# Dark Matter EFT, the Third -- Neutrino WIMPs

### Submission summary

 As Contributors: Ingolf Bischer · Tilman Plehn Arxiv Link: https://arxiv.org/abs/2008.04718v2 (pdf) Date accepted: 2021-02-15 Date submitted: 2020-12-18 11:06 Submitted by: Bischer, Ingolf Submitted to: SciPost Physics Academic field: Physics Specialties: High-Energy Physics - Phenomenology Approaches: Theoretical, Phenomenological

### Abstract

Sterile neutrinos coupling only to third-generation fermions are attractive dark matter candidates. In an EFT approach we demonstrate that they can generate the observed relic density without violating constraints from direct and indirect detection. Such an EFT represents a gauged third-generation $B-L$ model, as well as third-generation scalar or vector leptoquarks. LHC measurements naturally distinguish the different underlying models.

Published as SciPost Phys. 10, 039 (2021)

### List of changes

- Direct detection constraints on Dirac DM have been recalculated employing the more recent results from XENON1T.
- The assumptions made when calculating direct detection and indirect detection constraints have been clarified, namely saturated relic density, and how to interpret the plots. Figures 1 and 3 now show over- and underdensity equally.
- More emphasize is put on the fact that the relic density, direct detection and indirect detection constraints are consistently described by the dimension-6 level EFT in our considered parameter space and that effects of higher-order operators turn out negligible.
- The form of the non-relativistic operator O1 and its role in generating spin-independent scattering has been clarified.
- The contextualisation within the existing body of literature on DMEFTs has been expanded in the introduction.
- Comments in the conclusions on how we envision the use of the third-generation DMEFT have been added.
- The equivalence between the nuDMEFT with the assumptions made in the manuscript and usual DMEFT has been pointed out more prominently.
- Comments on the possibility to relax constraints by considering multiple operators have been added.
- Comments and references addressing the consistency of the models with the SM flavor structure have been added.
- The NR operators for direct detection generated in the case of Majorana DM have been corrected to numbers 4, 8 and 9 from 5, 9, and 10.

### Submission & Refereeing History

Resubmission 2008.04718v2 on 18 December 2020
Submission 2008.04718v1 on 18 September 2020

## Reports on this Submission

### Anonymous Report 2 on 2021-1-30 (Invited Report)

• Cite as: Anonymous, Report on arXiv:2008.04718v2, delivered 2021-01-30, doi: 10.21468/SciPost.Report.2479

### Report

The rather unspecific list of changes makes it difficult to assess in detail whether all my comments have been addressed. However, I have no reason to believe that they haven't and therefore recommend the paper for publication.

• validity: -
• significance: -
• originality: -
• clarity: -
• formatting: -
• grammar: -

### Report 1 by Hai-Bo Yu on 2020-12-22 (Invited Report)

• Cite as: Hai-Bo Yu, Report on arXiv:2008.04718v2, delivered 2020-12-22, doi: 10.21468/SciPost.Report.2327

### Report

In the revised draft, the authors have addressed all my comments. The work meets one of the expectations, i.e., "Present a breakthrough on a previously-identified and long-standing research stumbling block."

It also meets all the general acceptance criteria.

• validity: -
• significance: -
• originality: -
• clarity: -
• formatting: -
• grammar: -