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Asymmetric dark matter in the Sun and diphoton excess at the LHC

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摘要

It has been recently pointed out that a momentum-dependent coupling of the asymmetric dark matter (ADM) with nucleons can explain the broad disagreement between helioseismological observables and the predictions of standard solar models. In this paper, we propose a minimal simplified ADM model consisting of a scalar and a pseudoscalar mediator, in addition to a Dirac fermionic DM, for generating such momentum-dependent interactions. Remarkably, the pseudoscalar with mass around 750 GeV can simultaneously explain the solar anomaly and the recent diphoton excess observed by both ATLAS and CMS experiments in the early root s = 13 TeV LHC data. In this framework, the total width of the resonance is naturally large, as suggested by the ATLAS experiment, since the resonance mostly decays to the ADM pair. The model predicts the existence of a new light scalar in the GeV range, interacting with quarks, and observable dijet, monojet, and t (t) over bar signatures for the 750 GeV resonance at the LHC.

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  • 来源
    《Physical review, D》 |2016年第2期|共7页
  • 作者

    Dev P. S. Bhupal; Teresi Daniele;

  • 作者单位

    Tech Univ Munich, Phys Dept T30d, James Franck Str 1, D-85748 Garching, Germany;

    Univ Libre Bruxelles, Serv Phys Theor, Blvd Triomphe,CP225, B-1050 Brussels, Belgium;

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  • 正文语种 英语
  • 中图分类 粒子物理学;场论;
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