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2020

Measuring the quartic Higgs self-coupling at a multi-TeV muon collider

Chiesa, Mauro, Maltoni, Fabio, Mantani, Luca et al.

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Measuring the shape of the Higgs boson potential is of paramount importance and will be a challenging task at current as well as future colliders.

While the expectations for the measurement of the trilinear Higgs self-coupling are rather promising, an accurate measurement of the quartic self-coupling interaction is presently considered extremely challenging even at a future 100 TeV proton-proton collider.
In this work we explore the sensitivity that a muon collider with a center of mass energy in the multi-TeV range, and luminosities of the order of 10^35cm^-2s^-1, as presently under discussion, might provide thanks to a rather large three Higgs-boson production and to a limited background.
By performing a first and simple analysis, we find a clear indication that a muon collider could provide a determination of the quartic Higgs self-coupling that is significantly better than what is currently considered attainable at other future colliders.

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