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arXiv · 2605.13078

Possibility of Probing an Extra Higgs Boson at the Compact Linear Collider

Mohamed Krab
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Abstract

We study the sensitivity of the Compact Linear Collider (CLIC) to an additional neutral Higgs boson $H$ through the vector boson fusion process $e^+e^- \to H\nu\bar \nu$, followed by the decay $H \to W^+W^-$, with both $W$ bosons decaying leptonically, resulting in a dilepton plus missing transverse energy final state. Within the framework of the Two Higgs Doublet Model, where both production and decay are governed by the Higgs mixing angle $\cos(\beta-\alpha)$, we perform a detector-level analysis and show that a high-energy CLIC can probe $H$ via this channel, allowing a direct measurement of the $HWW$ coupling.

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Mohamed Krab. 2026-05-13. Possibility of Probing an Extra Higgs Boson at the Compact Linear Collider. https://doi.org/10.1140/epjp%2Fs13360-026-07795-2

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