Simplified models vs. effective field theory approaches in dark matter searches

Simone, Andrea De; Jacques, Thomas

doi:10.1140/epjc/s10052-016-4208-4

Cited by 104 publications

(118 citation statements)

References 373 publications

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“…Our results can be easily generalized to Majorana fermions [5]), whose interactions with the SM occur via a pseudoscalar mediator a [4,[20][21][22][23][24], namely…”

Section: Simplified Pseudoscalar Portal For Dark Mattermentioning

confidence: 85%

“…We stress that the loop-induced background and the multi-jet merging signal and background were not accounted for by the experimental analyses so far, and have been shown to be important in related analyses. 5 For this reason, we have resorted to the full Monte Carlo machinery carefully presented in Refs. [55,56] for a more robust prediction.…”

Section: Lhc Phenomenology: Mono-z Searchesmentioning

confidence: 99%

“…The complementarity of different DM search avenues plays a very important role in the exploration of DM properties, and thus approaches which allow to fully exploit such complementarity have received a great deal of attention [3][4][5][6][7][8]. The leading two such approaches are effective field theories (EFTs) and DM simplified models.…”

Section: Introductionmentioning

confidence: 99%

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Simplified models for dark matter face their consistent completions

2017

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Reprinted with permission from the American Physical Society: Physical Review D 95, 055027 c (2017) by the American Physical Society. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modied, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society.Additional information: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. Simplified dark matter models have been recently advocated as a powerful tool to exploit the complementarity between dark matter direct detection, indirect detection and LHC experimental probes. Focusing on pseudoscalar mediators between the dark and visible sectors, we show that the simplified dark matter model phenomenology departs significantly from that of consistent SUð2Þ L × Uð1Þ Y gauge invariant completions. We discuss the key physics that simplified models fail to capture, and its impact on LHC searches. Notably, we show that resonant mono-Z searches provide competitive sensitivities to standard mono-jet analyses at 13 TeV LHC.

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“…Our results can be easily generalized to Majorana fermions [5]), whose interactions with the SM occur via a pseudoscalar mediator a [4,[20][21][22][23][24], namely…”

Section: Simplified Pseudoscalar Portal For Dark Mattermentioning

confidence: 85%

Section: Lhc Phenomenology: Mono-z Searchesmentioning

confidence: 99%

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Simplified models for dark matter face their consistent completions

2017

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“…We remain agnostic about its UV origin and keep our analysis general by working within a simplified model framework (for a recent review see ref. [27]). This allows us to study DM phenomenology in terms of a handful of masses and couplings [28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45] (with the further advantage of having the mediator in the spectrum) and allows us to combine mono-jet searches with complementary searches for resonances or mono-V events [46][47][48].…”

Section: Simplified Models For Vector Mediatorsmentioning

confidence: 99%

You can hide but you have to run: direct detection with vector mediators

DʼEramo

Kavanagh

Panci

2016

J. High Energ. Phys.

124

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We study direct detection in simplified models of Dark Matter (DM) in which interactions with Standard Model (SM) fermions are mediated by a heavy vector boson. We consider fully general, gauge-invariant couplings between the SM, the mediator and both scalar and fermion DM. We account for the evolution of the couplings between the energy scale of the mediator mass and the nuclear energy scale. This running arises from virtual effects of SM particles and its inclusion is not optional. We compare bounds on the mediator mass from direct detection experiments with and without accounting for the running. In some cases the inclusion of these effects changes the bounds by several orders of magnitude, as a consequence of operator mixing which generates new interactions at low energy. We also highlight the importance of these effects when translating LHC limits on the mediator mass into bounds on the direct detection cross section. For an axial-vector mediator, the running can alter the derived bounds on the spin-dependent DM-nucleon cross section by a factor of two or more. Finally, we provide tools to facilitate the inclusion of these effects in future studies: general approximate expressions for the low energy couplings and a public code runDM to evolve the couplings between arbitrary energy scales.

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“…From early applications in the Heisenberg-Euler action of QED [3], the Fermi theory of weak interactions [4], or the chiral Lagrangian of pions [5][6][7], the framework has since been used to describe neutrino [8], nuclear [9], flavour [10], electroweak [11] and Higgs physics [12], to name a few examples. More recent developments include EFTs for dark matter [13], inflation [14] and cosmology [15], as well as the Standard Model EFT (SM EFT) [12,16,17].…”

Section: Introductionmentioning

confidence: 99%

Extending the Universal One-Loop Effective Action: heavy-light coefficients

Ellis

Quevillon

You

et al. 2017

J. High Energ. Phys.

115

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The Universal One-Loop Effective Action (UOLEA) is a general expression for the effective action obtained by evaluating in a model-independent way the one-loop expansion of a functional path integral. It can be used to match UV theories to their low-energy EFTs more efficiently by avoiding redundant steps in the application of functional methods, simplifying the process of obtaining Wilson coefficients of operators up to dimension six. In addition to loops involving only heavy fields, matching may require the inclusion of loops containing both heavy and light particles. Here we use the recentlydeveloped covariant diagram technique to extend the UOLEA to include heavy-light terms which retain the same universal structure as the previously-derived heavy-only terms. As an example of its application, we integrate out a heavy singlet scalar with a linear coupling to a light doublet Higgs. The extension presented here is a first step towards completing the UOLEA to incorporate all possible structures encountered in a covariant derivative expansion of the one-loop path integral.

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Simplified models vs. effective field theory approaches in dark matter searches

Cited by 104 publications

References 373 publications

Simplified models for dark matter face their consistent completions

Simplified models for dark matter face their consistent completions

You can hide but you have to run: direct detection with vector mediators

Extending the Universal One-Loop Effective Action: heavy-light coefficients

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