Tools for model-independent bounds in direct dark matter searches

We extend the Standard Model with an EW fermion triplet, stable thanks to one of the accidental symmetries already present in the theory. On top of being a potential Dark Matter candidate, additional motivations for this new state are the stability of the vacuum, the fact it does not introduce a large fine-tuning in the Higgs mass, and that it helps with gauge coupling unification. We perform an analysis of the reach for such a particle at the high-luminosity Lhc, and at a futuristic 100 TeV pp collider. We do so for the monojet, monophoton, vector boson fusion and disappearing tracks channels. At 100 TeV, disappearing tracks will likely probe the mass region of 3 TeV, relevant for thermally produced Dark Matter. The reach of the other channels is found to extend up to ∼ 1.3 (1.7) TeV for 3 (30) ab −1 of integrated luminosity, provided systematics are well under control. This model also constitutes a benchmark of a typical WIMP Dark Matter candidate, and its phenomenology reproduces that of various models of Supersymmetry featuring a pure Wino as the lightest sparticle.

Section: Jhep10(2014)033mentioning

confidence: 99%

Measurement of beauty and charm production in deep inelastic scattering at HERA and measurement of the beauty-quark mass

Abramowicz¹,

Abt²,

Adamczyk³

et al. 2014

“…The couplings are determined in the standard way by embedding the quarks within the nucleon, as reviewed in ref. [49]:…”

Section: Jhep08(2016)111mentioning

confidence: 99%

“…[49]. 3 Calculation of the expected rate in the LUX experiment [58] is detailed in Addendum 1 of ref.…”

Section: Jhep08(2016)111mentioning

confidence: 99%

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

DʼEramo

Kavanagh

Panci

2016

Self Cite

124

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.

“…dominated by LUX data [48,50]. This bound assumes that techni-baryons constitute all galactic DM, and must be rescaled otherwise.…”

Section: Jhep01(2015)157mentioning

confidence: 99%

“…We thank Roberto Contino, Riccardo Rattazzi, Slava Rychkov, Riccardo Torre for advice about strong dynamics and the authors of [50] (in particular Eugenio del Nobile) for help about using their code. The work of OA and MR is supported by the MIUR-FIRB grant RBFR12H1MW.…”

Section: Acknowledgmentsmentioning

confidence: 99%

Dynamical generation of the weak and Dark Matter scales from strong interactions

Antipin

Redi

Струмиа

2015

Assuming that mass scales arise in nature only via dimensional transmutation, we extend the dimension-less Standard Model by adding vector-like fermions charged under a new strong gauge interaction. Their non-perturbative dynamics generates a mass scale that is transmitted to the elementary Higgs boson by electro-weak gauge interactions. In its minimal version the model has the same number of parameters as the Standard Model, predicts that the electro-weak symmetry gets broken, predicts new-physics in the multi-TeV region and is compatible with all existing bounds, provides two Dark Matter candidates stable thanks to accidental symmetries: a composite scalar in the adjoint of SU(2) L and a composite singlet fermion; their thermal relic abundance is predicted to be comparable to the measured cosmological DM abundance. Some models of this type allow for extra Yukawa couplings; DM candidates remain even if explicit masses are added.