Dark matter in the little Higgs model under current experimental constraints from the LHC, Planck, and Xenon data
Dark matter in the little Higgs model under current experimental constraints from the LHC, Planck, and Xenon data
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在大型强子对撞机、普朗克和氙数据的当前实验限制下,小希格斯模型中的暗物质
DOI:
10.1103/physrevd.88.075018
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发表时间:
2013-07
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通讯作者:
Jingya Zhu
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作者:
Lei Wang;Jin Min Yang;Jingya Zhu
We examine the status of dark matter (heavy photon) in the littlest Higgs model with T parity (LHT) in light of the new results from the LHC Higgs search, the Planck dark matter relic density, and the XENON100 limit on the dark matter scattering off the nucleon. We obtain the following observations: (i) For the LHC Higgs data, the LHT can well be consistent with the CMS results but disfavored by the ATLAS observation of diphoton enhancement; (ii) for the dark matter relic density, the heavy photon in the LHT can account for the Planck data for the small mass splitting of mirror lepton and heavy photon; (iii) for the dark matter scattering off the nucleon, the heavy photon can give a spin-independent cross section below the XENON100 upper limit for m(AH) > 95 GeV (f > 665 GeV); (iv) a fit using the CMS Higgs data gives the lowest chi square of 2.63 (the standard model value is 4.75) at f similar or equal to 1120 GeV and m(AH) similar or equal to 170 GeV (at this point, the dark matter constraints from Planck and XENON100 can also be satisfied). Such a best point and its nearby favored region (even for an f value up to 3.8 TeV) can be covered by the future XENON1T (2017) experiment.
DOI:
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发表时间:
2009
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作者:
Z. Karpova;M. N. Sergeenko;V. Bednyakov
通讯作者:
Z. Karpova;M. N. Sergeenko;V. Bednyakov
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