Higgs Couplings at a Future Wakefield Collider

Abstract

We explore the potential of multiple possible future 10 TeV wakefield colliders to measure electroweak couplings of the Higgs boson. We find that the beam-beam interactions are not an impediment to high precision measurements of the Higgs couplings, provided that the luminosity spectra can be measured or calculated to high accuracy. In addition to $e^{+}{e}^{-}$ colliders, we also assess the effectiveness of alternatives such as $e^{-}{e}^{-}$ colliders or ${\hat{I}}^3{\hat{I}}^3$ colliders, which by-pass the positron acceleration challenge for wakefield colliders. We find that a 10 ${\text{ab}}^{-1}$ dataset at a ${\hat{I}}^3{\hat{I}}^3$ collider yields qualitatively similar sensitivity to 10 ${\text{ab}}^{-1}$ at a muon collider and 1 ${\text{ab}}^{-1}$ at an $e^{+}{e}^{-}$ wakefield collider.

31 pages, 12 tables, 11 figures