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Virtual effects of split-SUSY in Higgs productions at linear colliders

Abstracts

In split supersymmetry, gauginos and higgsinos are the only supersymmetric particles possibly accessible at foreseeable colliders like the CERN Large Hadron Collider (LHC) and the International Linear Collider (ILC). In order to account for the cosmic dark matter measured by WMAP, these gauginos and higgsinos are stringently constrained and could be explored at the colliders through their direct productions and/or virtual effects in some processes. The clean environment and high luminosity of the ILC render the virtual effects at percent level meaningful in unraveling the new physics effects. In this work we assume split supersymmetry and calculate the virtual effects of the WMAP-allowed gauginos and higgsinos in the Higgs productions e(+) e(-) -> Zh and e(+) e(-) ->nu(e)(nu) over bar (e)h through WW fusion at the ILC. We find that the production cross section of e+ e-. Zh can be altered by a few percent in some part of the WMAP-allowed parameter space, while the correction to the WW fusion process e(+) e(-) ->nu(e) (nu) over bar (e)h is below 1%. Such virtual effects are correlated with the cross sections of chargino pair productions and can offer complementary information in probing split supersymmetry at the colliders.
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Journal:EUROPEAN PHYSICAL JOURNAL C
Recommended references: Wang, Fei,Wang, Wenyu,Xu, Fuqiang,Yang, Jin Min,Zhang, Huanjun.(2016).Virtual effects of split-SUSY in Higgs productions at linear colliders.EUROPEAN PHYSICAL JOURNAL C.[ChinaXiv:201605.01780] (Click&Copy)
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[V1] 2016-05-15 20:46:17 chinaXiv:201605.01780V1 Download
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