Dark atoms of dark matter from new stable quarks and leptons

Khlopov, Maxim Yu.

doi:10.1063/1.4732711

Cited by 4 publications

(4 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…New, successive, and stable generation [3,4,7] arises in heterotic string models. The additional fermions (two quarks U and D and two leptons N and E) are assumed to be superheavy: m U , m D , m E ∼ 1 TeV, m U < m D , m E and m N ∼ 50 GeV.…”

Section: New Successive Stable Generationmentioning

confidence: 99%

“…The electric charges of the new leptons and quarks are introduced by analogy with the charges of the standard generations. But, the values of y charges are determined from the condition of the reduction in Z − γ − y and Z − y − y anomalies (Z and γ are the standard neutral weak boson and photon; y is a new gauge boson) [7]. All standard model particles belong to the trivial representation of the new U(1) group, so y SM = 0.…”

Section: New Successive Stable Generationmentioning

confidence: 99%

“…There are variety of ways to solve this problem in models describing physics beyond the SM (see [1,2]). In this article, we discuss two possible extensions: a model with a new sequential stable fourth generation [3][4][5][6][7] and a minimal walking technicolor (WTC) model [8][9][10][11][12][13][14]. Both models assume the existence of additional superheavy fermions with new gauge interaction.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Asymmetric Dark Matter in Baryon Asymmetrical Universe

Beylin,

Khlopov,

Sopin

2024

Symmetry

View full text Add to dashboard Cite

New heavy particles with electroweak charges arise in extensions of the standard model. They should take part in sphaleron transitions in the early Universe, which balance baryon asymmetry with the excess of new charged particles. If electrically charged with charge −2n, they bind with n nuclei of primordial helium in dark atoms of dark matter. This makes it possible to find the ratio of densities of asymmetric dark matter and baryonic matter. Examples of the model with new, successive, and stable generation of quarks and leptons and the minimal walking technicolor model are considered.

show abstract

Section: New Successive Stable Generationmentioning

confidence: 99%

Section: New Successive Stable Generationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Asymmetric Dark Matter in Baryon Asymmetrical Universe

Beylin,

Khlopov,

Sopin

2024

Symmetry

View full text Add to dashboard Cite

show abstract

“…(See [13][14][15][16][17][18][19][20] for other examples of composite dark matter.) In the original CiDM model, the dark matter consists of a spin-0 meson, π d , that has a single heavy constituent quark.…”

Section: Introductionmentioning

confidence: 99%

The cosmology of composite inelastic dark matter

Alves

Behbahani

Schuster

et al. 2010

J. High Energ. Phys.

View full text Add to dashboard Cite

Composite dark matter is a natural setting for implementing inelastic dark matter -the O(100 keV) mass splitting arises from spin-spin interactions of constituent fermions. In models where the constituents are charged under an axial U(1) gauge symmetry that also couples to the Standard Model quarks, dark matter scatters inelastically off Standard Model nuclei and can explain the DAMA/LIBRA annual modulation signal. This article describes the early Universe cosmology of a minimal implementation of a composite inelastic dark matter model where the dark matter is a meson composed of a light and a heavy quark. The synthesis of the constituent quarks into dark hadrons results in several qualitatively different configurations of the resulting dark matter composition depending on the relative mass scales in the system.

show abstract

Cosmological implications of electromagnetically interacting dark matter: milli-charged particles and atoms with singly and doubly charged dark matter

Gautham

Sethi

2020

J. Cosmol. Astropart. Phys.

View full text Add to dashboard Cite

While the behavior of the dominant component of the dark matter is reasonably well established by cosmological observables, its particle nature and interactions with the rest of the matter are not known. We consider three dark matter models that admit electromagnetic interaction between baryons and dark matter: (a) milli-charged particle (CCDM) of charge qccdm and mass mccdm, (b) a neutral atom of two charged particles of mass mdd (DD), and (c) a neutral atom of doubly charged particle and helium nucleus (HeD). We derive and discuss in detail the formation, stability, and interaction of these atoms with baryons. We derive the implications of this new interaction in the tight-coupling approximation, which allows us to analytically gauge their impact on the matter power spectrum and CMB anisotropy. We incorporate this new interaction into the publicly-available code CLASS to obtain numerical results. We compare our results with Planck 2018 data to constrain the fraction of interacting dark matter. For the range of allowed astrophysical parameters, the HeD atom yields the results of ΛCDM model for k < 1 Mpc−1, and hence its fraction is not constrained by CMB anisotropy data which is sensitive to k < 0.2 Mpc−1. For mdd ≳ 25 GeV, the DD atom is also not constrained by CMB data. For mdd = 10 GeV, the CMB data constrains the fraction of DD atoms to be smaller than 4% of the total CDM component. For qccdm = 10−6e and mccdm = 50 MeV, the CCDM fraction is constrained to be less than 1%.

show abstract

Dark atoms of dark matter from new stable quarks and leptons

Cited by 4 publications

References 55 publications

Asymmetric Dark Matter in Baryon Asymmetrical Universe

Asymmetric Dark Matter in Baryon Asymmetrical Universe

The cosmology of composite inelastic dark matter

Cosmological implications of electromagnetically interacting dark matter: milli-charged particles and atoms with singly and doubly charged dark matter

Contact Info

Product

Resources

About