Mirror symmetry: from active and sterile neutrino masses to baryonic and dark matter asymmetries

Gu, Ping

doi:10.1016/j.nuclphysb.2013.05.013

Cited by 10 publications

(7 citation statements)

References 180 publications

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“…Experiments have shown that this is not the case; the solar, atmospheric, and longbaseline neutrino experiments can all be accounted for with just the three ordinary neutrinos (see for example the review [127]). Some anomalies remain, but it seems unlikely that they could be explained with mirror neutrino oscillations, unless the mirror symmetry was broken in some way (see [128] for some recent work in this direction). The conclusion is that on length scales probed by the solar, atmospheric, and longbaseline neutrino experiments, there is no convincing evidence for any oscillations into mirror neutrinos.…”

Section: Type-iii Seesawmentioning

confidence: 99%

Mirror dark matter: Cosmology, galaxy structure and direct detection

Foot

2014

Int. J. Mod. Phys. A

221

266

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A simple way to accommodate dark matter is to postulate the existence of a hidden sector. That is, a set of new particles and forces interacting with the known particles predominantly via gravity. In general this leads to a large set of unknown parameters, however if the hidden sector is an exact copy of the standard model sector, then an enhanced symmetry arises. This symmetry, which can be interpreted as space-time parity, connects each ordinary particle ($e, \ \nu, \ p, \ n, \ \gamma, ....)$ with a mirror partner ($e', \ \nu', \ p', \ n', \ \gamma', ...)$. If this symmetry is completely unbroken, then the mirror particles are degenerate with their ordinary particle counterparts, and would interact amongst themselves with exactly the same dynamics that govern ordinary particle interactions. The only new interaction postulated is photon - mirror photon kinetic mixing, whose strength $\epsilon$, is the sole new fundamental (Lagrangian) parameter relevant for astrophysics and cosmology. It turns out that such a theory, with suitably chosen initial conditions effective in the very early Universe, can provide an adequate description of dark matter phenomena provided that $\epsilon \sim 10^{-9}$. This review focuses on three main developments of this mirror dark matter theory during the last decade: Early universe cosmology, galaxy structure and the application to direct detection experiments.Comment: 130 page

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Section: Type-iii Seesawmentioning

confidence: 99%

Mirror dark matter: Cosmology, galaxy structure and direct detection

Foot

2014

Int. J. Mod. Phys. A

221

266

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“…For the first task, we use baryogenesis via leptogenesis resulting from the decay of heavy Majorana 1 While we only consider G being the standard model gauge group in this paper, it is possible to extend the construction to mirror GUT theories; see, for example, Refs. [42,[46][47][48][49][50]. Such models can be further motivated by the E 8 ⊗ E 8 symmetry of the heterotic string model.…”

Section: Introductionmentioning

confidence: 99%

“…[76] a mirror model that relied on explicit breaking in different Yukawa couplings between the sectors was considered. Similar models have considered simply a common set of singlet neutrinos shared between the sectors [77][78][79]. In Ref.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive asymmetric dark matter model

Lonsdale

Volkas

2018

Phys. Rev. D

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Asymmetric dark matter (ADM) is motivated by the similar cosmological mass densities measured for ordinary and dark matter. We present a comprehensive theory for ADM that addresses the mass density similarity, going beyond the usual ADM explanations of similar number densities. It features an explicit matter-antimatter asymmetry generation mechanism, has one fully worked out thermal history and suggestions for other possibilities, and meets all phenomenological, cosmological and astrophysical constraints. Importantly, it incorporates a deep reason for why the dark matter mass scale is related to the proton mass, a key consideration in ADM models. Our starting point is the idea of mirror matter, which offers an explanation for dark matter by duplicating the standard model with a dark sector related by a Z 2 parity symmetry. However, the dark sector need not manifest as a symmetric copy of the standard model in the present day. By utilizing the mechanism of "asymmetric symmetry breaking" with two Higgs doublets in each sector, we develop a model of ADM where the mirror symmetry is spontaneously broken, leading to an electroweak scale in the dark sector that is significantly larger than that of the visible sector. The weak sensitivity of the ordinary and dark QCD confinement scales to their respective electroweak scales leads to the necessary connection between the dark matter and proton masses. The dark matter is composed of either dark neutrons or a mixture of dark neutrons and metastable dark hydrogen atoms. Lepton asymmetries are generated by the CP-violating decays of heavy Majorana neutrinos in both sectors. These are then converted by sphaleron processes to produce the observed ratio of visible to dark matter in the universe. The dynamics responsible for the kinetic decoupling of the two sectors emerges as an important issue that we only partially solve.

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“…There have been many attempts to solve this problem by introducing the Peccei-Quinn symmetry and axion [2][3][4][5], left-right symmetry [6][7][8][9][10]. These extensions have been discussed with applications to neutrino physics [11], the baryon asymmetry [12,13], the LHC physics [14,15], grand unification [16], flavor physics [17][18][19][20] and DM physics [21,22].…”

Section: Introductionmentioning

confidence: 99%

WIMP dark matter in the parity solution to the strong CP problem

Kawamura

Okawa

Omura

et al. 2019

J. High Energ. Phys.

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We extend the Standard Model (SM) with parity symmetry, motivated by the strong CP problem and dark matter. In our model, parity symmetry is conserved at high energy by introducing a mirror sector with the extra gauge symmetry, SU (2) R × U (1) R . The charges of SU (2) R × U (1) R are assigned to the mirror fields in the same way as in the SM, but the chiralities of the mirror fermions are opposite to respect the parity symmetry. The strong CP problem is resolved, since the mirror quarks are also charged under the SU (3) c in the SM. In the minimal setup, the mirror gauge symmetry leads to stable colored particles which would be inconsistent with the observed data, so that we introduce two scalars in order to deplete the stable colored particles. Interestingly, one of the scalars becomes stable because of the gauge symmetry and therefore can be a good dark matter candidate. We especially study the phenomenology relevant to the dark matter, i.e. thermal relic density, direct and indirect searches for the dark matter. The bounds from the LHC experiment and the Landau pole are also taken into account. As a result, we find that a limited region is viable: the mirror up quark mass is around [600 GeV, 3 TeV] and the relative mass difference between the dark matter and the mirror up quark or electron is about O(1-10 %). We also discuss the neutrino sector and show that the right-handed neutrinos in the mirror sector can increase the effective number of neutrinos or dark radiation by 0.14.

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Mirror symmetry: from active and sterile neutrino masses to baryonic and dark matter asymmetries

Cited by 10 publications

References 180 publications

Mirror dark matter: Cosmology, galaxy structure and direct detection

Mirror dark matter: Cosmology, galaxy structure and direct detection

Comprehensive asymmetric dark matter model

WIMP dark matter in the parity solution to the strong CP problem

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