Journal of High Energy Physics (Sep 2020)

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

  • M. Chiesa,
  • F. Maltoni,
  • L. Mantani,
  • B. Mele,
  • F. Piccinini,
  • X. Zhao

DOI
https://doi.org/10.1007/JHEP09(2020)098
Journal volume & issue
Vol. 2020, no. 9
pp. 1 – 29

Abstract

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Abstract 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 1035cm−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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