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Collider constraints on interactions of dark energy with the Standard Model

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


Journal:
Journal of High Energy Physics


Issue Date:
2009


Abstract(summary):

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.


Page:
128-128


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