Classification of effective operators for interactions between the Standard Model and dark matter

Duch, Mateusz; Grza̧dkowski, Bohdan; Wudka, José

doi:10.1007/jhep05(2015)116

Cited by 47 publications

(47 citation statements)

References 42 publications

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“…In that case, it suffices to consider an exchange of h 1 and h 2 only. We note that earlier phenomenological analyses of vector dark matter have appeared in various contexts [12]- [21]. The current collider searches for dark matter, e.g.…”

Section: Dark Matter Phenomenologymentioning

confidence: 81%

Non-Abelian gauge fields as dark matter

Groß

Lebedev

Mambrini

2015

J. High Energ. Phys.

134

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SU(N) Lie algebras possess discrete symmetries which can lead naturally to stable vector dark matter (DM). In this work, we consider the possibility that the dark SU(N) sector couples to the visible sector through the Higgs portal. We find that minimal CP-conserving hidden "Higgs sectors" entail stable massive gauge fields which fall into the WIMP category of dark matter candidates. For SU(N), N > 2, DM consists of three components, two of which are degenerate in mass. In all of the cases, there are substantial regions of parameter space where the direct and indirect detection as well as relic abundance constraints are satisfied.

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Section: Dark Matter Phenomenologymentioning

confidence: 81%

Non-Abelian gauge fields as dark matter

Groß

Lebedev

Mambrini

2015

J. High Energ. Phys.

134

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“…(10,11) represent the most general D=6,8 contributions to 2 → 2 on-shell scattering at D ≤ 8 (for D=6 see also [47]). Other structures either violate underlying symmetries or can be eliminated as described in the scalar case above.…”

Section: Fermionic Dark Mattermentioning

confidence: 99%

Strongly Interacting Light Dark Matter

2017

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We discuss a class of Dark Matter (DM) models that, although inherently strongly coupled, appear weakly coupled at small-energy and fulfill the WIMP miracle, generating a sizable relic abundance through the standard freeze-out mechanism. Such models are based on approximate global symmetries that forbid relevant interactions; fundamental principles, like unitarity, restrict these symmetries to a small class, in such a way that the leading interactions between DM and the Standard Model are captured by effective operators up to dimension-8. The underlying strong coupling implies that these interactions become much larger at high-energy and represent an interesting novel target for LHC missing-energy searches.

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“…The absence of information on the interactions of the dark sector with the SM, indicates that a model-independent study of these interactions will be useful in understanding the effects of the various possible couplings, and of the processes that generate them; (see, for example, [11][12][13][14][15]). We will follow such an approach by using an effective Lagrangian to parametrize the interactions of the dark sector with the SM, and determine the restrictions imposed by the above constraints.…”

Section: Introductionmentioning

confidence: 99%

Effective theories for Dark Matter interactions and the neutrino portal paradigm

Macías

Wudka

2015

J. High Energ. Phys.

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In this article we discuss a general effective-theory description of a multicomponent dark sector with an unspecified non-trivial symmetry and its interactions with the Standard Model generated by the exchange of heavy mediators. We then categorize the relevant effective operators given the current experimental sensistivity where the underlying theory is weakly coupled and renormalizable, with neutral mediators: either scalars or fermions. An interesting scenario resulting from this categorization is the neutrino portal, where only fermion mediators are present, and where the dark sector consists of fermions and scalars such that the lightest dark particle is a fermion, this scenario is characterized by having naturally suppressed couplings of the DM to all SM particles except the neutrinos and has received little attention in the literature. We find that there is a wide region in parameter space allowed by the current experimental constraints (relic abundance, direct and indirect detection limits); the cleanest signature of this paradigm is the presence of monochromatic neutrino lines with energy equal to that of the DM mass, but experimental sensitivity would have to be improved significantly before this can be probed.

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Classification of effective operators for interactions between the Standard Model and dark matter

Cited by 47 publications

References 42 publications

Non-Abelian gauge fields as dark matter

Non-Abelian gauge fields as dark matter

Strongly Interacting Light Dark Matter

Effective theories for Dark Matter interactions and the neutrino portal paradigm

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