Collider constraints on a dark matter interpretation of the XENON1T excess

Primulando, Reinard; Julio, J.; Uttayarat, Patipan

doi:10.1140/epjc/s10052-020-08652-x

Cited by 18 publications

(10 citation statements)

References 41 publications

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“…This excess may be explained within the scenarios of two-component dark matter obtained in this work, given that one dark matter component is boosted with a velocity of 0.1c order [83,84,85,86,87,88,89,90,91]. Additionally, the U (1) N coupling constant, g N , is small enough to evade the low energy experimental bounds, simultaneously this enhances the fast dark matter charge, thus its signal strength as measured by the XENON1T [69].…”

Section: Small U (1) N Coupling: Probing the Xenon1t Excesssupporting

confidence: 53%

Dequantization of electric charge: Probing scenarios of cosmological multi-component dark matter

Van Loi,

Duc,

Van Dong

2021

Preprint

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Since the electric charge in the standard model is theoretically not quantized, we may have a variant of it, called dark charge. Similar to the electric charge, the dark charge neither commutes nor closes algebraically with SU (2)L. The condition of algebraic closure leads to a novel gauge extension, SU (2)L ⊗ U (1)Y ⊗ U (1)N , where Y and N determine the electric and dark charges, respectively, apart from the color group. We argue that the existence of the dark charge, thus N , leads to the novel scenarios of multi-component dark matter, in general. The dark matter stability is determined by a residual (or dark charge) gauge symmetry isomorphic to an even Z k discrete group, where k is specified dependent on the value of the neutrino dark charge. This residual symmetry divides the standard model particles into distinct classes, which possibly accommodate dark matter, but the dark matter candidate cannot decay due to the color and electric charge conservation. We analyze in detail three specific models according to k = 2, 4, 6 and determine the simplest dark matter candidates. For small U (1)N coupling, the twocomponent dark matter scenarios implied by the dark charge successfully explain the dark matter relic density and the recent XENON1T excess, as well as the beam dump, neutrino scattering, and astrophysical bounds. Otherwise, for large U (1)N coupling, we have multi-WIMPs coexisted beyond the weak scale.

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Section: Small U (1) N Coupling: Probing the Xenon1t Excesssupporting

confidence: 53%

Dequantization of electric charge: Probing scenarios of cosmological multi-component dark matter

Van Loi,

Duc,

Van Dong

2021

Preprint

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“…We note that our best fit point lies outside of the Xe 90% CL in both the g ae -g aγ and g ae -g eff aN planes. 7 This tension is significantly driven by stellar cooling, which imply g ae 10 −12 and g aγ O(10 −10 ). For our best-fit point, the larger value of g eff aN , outside the 90% CL for Xe only, can be understood by the need to compensate the very small value of g aγ in order to reproduce the right signal around 14.4 keV.…”

Section: Solar Alpsmentioning

confidence: 99%

Global fits of axion-like particles to XENON1T and astrophysical data

Athron

Balázs

Beniwal

et al. 2021

J. High Energ. Phys.

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The excess of electron recoil events seen by the XENON1T experiment has been interpreted as a potential signal of axion-like particles (ALPs), either produced in the Sun, or constituting part of the dark matter halo of the Milky Way. It has also been explained as a consequence of trace amounts of tritium in the experiment. We consider the evidence for the solar and dark-matter ALP hypotheses from the combination of XENON1T data and multiple astrophysical probes, including horizontal branch stars, red giants, and white dwarfs. We briefly address the influence of ALP decays and supernova cooling. While the different datasets are in clear tension for the case of solar ALPs, all measurements can be simultaneously accommodated for the case of a sub-dominant fraction of dark-matter ALPs. Nevertheless, this solution requires the tuning of several a priori unknown parameters, such that for our choices of priors a Bayesian analysis shows no strong preference for the ALP interpretation of the XENON1T excess over the background hypothesis.

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“…Note added. While this work was in progress, [115,145,[175][176][177][178][179][180][181][182][183][184][185][186][187][188][189][190][191][192][193][194] appeared. A number of these papers have partial overlap with the study presented here.…”

Section: Jhep01(2021)178mentioning

confidence: 99%

Exploring new physics with O(keV) electron recoils in direct detection experiments

Bloch

Caputo

Essig

et al. 2021

J. High Energ. Phys.

104

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Motivated by the recent XENON1T results, we explore various new physics models that can be discovered through searches for electron recoils in $$ \mathcal{O} $$ O (keV)-threshold direct-detection experiments. First, we consider the absorption of axion-like particles, dark photons, and scalars, either as dark matter relics or being produced directly in the Sun. In the latter case, we find that keV mass bosons produced in the Sun provide an adequate fit to the data but are excluded by stellar cooling constraints. We address this tension by introducing a novel Chameleon-like axion model, which can explain the excess while evading the stellar bounds. We find that absorption of bosonic dark matter provides a viable explanation for the excess only if the dark matter is a dark photon or an axion. In the latter case, photophobic axion couplings are necessary to avoid X-ray constraints. Second, we analyze models of dark matter-electron scattering to determine which models might explain the excess. Standard scattering of dark matter with electrons is generically in conflict with data from lower-threshold experiments. Momentum-dependent interactions with a heavy mediator can fit the data with dark matter mass heavier than a GeV but are generically in tension with collider constraints. Next, we consider dark matter consisting of two (or more) states that have a small mass splitting. The exothermic (down)scattering of the heavier state to the lighter state can fit the data for keV mass splittings. Finally, we consider a subcomponent of dark matter that is accelerated by scattering off cosmic rays, finding that dark matter interacting though an $$ \mathcal{O} $$ O (100 keV)-mass mediator can fit the data. The cross sections required in this scenario are, however, typically challenged by complementary probes of the light mediator. Throughout our study, we implement an unbinned Monte Carlo analysis and use an improved energy reconstruction of the XENON1T events.

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Collider constraints on a dark matter interpretation of the XENON1T excess

Cited by 18 publications

References 41 publications

Dequantization of electric charge: Probing scenarios of cosmological multi-component dark matter

Dequantization of electric charge: Probing scenarios of cosmological multi-component dark matter

Global fits of axion-like particles to XENON1T and astrophysical data

Exploring new physics with O(keV) electron recoils in direct detection experiments

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