Simplified TeV leptophilic dark matter in light of DAMPE data

Duan, Guang Hua; Liu, Feng; Wang, Fei; Wu, Lei; Yang, Jin Min; Zheng, Rui

doi:10.1007/jhep02(2018)107

Cited by 30 publications

(23 citation statements)

References 68 publications

(50 reference statements)

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“…Though statistically insignificant yet, such a sharp excess of electrons and positrons in the cosmic rays still leads people to wonder if they may come from the annihilation of dark matter (DM) in a nearby subhalo. In particular, quite a few works propose DM models involving a new leptophilic interaction [2][3][4][5][6][7][8][9][10][11][12]. A model-independent analysis regarding which type of DM model to fit data and constraints better is given in Ref.…”

Section: Introductionmentioning

confidence: 99%

Explaining the DAMPE e+e− excess using the Higgs triplet model with a vector dark matter

Chen

Chiang

Nomura³

2018

Phys. Rev. D

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We explain the e þ e − excess observed by the DAMPE Collaboration using a dark matter model based upon the Higgs triplet model and an additional hidden SUð2Þ X gauge symmetry. Two of the SUð2Þ X gauge bosons are stable due to a residual discrete symmetry and serve as the dark matter candidate. We search the parameter space for regions that can explain the observed relic abundance, and compute the flux of e þ e − coming from a nearby dark matter subhalo. With the inclusion of background cosmic rays, we show that the model can render a good fit to the entire energy spectrum covering the AMS-02, Fermi-LAT, CALET and DAMPE data.

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Section: Introductionmentioning

confidence: 99%

Explaining the DAMPE e+e− excess using the Higgs triplet model with a vector dark matter

Chen

Chiang

Nomura³

2018

Phys. Rev. D

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“…Fig.1 shows the DM annihilation channels in two models to interpret the DAMPE peak. We note that some early studies on the DAMPE peak in terms of fermionic DM which annihilates directly into leptons [3,[13][14][15][16][17] did not include the anomaly free condition on the theory, which are different from our assumption.…”

Section: Introductionmentioning

confidence: 74%

Scalar dark matter interpretation of the DAMPE data with U(1) gauge interactions

et al. 2018

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Recently, the Dark Matter Particle Explorer (DAMPE) experiment released the new measurement of the total cosmic e þ e − flux between 25 GeV and 4.6 TeV, which indicates a spectral softening at around 0.9 TeV and a tentative peak at around 1.4 TeV. We utilize a scalar dark matter (DM) model to explain the DAMPE peak by χχ → Z 0 Z 0 → lll 0 l 0 with an additional anomaly-free gauged Uð1Þ family symmetry, in which χ, Z 0 , and l ð0Þ denote, respectively, the scalar DM, the new gauge boson, and l ð0Þ ¼ e, μ, τ with m χ ∼ m Z 0 ∼ 2 × 1.5 ðTeVÞ. We first illustrate that the minimal framework G SM × Uð1Þ Y 0 with the above mass choices can explain the DAMPE excess, which, however, be excluded by LHC constraints from the Z 0 searches. Then, we study a nonminimal framework G SM × Uð1Þ Y 0 × Uð1Þ Y 00 in which Uð1Þ Y 00 mixes with Uð1Þ Y 0 . We show that such a framework can interpret the DAMPE data and at the same time survive all other constraints including the DM relic abundance, DM direct detection, and collider bounds. We also investigate the predicted e þ e − spectrum in this framework and find that the mass splitting Δm ¼ m χ − m Z 00 should be less than about 17 GeV to produce the peaklike structure.

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“…In [7] a vector-like fermion DM with a new U(1) gauge boson which only couples to the first two lepton generation is used to explain the DAMPE data. In this direction, model independent analysis performed with fermion DM in [8] and with scalar and fermionic DM in [9]. There are also studies within the simplified models with a Z gauge bosons couples only to the first family of leptons (electrophilic interaction) or to the other families as well [10][11][12][13].…”

Section: Jhep05(2018)125mentioning

confidence: 99%

DAMPE electron-positron excess in leptophilic Z′ model

Ghorbani

2018

J. High Energ. Phys.

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Recently the DArk Matter Particle Explorer (DAMPE) has reported an excess in the electron-positron flux of the cosmic rays which is interpreted as a dark matter particle with the mass about 1.5 TeV. We come up with a leptophilic Z scenario including a Dirac fermion dark matter candidate which beside explaining the observed DAMPE excess, is able to pass various experimental/observational constraints including the relic density value from the WMAP/Planck, the invisible Higgs decay bound at the LHC, the LEP bounds in electron-positron scattering, the muon anomalous magnetic moment constraint, Fermi-LAT data, and finally the direct detection experiment limits from the XENON1t/LUX. By computing the electron-positron flux produced from a dark matter with the mass about 1.5 TeV we show that the model predicts the peak observed by the DAMPE.

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Simplified TeV leptophilic dark matter in light of DAMPE data

Cited by 30 publications

References 68 publications

Explaining the DAMPE e+e− excess using the Higgs triplet model with a vector dark matter

Explaining the DAMPE e+e− excess using the Higgs triplet model with a vector dark matter

Scalar dark matter interpretation of the DAMPE data with U(1) gauge interactions

DAMPE electron-positron excess in leptophilic Z′ model

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