Collider constraints on interactions of dark energy with the Standard Model
arXiv:0904.3002 · doi:10.1088/1126-6708/2009/09/128
Abstract
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.
39 pages, 8 figures, uses ioplatex.sty and feynmp. v2: Matches version accepted by JHEP; extended discussion of straight corrections, summarized in the text and described in detail in a new Appendix A. Conclusions unchanged
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Cited by in corpus (27)
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- Tests of Chameleon Gravity
- Do we have any hope of detecting scattering between dark energy and baryons through cosmology?
- Testing Screened Modified Gravity
- Atomic Precision Tests and Light Scalar Couplings
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