2012
DOI: 10.1103/physrevd.85.101302
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Millicharged atomic dark matter

Abstract: We present a simplified version of the atomic dark matter scenario, in which charged dark constituents are bound into atoms analogous to hydrogen by a massless hidden sector U(1) gauge interaction. Previous studies have assumed that interactions between the dark sector and the standard model are mediated by a second, massive Z ′ gauge boson, but here we consider the case where only a massless γ ′ kinetically mixes with the standard model hypercharge and thereby mediates direct detection. This is therefore the … Show more

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Cited by 193 publications
(217 citation statements)
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“…(28)), the millicharged particle strongly prefers to "hide" in oxygen rather than hydrogen. Our estimate is in accordance with the qualitative argument presented in [17]. For the rest of the ǫ phase space where the reactions (33) are still in thermal equilibrium i.e.…”
Section: B Anomalous Isotope Constraintssupporting
confidence: 77%
See 1 more Smart Citation
“…(28)), the millicharged particle strongly prefers to "hide" in oxygen rather than hydrogen. Our estimate is in accordance with the qualitative argument presented in [17]. For the rest of the ǫ phase space where the reactions (33) are still in thermal equilibrium i.e.…”
Section: B Anomalous Isotope Constraintssupporting
confidence: 77%
“…Composite dark matter (with charged constituents) is an attractive scenario that has been studied extensively [9][10][11][12][13][14]. Recently there has been a revived interest on millicharged dark matter via Stueckelberg Z ′ models [15,16], in the form of millicharged atomic dark mat- * Electronic address: kouvaris@cp3.sdu.dk ter [17], or in the form of MeV particles in order to explain the 511 keV line [18].…”
Section: Introductionmentioning
confidence: 99%
“…While there are many SIDM scenarios that mediate the self-scattering interaction through a light force carrier, in this paper we will use the dark atom model as a benchmark [34][35][36][37][38][39][40][41][42]48,[50][51][52][53][54][55][56][57][58][59]. In this model, dark matter is composed of two different particles, oppositely charged under a new long-range Abelian gauge group Uð1Þ D , mediated by a dark photon ϕ.…”
Section: A Dark Atomsmentioning
confidence: 99%
“…While it is not required, such a large cross section makes it reasonable to consider the existence of light force carriers in the dark sector. This could occur, for example, in dark atom models interacting through dark photons [34,48,[50][51][52][53][54][55][56][57], in mirror dark matter models [35][36][37][38][39][40][41][42]58,59,85], or dark matter coupled to Standard Model photons [60][61][62][63][64][65][66][67], neutrinos [24][25][26][27][28][29][30][31][32][33], or to some other new light particle [68][69][70][71][72][73][86][87][88].…”
Section: Self-interactions and Structure Formationmentioning
confidence: 99%
“…[22,23,24,25,26,27,28,29,30] (see also [31] for a more detailed bibliography). Such models allow for a very rich dark matter phenomenology, especially if the hidden sector contains unbroken gauge interactions.…”
Section: Dissipative Dark Matter Modelsmentioning
confidence: 99%