Abstract
An important physics goal of a possible next-generation high-energy hadron collider will be precision characterisation of the Higgs sector and electroweak symmetry breaking. A crucial part of understanding the nature of electroweak symmetry breaking is measuring the Higgs self-interactions. We study dihiggs production in proton-proton collisions at 100 TeV centre of mass energy in order to estimate the sensitivity such a machine would have to variations in the trilinear Higgs coupling around the Standard Model expectation. We focus on the \( b\overline{b}\gamma \gamma \) final state, including possible enhancements in sensitivity by exploiting dihiggs recoils against a hard jet. We find that it should be possible to measure the trilinear self-coupling with 40% accuracy given 3/ab and 12% with 30/ab of data.
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Barr, A.J., Dolan, M.J., Englert, C. et al. Higgs self-coupling measurements at a 100 TeV hadron collider. J. High Energ. Phys. 2015, 16 (2015). https://doi.org/10.1007/JHEP02(2015)016
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DOI: https://doi.org/10.1007/JHEP02(2015)016