On the fraction of dark matter in charged massive particles (CHAMPs)

Sánchez-Salcedo, F. J.; Martínez‐Gómez, E.; Magaña, Juan

doi:10.1088/1475-7516/2010/02/031

Cited by 20 publications

(26 citation statements)

References 67 publications

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“…A potentially even more powerful probe is, however, provided by the visible decay channels of the BSM mediator. Its on-shell production, and subsequent decay into SM states, may lead to spectacular signals represented by dijet and/or dilepton resonances 7 peaked at the mass of the mediator field. Among the models which will be discussed here these kinds of signal are particularly prominent in the case of spin-1 mediators, since their gauge-like couplings with the SM fermions allow a high production cross-section for these resonances.…”

Section: Searches Of Visible Decays Of the Mediatormentioning

confidence: 99%

“…Specifically, cosmological simulations rule out DM masses below a few keV [4][5][6]. (iii) The DM should be electromagnetically neutral, as a result of null searches for stable charged particles [7,8] as well as Direct Detection (DD) experiments, which we will review subsequently. (iv) The DM particle must be cosmologically stable since its presence is ascertained today, implying that its lifetime is larger than the age of the Universe.…”

Section: Introductionmentioning

confidence: 99%

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The waning of the WIMP? A review of models, searches, and constraints

et al. 2018

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Weakly Interacting Massive Particles (WIMPs) are among the best-motivated dark matter candidates. No conclusive signal, despite an extensive search program that combines, often in a complementary way, direct, indirect, and collider probes, has been detected so far. This situation might change in near future due to the advent of one/multi-TON Direct Detection experiments. We thus, find it timely to provide a review of the WIMP paradigm with focus on a few models which can be probed at best by these facilities. Collider and Indirect Detection, nevertheless, will not be neglected when they represent a complementary probe.

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Section: Searches Of Visible Decays Of the Mediatormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The waning of the WIMP? A review of models, searches, and constraints

et al. 2018

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“…The charged DM particles may diffuse into the disk as they interact with the turbulent magnetic field. The diffusion time scale can be estimated as τ diff ∼ 5H 2 d /(3R g v X ) [52]. If the τ diff is smaller than the acceleration time scale τ acc , the charged DM may be able to diffuse to the vicinity of the earth and leave a signal in direct detection experiments.…”

Section: B Evacuation Of Charged Dm From the Diskmentioning

confidence: 99%

Turning off the lights: How dark is dark matter?

2011

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We consider current observational constraints on the electromagnetic charge of dark matter. The velocity dependence of the scattering cross-section through the photon gives rise to qualitatively different constraints than standard dark matter scattering through massive force carriers. In particular, recombination epoch observations of dark matter density perturbations require that ǫ, the ratio of the dark matter to electronic charge, is less than 10 −6 for m X = 1 GeV, rising to ǫ < 10 −4 for m X = 10 TeV. Though naively one would expect that dark matter carrying a charge well below this constraint could still give rise to large scattering in current direct detection experiments, we show that charged dark matter particles that could be detected with upcoming experiments are expected to be evacuated from the Galactic disk by the Galactic magnetic fields and supernova shock waves, and hence will not give rise to a signal. Thus dark matter with a small charge is likely not a source of a signal in current or upcoming dark matter direct detection experiments.

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“…The arising is put into (26) and (27) to yield general expressions for p t and E 2 . First, we consider the linear EOS…”

Section: Linear or Nonlinear Equation Of Statementioning

confidence: 99%

Charged anisotropic matter with linear or nonlinear equation of state

et al. 2010

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Ivanov pointed out substantial analytical difficulties associated with self-gravitating, static, isotropic fluid spheres when pressure explicitly depends on matter density. Simplification achieved with the introduction of electric charge were noticed as well. We deal with self-gravitating, charged, anisotropic fluids and get even more flexibility in solving the Einstein-Maxwell equations. In order to discuss analytical solutions we extend Krori and Barua's method to include pressure anisotropy and linear or non-linear equations of state. The field equations are reduced to a system of three algebraic equations for the anisotropic pressures as well as matter and electrostatic energy densities. Attention is paid to compact sources characterized by positive matter density and positive radial pressure. Arising solutions satisfy the energy conditions of general relativity. Spheres with vanishing net charge contain fluid elements with unbounded proper charge density located at the fluid-vacuum interface. Notably the electric force acting on these fluid elements is finite, although the acting electric field is zero. Net charges can be huge ($10^{19}\,C$) and maximum electric field intensities are very large ($10^{23}-10^{24}\,statvolt/cm$) even in the case of zero net charge. Inward-directed fluid forces caused by pressure anisotropy may allow equilibrium configurations with larger net charges and electric field intensities than those found in studies of charged isotropic fluids. Links of these results with charged strange quark stars as well as models of dark matter including massive charged particles are highlighted. The van der Waals equation of state leading to matter densities constrained by cubic polynomial equations is briefly considered. The fundamental question of stability is left open.Comment: 22 Latex pages, 17 figures, Inclusion of new paragraph at the end of Conclusion & some of the old captions of the Figures are replaced with new caption

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On the fraction of dark matter in charged massive particles (CHAMPs)

Cited by 20 publications

References 67 publications

The waning of the WIMP? A review of models, searches, and constraints

The waning of the WIMP? A review of models, searches, and constraints

Turning off the lights: How dark is dark matter?

Charged anisotropic matter with linear or nonlinear equation of state

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