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arXiv 0904.3002hep-phastro-ph.COhep-th
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暗能量与标准模型相互作用的对撞机约束

Collider constraints on interactions of dark energy with the Standard Model

Philippe Brax, Clare Burrage, Anne-Christine Davis, David Seery, Amanda Weltman

摘要:

我们研究的模型中,一个轻标量暗能量粒子耦合到规范场的电弱力,光子,Z和W玻色子。我们的分析适用于一大类相互作用的暗能量模型,包括那些暗能量质量可以通过所谓的变色龙机制调整以逃避第五力边界的模型。我们的结论是-与通常的希格斯部门的选择-电弱精密观测筛选的间接影响的暗能量,使这种校正有效地不可观察的,在当今的对撞机,并限制了暗能量发现潜力的任何未来的国际直线对撞机。我们发现,一个类似的筛选效果适用于风味变化的中性电流介导的过程,这可以追溯到Glashow-Iliopoulos-Maiani机制。然而,大型强子对撞机通过弱玻色子融合产生的希格斯玻色子可能会得到可观测的修正。

英文摘要:

We study models in which a light scalar dark energy particle couples to the gauge fields of the electroweak force, the photon, Z and W bosons. Our analysis applies to a large class of interacting dark energy models, including those in which the dark energy mass can be adjusted to evade fifth-force bounds by the so-called chameleon mechanism. We conclude that--with the usual choice of Higgs sector--electroweak precision observables are screened from the indirect effects of dark energy, making such corrections effectively unobservable at present-day colliders, and limiting the dark energy discovery potential of any future International Linear Collider. We show that a similar screening effect applies to processes mediated by flavour-changing neutral currents, which can be traced to the Glashow-Iliopoulos-Maiani mechanism. However, Higgs boson production at the Large Hadron Collider via weak boson fusion may receive observable corrections.

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