for the dark sector interactions that the vector DM offers when it serves as a resolution to both the small scale problems that ΛCDM model encounters and the XENON1T anomaly.

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“…( 8) and g s,SM is the effective number of relativistic degrees of freedom for the entropy density. 5 In terms of ρ DM (a BBN ), ∆N BBN eff is defined to be…”

Section: B ∆N Eff Contributed By the Dark Photonmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Feebly Interacting $U(1)_{\rm B-L}$ Gauge Boson Warm Dark Matter and XENON1T Anomaly

Choi,

Yanagida,

Yokozaki

2020

Preprint

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“…A third explanation is the beta decay of tritium, which cannot be confirmed yet due to the lack knowledge of the tritium property. Some other new physics explanations have proposed to explain the XENON1T excess, which can be classified into the following five categories: (a) boosted DM-electron scattering [5][6][7][8][9][10][11][12]; (b) exotic neutrino interactions [13][14][15][16]; (c) absorption of bosons such as axions, dark photons [17][18][19][20][21][22][23][24][25]; (d ) "fake" photon signals from annihilation or decay of DM [26,27]; (e) Inelastic DM-electron scattering [28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Pseudo-Dirac Dark Matter in XENON1T

Chao,

Gao,

Jin

2020

Preprint

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The XENON1T dark matter experiment recently reported 0.65 ton-year exposure measurement on electron recoils , which shows an excess in 2 ∼ 3 KeV recoils above the detector background.In this paper we present a Pseudo-Dirac dark matter scenario to explain the excess via inelastic dark matter-electron scattering. With a KeV scale mass splitting between the two components of the Pseudo-Dirac dark matter, the slightly excited component can down-scatter on electrons. The desired dark matter masses are about 10 GeV with a 4 KeV mass-splitting and unity coupling to electrons, which generate the observed XENON1T recoil events, give the appropriate dark matter relic abundance and satisfy collider search limits.

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“…Although the solar axion explanation is in tension with astrophysical constraints [1,19], reexamination shows new possibility [20][21][22][23] and axionlike-particle (ALP) dark matter is much less constrained [20,24,25]. The light boson category also includes relaxion [26] and dark photon [27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Solar Neutrino Scattering with Electron into Massive Sterile Neutrino

Ge,

Pasquini,

Sheng

2020

Preprint

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The recent Xenon1T excess can be explained by solar neutrino scattering with electron via a light mediator, either scalar or vector, in addition to many other explanations from the dark sector. Since only the recoil electron is observable, a keV sterile neutrino instead of an active neutrino can appear in the final state. The sterile neutrino allows pseudoscalar mediator to explain the Xenon1T excess which was thought impossible. In addition, nonzero recoil energy lower bound arises from the sterile neutrino mass, which can be used to testify if the sterile neutrino is massive or not. We also briefly discuss the case of sterile neutrino final state with light Z mediator.

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Gravitational Production of Hidden Photon Dark Matter in Light of the XENON1T Excess

Cited by 7 publications

References 45 publications

Feebly Interacting $U(1)_{\rm B-L}$ Gauge Boson Warm Dark Matter and XENON1T Anomaly

Feebly Interacting $U(1)_{\rm B-L}$ Gauge Boson Warm Dark Matter and XENON1T Anomaly

Pseudo-Dirac Dark Matter in XENON1T

Solar Neutrino Scattering with Electron into Massive Sterile Neutrino

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