Higgs Self-Coupling at the HL-LHC and HE-LHC

The Higgs boson pair production has been studied in multifarious final states at the HL-LHC and HE-LHC. The optimisation for separating signal from the backgrounds are performed using cut-based and machine learning algorithms like BDT, XGBoost toolkit and DNN. The prospect of observing Higgs pair production is found to be bleak at the HL-LHC. In comparison, the HE-LHC will be sensitive for probing the Higgs boson self-coupling. We further study the consequences of modifying the Higgs boson self-coupling from its SM value.