A 750 GeV portal: LHC phenomenology and dark matter candidates

DʼEramo, Francesco; Vries, Jordy de; Panci, Paolo

doi:10.1007/jhep05(2016)089

Cited by 44 publications

(51 citation statements)

References 144 publications

(211 reference statements)

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“…where v E is the DM velocity in the Earth frame, E R is the recoil energy and F em is the electromagnetic form factor [289]. For definiteness we have considered a scalar field e with the same quantum numbers as of the right-handed charged leptons (the assumptions on the flavor structure of the couplings with the DM are the same as stated at the beginning of the section).…”

Section: T-channel Portalsmentioning

confidence: 99%

The waning of the WIMP? A review of models, searches, and constraints

et al. 2018

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Weakly Interacting Massive Particles (WIMPs) are among the best-motivated dark matter candidates. No conclusive signal, despite an extensive search program that combines, often in a complementary way, direct, indirect, and collider probes, has been detected so far. This situation might change in near future due to the advent of one/multi-TON Direct Detection experiments. We thus, find it timely to provide a review of the WIMP paradigm with focus on a few models which can be probed at best by these facilities. Collider and Indirect Detection, nevertheless, will not be neglected when they represent a complementary probe.

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Section: T-channel Portalsmentioning

confidence: 99%

The waning of the WIMP? A review of models, searches, and constraints

et al. 2018

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“…An interesting speculative possibility is that a dominant or substantial width of S is into Dark Matter particles (see also [62][63][64][65][66][67][68][69]). This can be realised by identifying one of the Q…”

Section: Decays Into Dark Matter?mentioning

confidence: 99%

What is the γγ resonance at 750 GeV?

Franceschini

Giudice

Kamenik

et al. 2016

J. High Energ. Phys.

229

396

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Run 2 LHC data show hints of a new resonance in the diphoton distribution at an invariant mass of 750 GeV. We analyse the data in terms of a new boson, extracting information on its properties and exploring theoretical interpretations. Scenarios covered include a narrow resonance and, as preliminary indications suggest, a wider resonance. If the width indications persist, the new particle is likely to belong to a strongly-interacting sector. We also show how compatibility between Run 1 and Run 2 data is improved by postulating the existence of an additional heavy particle, whose decays are possibly related to dark matter.

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“…This RG Evolution (RGE) typically introduces mixing between different DM-SM interactions, affecting the size of couplings, or even inducing new couplings which do not appear in a naïve comparison [11][12][13][14][15][16][17][18][19][20][21][22][23]. These effects do not depend on the properties of the Dark Sector and are not optional; they arise solely from RGE of the couplings via SM loops.…”

Section: Jhep08(2016)111mentioning

confidence: 99%

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

DʼEramo

Kavanagh

Panci

2016

J. High Energ. Phys.

Self Cite

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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A 750 GeV portal: LHC phenomenology and dark matter candidates

Cited by 44 publications

References 144 publications

The waning of the WIMP? A review of models, searches, and constraints

The waning of the WIMP? A review of models, searches, and constraints

What is the γγ resonance at 750 GeV?

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

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