Measuring the Higgs self-coupling via Higgs-pair production at a 100 TeV p–p collider Michelangelo L. Mangano, Giacomo Ortona and Michele Selvaggi Eur. Phys. J. C, 80 11 (2020) 1030 Published online: 08 November 2020 DOI: 10.1140/epjc/s10052-020-08595-3