Baryogenesis and asymmetric dark matter from the left–right mirror symmetric model

Yang, Weimin

doi:10.1016/j.nuclphysb.2014.06.002

Cited by 7 publications

(5 citation statements)

References 70 publications

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“…Ref. [73,74] also invokes the case of WIMP scalar DM protected by the continuous global symmetry, but once again, as we see in the left panel of Fig. 2, the entire corresponding WIMP mass range is excluded.…”

Section: Left-right Modelmentioning

confidence: 90%

“…As a result, the model described in Ref. [73,74] does not appear to have a plausible DM candidate. Unless the invoked continuous global symmetry can be replaced by a Z N discrete symmetry of some sort, the model is strongly disfavored by data.…”

Section: Left-right Modelmentioning

confidence: 94%

“…We consider the left-right mirror symmetric model with the continuous global symmetry U (1) B−L ⊗ U (1) X of Ref. [73,74]. There, the continuous global symmetry prohibits the term LHψ R , where ψ is a fermionic DM candidate.…”

Section: Left-right Modelmentioning

confidence: 99%

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Dark matter and global symmetries

2016

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General considerations in general relativity and quantum mechanics are known to potentially rule out continuous global symmetries in the context of any consistent theory of quantum gravity. Assuming the validity of such considerations, we derive stringent bounds from gamma-ray, X-ray, cosmic-ray, neutrino, and CMB data on models that invoke global symmetries to stabilize the dark matter particle. We compute up-to-date, robust model-independent limits on the dark matter lifetime for a variety of Planck-scale suppressed dimension-five effective operators. We then specialize our analysis and apply our bounds to specific models including the Two-Higgs-Doublet, Left-Right, Singlet Fermionic, Zee-Babu, 3-3-1 and Radiative See-Saw models. Assuming that (i) global symmetries are broken at the Planck scale, that (ii) the non-renormalizable operators mediating dark matter decay have O(1) couplings, that (iii) the dark matter is a singlet field, and that (iv) the dark matter density distribution is well described by a NFW profile, we are able to rule out fermionic, vector, and scalar dark matter candidates across a broad mass range (keV-TeV), including the WIMP regime.

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Section: Left-right Modelmentioning

confidence: 90%

Section: Left-right Modelmentioning

confidence: 94%

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Dark matter and global symmetries

2016

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“…The observed large scale structure of our Universe requires the DM particle to be long-lived only on a cosmological time scale, and the possibility that the DM decays with a lifetime much larger than the age of the Universe is thus not JCAP09(2022)005 inconceivable [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32]. It is a likely proposition that the long-lived nature of the DM candidate is due to some continuous global symmetry [33][34][35]. Such a symmetry is liable to be broken at some level, albeit by a minuscule amount, thus causing extremely slow decays of the DM particle [28,36,37].…”

Section: Introductionmentioning

confidence: 99%

A general study of decaying scalar dark matter: existing limits and projected radio signals at the SKA

Dutta¹,

Ghosh²,

Kar³

et al. 2022

J. Cosmol. Astropart. Phys.

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We consider a decaying scalar dark matter (DM) with mass m χ in the range 10 GeV – 10 TeV and vary the branching ratios of all possible two-body SM final states (excluding and including νν̅) in the range 0%-100% to derive constraints on the total decay width Γ using the data collected by several astrophysical and cosmological observations. We find that, Γ ≲ 10-26 - 10-27 s-1 (excluding νν̅) and Γ ≲ 10-24 - 10-26 s-1 (including νν̅) are allowed, depending on the values of m χ, which are most robust upper limits on Γ for a generic decaying scalar DM. We then investigate the prospect of the upcoming Square Kilometre Array (SKA) radio telescope in detecting the DM decay induced radio signals originating inside the dwarf spheroidal (dSph) galaxies. We have classified the DM parameter space, allowed by the existing observations, independently of the branching ratio of each individual two-body SM final state, based on the detectability at the SKA. Excluding the νν̅ decay mode, we find that, throughout the DM mass range considered, Γ ≳ 10-30 s-1 - 10-29 s-1 is detectable for all possible branching ratio combinations at the SKA (assuming 100 hours of observation time), with conservative choices for the relevant astrophysical parameters. On the other hand, when arbitrary branching ratios are allowed also for the νν̅ decay mode, DM decays can be probed independently of the branching ratio of each SM final state for Γ ≳ 2 × 10-29 s-1, provided DM masses are greater than a few hundreds of GeV.

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“…The observed large scale structure of our Universe requires the DM particle to be long-lived only on a cosmological time scale, and the possibility that the DM decays with a lifetime much larger than the age of the Universe is thus not inconceivable [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32]. It is a likely proposition that the long-lived nature of the DM candidate is due to some continuous global symmetry [33][34][35]. Such a symmetry is liable to be broken at some level, albeit by a minuscule amount, thus causing extremely slow decays of the DM particle [27,36,37].…”

Section: Introductionmentioning

confidence: 99%

A general study of decaying scalar dark matter: existing limits and projected radio signals at the SKA

Dutta¹,

Ghosh²,

Kar³

et al. 2022

Preprint

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We consider a decaying scalar dark matter (DM) with mass m χ in the range 10 GeV -10 TeV and vary the branching ratios of all possible two-body SM final states (excluding and including ν ν) in the range 0% − 100% to derive constraints on the total decay width Γ by combining the data collected by several astrophysical and cosmological observations. We find that, Γ 10 −26 − 10 −27 s −1 (excluding ν ν) and Γ 10 −24 − 10 −26 s −1 (including ν ν) are allowed, depending on the values of m χ , which are most robust upper limits on Γ for a generic decaying scalar DM. We then investigate the prospect of the upcoming Square Kilometer Array (SKA) radio telescope in detecting the DM decay induced radio signals originating inside the dwarf spheroidal (dSph) galaxies. We have classified the DM parameter space, allowed by the existing observations, independently of the branching ratio in each individual two-body SM final state, based on the detectability at the SKA. Excluding the ν ν decay mode, we find that, throughout the DM mass range 10 GeV -10 TeV, Γ > ∼ 10 −30 s −1 − 10 −29 s −1 is detectable for all possible branching ratio combinations at the SKA (for 100 hours of observation time), with conservative choices for the relevant astrophysical parameters. On the other hand, when arbitrary branching ratios are allowed also for the ν ν decay mode, DM decays can be probed model-independently for Γ > ∼ 2 × 10 −29 s −1 provided DM masses are greater than a few hundreds of GeV.

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Baryogenesis and asymmetric dark matter from the left–right mirror symmetric model

Cited by 7 publications

References 70 publications

Dark matter and global symmetries

Dark matter and global symmetries

A general study of decaying scalar dark matter: existing limits and projected radio signals at the SKA

A general study of decaying scalar dark matter: existing limits and projected radio signals at the SKA

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