Lepton-flavored dark matter

Kile, J.; Kobach, Andrew; Soni, Amarjit

doi:10.1016/j.physletb.2015.04.005

Cited by 40 publications

(28 citation statements)

References 71 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Early studies of dark matter charged under L µ − L τ were motivated by the PAMELA positron fraction excess and the anomalous magnetic moment of the muon [46][47][48] and the galactic center excess [49]. Extended L µ − L τ setups have also been explored, containing right-handed neutrinos and additional light scalars [50] or additional gauge bosons [51]. More studies of L µ − L τ models with extended fermion and scalar sectors have been performed in [52,53].…”

Section: Jhep12(2016)106mentioning

confidence: 99%

Explaining dark matter and B decay anomalies with an L μ − L τ model

Altmannshofer

Gori

Profumo

et al. 2016

J. High Energ. Phys.

179

118

View full text Add to dashboard Cite

We present a dark sector model based on gauging the L µ − L τ symmetry that addresses anomalies in b → sµ + µ − decays and that features a particle dark matter candidate. The dark matter particle candidate is a vector-like Dirac fermion coupled to the Z gauge boson of the L µ − L τ symmetry. We compute the dark matter thermal relic density, its pair-annihilation cross section, and the loop-suppressed dark matter-nucleon scattering cross section, and compare our predictions with current and future experimental results. We demonstrate that after taking into account bounds from B s meson oscillations, dark matter direct detection, and the CMB, the model is highly predictive: B physics anomalies and a viable particle dark matter candidate, with a mass of ∼ (5 − 23) GeV, can be accommodated only in a tightly-constrained region of parameter space, with sharp predictions for future experimental tests. The viable region of parameter space expands if the dark matter is allowed to have L µ − L τ charges that are smaller than those of the SM leptons.

show abstract

Section: Jhep12(2016)106mentioning

confidence: 99%

Explaining dark matter and B decay anomalies with an L μ − L τ model

Altmannshofer

Gori

Profumo

et al. 2016

J. High Energ. Phys.

179

118

View full text Add to dashboard Cite

show abstract

“…If one pursues the alternative guiding principle of looking for a connection between DM and matter particles in the SM, one is then led to the possibility that DM itself may transform nontrivially under flavor symmetries. It is therefore worthwhile to consider classes of models with "Flavored Dark Matter" (FDM) [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18], to look for universal features of such models, and to study whether there exist experimental signatures that may be used to distinguish FDM from more traditional models of DM, such as a neutralino in a supersymmetric setup. It is even possible that this line of inquiry may yield new insights in searching for the origin of the SM flavor structure.…”

Section: Introductionmentioning

confidence: 99%

“…The scenario of lepton-flavored DM has been studied in the literature [5,[15][16][17] and shown to have many interesting features, including the possibility of having an asymmetry between the DM and its antiparticle, generated during high-scale leptogenesis. For quark flavored DM, direct detection bounds can be severe if χ is coupled to the light quarks, because tree-level φ exchange leads to a large cross section for χ scattering off of nuclei [5].…”

Section: Introductionmentioning

confidence: 99%

Signatures of top flavored dark matter

Kılıç

Klimek

2015

Phys. Rev. D

View full text Add to dashboard Cite

We study the experimental signatures of top flavored dark matter (top FDM) in direct detection searches and at the LHC. We show that for a dark matter mass above 200 GeV, top FDM can be consistent with current bounds from direct detection experiments and relic abundance constraints. We also show that next generation direct detection experiments will be able to exclude the entire perturbative parameter region for top FDM. For regions of parameter space where the flavor partners of top FDM are not readily produced, the LHC signatures of top FDM are similar to those of other models previously studied in the literature. For the case when the flavor partners are produced at the LHC, we study their impact on a search based on transverse mass variables and find that they diminish the signal significance. However, when the DM flavor partners are split in mass by less than 120-130 GeV, the LHC phenomenology becomes very distinctive through the appearance of displaced vertices. We also propose a strategy by which all parameters of the underlying model can be experimentally determined when the flavor partners can be observed.

show abstract

“…Different flavors carry the same charges under the SM gauge groups, but have different couplings to the Higgs, and so differ in their masses. One interesting possibility, which has been receiving increased attention, is that DM, like the SM matter fields, also comes in three flavors [1][2][3][4][5][6][7][8][9][10][11] or has flavor-specific couplings to the SM [12][13][14][15]. Specific…”

Section: Introductionmentioning

confidence: 99%

A couplet from flavored dark matter

Agrawal

Chacko

Kılıç

et al. 2015

J. High Energ. Phys.

View full text Add to dashboard Cite

We show that a couplet, a pair of closely spaced photon lines, in the X-ray spectrum is a distinctive feature of lepton flavored dark matter models for which the mass spectrum is dictated by Minimal Flavor Violation. In such a scenario, mass splittings between different dark matter flavors are determined by Standard Model Yukawa couplings and can naturally be small, allowing all three flavors to be long-lived and contribute to the observed abundance. Then, in the presence of a tiny source of flavor violation, heavier dark matter flavors can decay via a dipole transition on cosmological timescales, giving rise to three photon lines. Two of these lines are closely spaced, and constitute the couplet. Provided the flavor violation is sufficiently small, the ratios of the line energies are determined in terms of the charged lepton masses, and constitute a prediction of this framework. For dark matter masses of order the weak scale, the couplet lies in the keV-MeV region, with a much weaker line in the eV-keV region. This scenario constitutes a potential explanation for the recent claim of the observation of a 3.5 keV line. The next generation of X-ray telescopes may have the necessary resolution to resolve the double line structure of such a couplet.

show abstract

Lepton-flavored dark matter

Abstract: 2016-11-02T18:49:00

Cited by 40 publications

References 71 publications

Explaining dark matter and B decay anomalies with an L μ − L τ model

Explaining dark matter and B decay anomalies with an L μ − L τ model

Signatures of top flavored dark matter

A couplet from flavored dark matter

Contact Info

Product

Resources

About