Flavoured Dark Matter moving left

Blanke, Monika; Das, Surajit; Kast, Simon

doi:10.1007/jhep02(2018)105

Cited by 23 publications

(47 citation statements)

References 64 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this work we make the choice Y X = 1/3 for phenomenological reasons; coupling to right-handed down quarks allows for interesting effects in flavour observables, for example in B decays, while keeping the flavour structure as simple as possible. In the absence of dark gauge interactions, similar couplings were studied before in the context of flavoured DM [28,30,31]. Using singular value decomposition, the matrix κ can be written as…”

Section: The Modelmentioning

confidence: 99%

A flavoured dark sector

Renner

Schwaller

2018

J. High Energ. Phys.

100

View full text Add to dashboard Cite

Abstract:We explore the phenomenology of a QCD-like dark sector which confines around the GeV scale. The dark sector inherits a flavour structure from a coupling between dark quarks and SM quarks via a heavy mediator, which leads to exciting new phenomena. While stable baryonic bound states are the dark matter candidates, the phenomenology is dominated by the lightest composite mesons, the dark pions, which can have decay lengths ranging from millimetres to hundreds of meters. For masses below 1.5 GeV, their exclusive decays to SM mesons are calculated for the first time by matching both dark and visible sectors to a chiral Lagrangian. Constraints from big bang nucleosynthesis, dark matter direct detection and flavour single out a small region of allowed parameter space for dark pion masses below 5 GeV. It is best probed by the fixed target experiments NA62 and SHiP, where dark pions can be produced copiously in rare decays like B → Kπ D . The dominant π D → K ± π ∓ and π D → 3π decay modes are a smoking gun for a CP-odd, flavour violating new resonance. Heavier dark pions are best searched for at the LHC, where they decay after hadronisation to produce jets which emerge into SM states within the detector. Here the flavour structure ensures different flavours emerge on different length scales, leading to a striking new feature in the emerging jets signature.

show abstract

Section: The Modelmentioning

confidence: 99%

A flavoured dark sector

Renner

Schwaller

2018

J. High Energ. Phys.

100

View full text Add to dashboard Cite

show abstract

“…Γ χ→ t is understood to contain the conversion into both the mediator and its anti-particle which leads to the factor of two in front of the sums in Eqs. (14) and (15). In the last line we used Γ χ→ t Y eq χ = Γ t→χ Y eq t to rewrite the conversion rate such that it contains two-body initial states only, which turns out to be more convenient for numerical evaluation.…”

Section: Boltzmann Equation and Conversion Ratementioning

confidence: 99%

Top-philic dark matter within and beyond the WIMP paradigm

Garny

Heisig

Hufnagel³

et al. 2018

Phys. Rev. D

View full text Add to dashboard Cite

We present a comprehensive analysis of top-philic Majorana dark matter that interacts via a colored t-channel mediator. Despite the simplicity of the model-introducing three parameters only-it provides an extremely rich phenomenology allowing us to accommodate the relic density for a large range of coupling strengths spanning over 6 orders of magnitude. This model features all "exceptional" mechanisms for dark matter freeze-out, including the recently discovered conversion-driven freeze-out mode, with interesting signatures of long-lived colored particles at colliders. We constrain the cosmologically allowed parameter space with current experimental limits from direct, indirect and collider searches, with special emphasis on light dark matter below the top mass. In particular, we explore the interplay between limits from Xenon1T, Fermi-LAT and AMS-02 as well as limits from stop, monojet and Higgs invisible decay searches at the LHC. We find that several blind spots for light dark matter evade current constraints. The region in parameter space where the relic density is set by the mechanism of conversion-driven freeze-out can be conclusively tested by R-hadron searches at the LHC with 300 fb −1 .

show abstract

“…Let us now show how some of the flavor models involving dark sectors present in the literature can be mapped to our formalism. We start with the situation considered in References [35,50,51], which can be summarized via the interactions…”

Section: B Eft Generated In Specific Modelsmentioning

confidence: 99%

“…The purpose of this paper is to extend the analysis of the running and mixing of the dark sector EFT operators supposing the mediator to be heavy and flavorful. Such a mediator has already been considered in the framework of flavored Dark Matter (see for instance [24][25][26][27][28][29][30][31][32][33][34][35][36][37]), but the running of the EFT has never been considered before. We keep our analysis as general as possible, without committing to a specific dark sector or requiring Dark Matter to be present.…”

Section: Introductionmentioning

confidence: 99%

Operators from flavored dark sectors running to low energy

et al. 2019

View full text Add to dashboard Cite

We consider the effective field theory generated by a heavy mediator that connects Standard Model particles to a Dark Sector, considering explicitly the flavor structure of the operators. In particular, we study the model independent running and mixing between operators, as well as their matching at the electroweak scale. In addition to the explicit expression of the Renormalization Group Equations, we show the numerical solutions as well as some approximate analytical expressions that help understanding these solutions. At low energy, our results are particularly important in the case of light dark sectors communicating to the b quark, and can be immediately applied to flavored Dark Matter.

show abstract

Flavoured Dark Matter moving left

Cited by 23 publications

References 64 publications

A flavoured dark sector

A flavoured dark sector

Top-philic dark matter within and beyond the WIMP paradigm

Operators from flavored dark sectors running to low energy

Contact Info

Product

Resources

About