Dark Matter Results from 54-Ton-Day Exposure of PandaX-II Experiment

Cui, X. F.; Abdukerim, Abdusalam; Chen, Wei; Chen, Xun; Chen, Yunhua; Dong, B.; Fang, Deqing; Fu, Changbo; Giboni, Karl; Giuliani, F.; Gu, Linhui; Gu, Yikun; Guo, Xuyuan; Guo, Z.; Han, K.; He, Changda; Huang, Di; He, Shengming; Huang, X. T.; Huang, Zhongqiang; Ji, Xiangdong; Ju, Yonglin; Li, Shaoli; Li, Yao; Lin, Huibin; Liu, Huaxuan; Liu, Jianglai; Ma, Yugang; Mao, Y.; Ni, K.; Ning, Jinhua; Ren, Xiangxiang; Shi, Fang; Tan, Andi; Wang, Cheng; Wang, Hongwei; Wang, Meng; Wang, Qiuhong; Wang, Siguang; Wang, Xiuli; Wang, Xüming; Wu, Q.; Wu, Shiyong; Xiao, M.; Xie, Pengwei; Yan, Binbin; Yang, Y.; Yue, Jianfeng; Zhang, Dan; Zhang, Honggang; Zhang, Tao; Zhang, Tianqi; Zhao, Li; Zhou, Jifang; Zhou, N.; Zhou, Xiaopeng

doi:10.1103/physrevlett.119.181302

Cited by 1,034 publications

(1,232 citation statements)

References 28 publications

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“…• III-DD: DM direct detection bounds on spin-independent (SI) DM-nucleon scattering rate σ S I DM−n from the recent XENON-1T [23] and PandaX-II experiments [24].…”

Section: Introductionmentioning

confidence: 99%

Explaining the DAMPE data with scalar dark matter and gauged $$U(1)_{L_e-L_\mu }$$ U ( 1 ) L e

Cao¹,

Liu²,

Guo³

et al. 2018

Eur. Phys. J. C

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Inspired by the peak structure observed by recent DAMPE experiment in e + e − cosmic-ray spectrum, we consider a scalar dark matter (DM) model with gauged U (1) L e −L μ symmetry, which is the most economical anomaly-free theory to potentially explain the peak by DM annihilation in nearby subhalo. We utilize the process χχ → Z Z → lll l , where χ , Z , l ( ) denote the scalar DM, the new gauge boson and l ( ) = e, μ, respectively, to generate the e + e − spectrum. By fitting the predicted spectrum to the experimental data, we obtain the favored DM mass range m χ 3060 +80−100 GeV and m ≡ m χ − m Z 14 GeV at 68% Confidence Level (C.L.). Furthermore, we determine the parameter space of the model which can explain the peak and meanwhile satisfy the constraints from DM relic abundance, DM direct detection and the collider bounds. We conclude that the model we consider can account for the peak, although there exists a tension with the constraints from the LEP-II bound on m Z arising from the cross section measurement of e + e − → Z * → e + e − .

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“…• III-DD: DM direct detection bounds on spin-independent (SI) DM-nucleon scattering rate σ S I DM−n from the recent XENON-1T [23] and PandaX-II experiments [24].…”

Section: Introductionmentioning

confidence: 99%

Explaining the DAMPE data with scalar dark matter and gauged $$U(1)_{L_e-L_\mu }$$ U ( 1 ) L e

Cao¹,

Liu²,

Guo³

et al. 2018

Eur. Phys. J. C

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“…When the mass of DM is close to m Φ /2, DM annihilation cross section will be enhanced by resonance effect. In order to satisfy the DM relic density requirement, the couplings g V χ and g V have to become small, which will suppress the DM-nucleus scattering cross section so that the PandaX-II bound can be evaded [61]. For P ⊗ S coupling, the DM-nucleus scattering cross section is highly reduced due to two-loop suppression, while for P ⊗P and V ⊗A couplings, the DM has no interactions with nucleus.…”

Section: Numerical Results and Discussionmentioning

confidence: 99%

Simplified TeV leptophilic dark matter in light of DAMPE data

Duan¹,

Liu²,

Wang³

et al. 2018

J. High Energ. Phys.

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Using a simplified framework, we attempt to explain the recent DAMPE cosmic e + + e − flux excess by leptophilic Dirac fermion dark matter (LDM). The scalar (Φ 0 ) and vector (Φ 1 ) mediator fields connecting LDM and Standard Model particles are discussed. We find that the couplings P ⊗ S, P ⊗ P , V ⊗ A and V ⊗ V can produce the right bump in e + + e − flux for a DM mass around 1.5 TeV with a natural thermal annihilation crosssection < σv >∼ 3×10 −26 cm 3 /s today. Among them, V ⊗V coupling is tightly constrained by PandaX-II data (although LDM-nucleus scattering appears at one-loop level) and the surviving samples appear in the resonant region, m Φ 1 2m χ . We also study the related collider signatures, such as dilepton production pp → Φ 1 → + − , and muon g −2 anomaly. Finally, we present a possible U(1) X realization for such leptophilic dark matter.

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“…8 We use a similar method in deriving the constraint for CDMS-LITE, the details of which are given in the appendix. We checked that the constraints from XENON1T [12] and PANDAX-II [13] are similar to those arising from LUX.…”

Section: Direct Detectionmentioning

confidence: 99%

“…coupled to the radiation bath, and matter decoupled from the radiation bath in the early Universe [7]. On the other hand, searches for DM-induced nuclear recoils at direct detection experiments [8][9][10][11][12][13], production of DM at colliders [14][15][16] and indirect detection of DM through observation of its annihilation products in the universe around us [17,18] -apart from some long-standing anomalies [19][20][21][22][23][24][25][26] -have so far turned out negative.…”

Section: Introductionmentioning

confidence: 99%

Asymmetric dark matter: residual annihilations and self-interactions

et al. 2018

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Dark matter (DM) coupled to light mediators has been invoked to resolve the putative discrepancies between collisionless cold DM and galactic structure observations. However, γ-ray searches and the CMB strongly constrain such scenarios. To ease the tension, we consider asymmetric DM. We show that, contrary to the common lore, detectable annihilations occur even for large asymmetries, and derive bounds from the CMB, γ-ray, neutrino and antiproton searches. We then identify the viable space for self-interacting DM. Direct detection does not exclude this scenario, but provides a way to test it.

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Dark Matter Results from 54-Ton-Day Exposure of PandaX-II Experiment

Cited by 1,034 publications

References 28 publications

Explaining the DAMPE data with scalar dark matter and gauged $$U(1)_{L_e-L_\mu }$$ U ( 1 ) L e

Explaining the DAMPE data with scalar dark matter and gauged $$U(1)_{L_e-L_\mu }$$ U ( 1 ) L e

Simplified TeV leptophilic dark matter in light of DAMPE data

Asymmetric dark matter: residual annihilations and self-interactions

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