Self-interacting Dark Matter via Right Handed Neutrino Portal

Borah, Debasish; Dutta, Manoranjan; Mahapatra, Satyabrata; Sahu, Narendra

doi:10.48550/arxiv.2110.00021

Cited by 3 publications

(3 citation statements)

References 85 publications

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“…To add to the complementarity, such dark U (1) D gauge symmetry can also lead to a first order phase transition in the early universe with observational consequences [134][135][136][137][138][139][140]. 13 Some recent works in the direction of self-interacting DM in U (1) D model can be found in [131][132][133].…”

Section: Possible Uv Completion Of the Dark Sectormentioning

confidence: 99%

Non-thermal Origin of Asymmetric Dark Matter from Inflaton and Primordial Black Holes

Barman,

Borah,

Das

et al. 2021

Preprint

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We study the possibility of cogenesis of baryon and dark matter (DM) from the out-of-equilibrium CP violating decay of right handed neutrino (RHN) that are dominantly of non-thermal origin.While the RHN and its heavier partners can take part in light neutrino mass generation via Type-I seesaw mechanism, the decay of RHN into dark and visible sectors can create respective asymmetries simultaneously. The non-thermal sources of RHN considered are (a) on-shell decay of inflaton, and (b) evaporation of ultralight primordial black holes (PBH). After setting up the complete set of Boltzmann equations in both these scenarios, we constrain the resulting parameter space of the particle physics setup, along with inflaton and PBH sectors from the requirement of generating correct (asymmetric) DM abundance and baryon asymmetry, while being in agreement with other relevant cosmological bounds. Scenario (a) links the common origin of DM and baryon asymmetry to post-inflationary reheating via RHNs produced in inflaton decay, whereas in scenario (b) we find enhancement of baryon and DM abundance, compared to the purely thermal scenarios, in presence of PBH with appropriate mass and initial fraction. Although the minimal setup itself is very predictive with observational consequences, details of the UV completion of the dark sector can offer several complementary probes.

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Section: Possible Uv Completion Of the Dark Sectormentioning

confidence: 99%

Non-thermal Origin of Asymmetric Dark Matter from Inflaton and Primordial Black Holes

Barman,

Borah,

Das

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…Another pathway is assuming the right-hand neutrinos N as the messenger between the dark sector and standard model [16][17][18][19][20][21][22][23][24][25][26][27]. With sizable coupling between DM and N , sufficient annihilation rate of DM into N N pairs is viable.…”

Section: Introductionmentioning

confidence: 99%

Sterile Neutrino Portal Dark Matter in $ν$THDM

Liu¹,

Shao²,

Han³

et al. 2022

Preprint

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In this paper, we propose the sterile neutrino portal dark matter in νTHDM. This model can naturally generate tiny neutrino mass with the neutrinophilic scalar doublet Φ ν and sterile neutrinos N around TeV scale. Charged under a Z 2 symmetry, one Dirac fermion singlet χ and one scalar singlet φ are further introduced in the dark sector. The sterile neutrinos N are the mediators between the DM and SM. Depending on the coupling strength, the DM can be either WIMP or FIMP. For the WIMP scenario, pair annihilation of DM into N N is the key channel to satisfy various bounds, which could be tested at indirect detection experiments. For the FIMP scenario, besides the direct production of DM from freeze-in mechanism, contributions from late decay of NLSP is also important. When sterile neutrinos are heavier than the dark sector, NLSP is long-lived due to tiny mixing angle between sterile and light neutrinos. Constrains from free-streaming length, CMB, BBN and neutrino experiments are considered.

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“…Optimistically one can assume that there exists some coupling of this light BSM mediator with some SM mediator which can be probed at direct search experiments [20,21]. Several model building efforts have been made to realise such scenarios, see [22][23][24][25][26][27][28][29][30] and references therein. However, due to sizeable O(1) coupling between SIDM and the light mediator, the SIDM annihilates very 1 arXiv:2310.03909v1 [hep-ph] 5 Oct 2023 efficiently into light mediators via t-channel annihilation and its thermal relic becomes under-abundant.…”

Section: Introductionmentioning

confidence: 99%

The Role of Non-Governmental Organizations in Protection and Promotion of Child Rights in the North Lakhimpur Sub-Division of Lakhimpur District of Assam

Dutta*

2020

IJRTE

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‘Child Rights’ refers to those human rights which are very essential for all-round development of a child. These rights are fundamental rights which make their life meaningful. However, in today’s world all children do not enjoy their rights equally. Among all sections of people children are the most neglected, exploited and vulnerable to almost all forms of social evils. In the developing countries of the world problems relating to children like infanticide, child marriage, child trafficking, child labour, child prostitution, drug addicted children etc. are very severe. As a developing country India has also been struggling with similar problems. In the North Eastern state of Assam also problems relating to children is seen almost in all parts of the state. Efforts are being made by the government and several other agencies to protect and promote the rights of children. The present study is an attempt to evaluate the role of Non-Governmental Organizations in protection and promotion of child rights. The study was carried out in North Lakhimpur Sub-Division of Lakhimpur District of Assam State. The study is based on both theoretical and empirical data. The methodology used for the study was in-depth interview through both Qualitative and Quantitative Research techniques. The study assumes significance as it intends to highlight the ground reality of the functioning of Non-Governmental Organizations in the study area

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Self-interacting Dark Matter via Right Handed Neutrino Portal

Cited by 3 publications

References 85 publications

Non-thermal Origin of Asymmetric Dark Matter from Inflaton and Primordial Black Holes

Non-thermal Origin of Asymmetric Dark Matter from Inflaton and Primordial Black Holes

Sterile Neutrino Portal Dark Matter in $ν$THDM

The Role of Non-Governmental Organizations in Protection and Promotion of Child Rights in the North Lakhimpur Sub-Division of Lakhimpur District of Assam

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