arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1109.6478hep-ph
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左右超对称模型中的暗物质和LHC现象

Dark matter and LHC phenomenology in a left-right supersymmetric model

J. N. Esteves, M. Hirsch, W. Porod, J. C. Romao, F. Staub, A. Vicente

摘要:

最小超对称标准模型的左右对称扩展可以解释中微子数据,并具有超越最小超对称跷跷板模型的潜在有趣现象。在这里,我们研究了一个超对称模型,其中的左右对称性被打破的三胞胎在高尺度,但显着低于大统一尺度。在这个模型中的Sparticle谱不同于通常的约束MSSM的预期,这些变化影响最轻的中性伴子的遗迹丰度。我们讨论的标准stau(和停止)共湮灭,希格斯漏斗和焦点区域的变化。该模型具有潜在的大轻子味违反,左,右,标量轻子,从而允许,在原则上,也为味的共同湮灭。我们还讨论了轻子味信号,由于违反衰变的第二个最轻的中性伴子在大型强子对撞机,这可以是大到20 FB $^{-1}$在$\sqrt{s}=14$ TeV。

英文摘要:

Left-right symmetric extensions of the Minimal Supersymmetric Standard Model can explain neutrino data and have potentially interesting phenomenology beyond that found in minimal SUSY seesaw models. Here we study a SUSY model in which the left-right symmetry is broken by triplets at a high scale, but significantly below the GUT scale. Sparticle spectra in this model differ from the usual constrained MSSM expectations and these changes affect the relic abundance of the lightest neutralino. We discuss changes for the standard stau (and stop) co-annihilation, the Higgs funnel and the focus point regions. The model has potentially large lepton flavour violation in both, left and right, scalar leptons and thus allows, in principle, also for flavoured co-annihilation. We also discuss lepton flavour signals due to violating decays of the second lightest neutralino at the LHC, which can be as large as 20 fb$^{-1}$ at $\sqrt{s}=14$ TeV.

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