Hidden Photon Dark Matter in the Light of XENON1T and Stellar Cooling

Alonso-Álvarez, Gonzalo; Ertas, Fatih; Jaeckel, Joerg; Kahlhoefer, Felix; Thormaehlen, Lennert J.

doi:10.48550/arxiv.2006.11243

Cited by 31 publications

(47 citation statements)

References 59 publications

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“…The excess may be interpreted as a contribution from the solar axion [1], but this interpretation is inconsistent with the stellar cooling constraint, in particular the observation of white dwarfs and red giants [2]. On the other hand, various connections of the XENON1T excess with particle physics models, constraints and implications have been investigated in [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. Absorption of bosonic dark matter (DM) may also give similar signals [19,20].…”

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confidence: 99%

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

Nakayama,

Tang

2020

Preprint

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Recently, the XENON1T experiment has reported an excess in the electronic recoil events. The excess is consistent with the interpretation of absorption of 3 keV bosonic dark matter, for example, hidden photon dark matter with kinetic mixing of the order of 10 −15 . We point out that the minimally gravitational production provides a viable mechanism for obtaining a correct relic hidden photon abundance. We present parameter dependence of the hidden photon dark matter abundance on the inflationary scale H inf and also the reheating temperature T R . We show that the inflationary Hubble scale and reheating temperature are both bounded from below, H inf 7 × 10 11 GeV, T R 10 2 GeV. In particular, the high-scale inflation is consistent with 3 keV hidden photon dark matter.

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confidence: 99%

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

Nakayama,

Tang

2020

Preprint

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“…However, the required model parameters are found to be in conflict with other constraints, particularly the astrophysical observations [4][5][6][7][8]. Alternatively, several attempts [9][10][11][12][13] have been proposed to explain the XENON1T data.…”

Section: Introductionmentioning

confidence: 99%

Sun Heated MeV-scale Dark Matter and the XENON1T Electron Recoil Excess

Chen,

Cui,

Shu

et al. 2020

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The XENON1T collaboration reported an excess of the low-energy electron recoil events between 1 and 7 keV. We propose to explain such an anomaly by the MeV-scale dark matter (DM) heated by the interior of the Sun due to the same DM-electron interaction as in the detector. The kinetic energies of heated DM particles can reach a few keV, and naturally account for the excess signals detected by XENON1T. The inferred DM-electron scattering cross-section is about 0.1 pb, which is consistent with current observations. This model does not rely on any special assumptions on DM models, which serves as a general explanation of the XENON1T anomaly via DM-electron interaction. The spectrum of the Sun-heated DM is typically soft comparing to other boosted DM, so the small recoil events are expected to be abundant in this scenario. Future direct detection experiments with lower thresholds can distinguish this scenario with other boosted DM models or solar axion models.

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“…Quite recently, a tantalizing hint has been announced for the potential dark matter signals from the electron recoil events in the recoil energy, E R = 1−10 keV, from XENON1T experiment [1]. The origin of the Xenon excess has been pondered over by particle physicists as seen from a lot of the already published articles on the arXiv for the last few days [2][3][4][5][6]. A simple explanation with the solar axion or the neutrino magnetic dipole moment has been put forward from the XENON1T collaboration, but both cases are inconsistent with the star cooling constraints, because the electron coupling to the axion or the neutrino magnetic dipole moment required for the Xenon excess exceeds them by the order of magnitude [1].…”

Section: Introductionmentioning

confidence: 99%

Exothermic Dark Matter for XENON1T Excess

Lee

2020

Preprint

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Motivated by the recent excess in the electron recoil from XENON1T experiment, we consider the possibility of exothermic dark matter, which is composed of two states with mass splitting. The heavier state down-scatters off the electron into the lighter state, making an appropriate recoil energy required for the Xenon excess even for the standard Maxwellian velocity distribution of dark matter. Accordingly, we determine the mass difference between two component states of dark matter to the peak electron recoil energy at about 2.5 keV up to the detector resolution, accounting for the recoil events over E R = 2 − 3 keV, which are most significant. We include the effects of the phase-space enhancement and the atomic excitation factor to calculate the required scattering cross section for the Xenon excess. We discuss the implications of dark matter interactions in the effective theory for exothermic dark matter and a massive Z mediator and provide microscopic models realizing the required dark matter and electron couplings to Z .

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Hidden Photon Dark Matter in the Light of XENON1T and Stellar Cooling

Cited by 31 publications

References 59 publications

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

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

Sun Heated MeV-scale Dark Matter and the XENON1T Electron Recoil Excess

Exothermic Dark Matter for XENON1T Excess

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