New Methods of Probing Higgs Self-Coupling

This is an analysis of the new final state WWH (W-boson and Higgs boson production in association with jets) process using Monte Carlo simulation data processed with ROOT to probe the Higgs self-coupling which is not yet measured at CERN's LHC. However, other processes which generate the same final state tend to be produced more often during the collision, which makes the WWH final state due to the Higgs self-coupling very rare. This analysis aims to optimize the selection. By carefully selecting events and normalizing the contributions from different signal samples, the analysis seeks to accurately compare various K-lambda values, which represent different strengths of the Higgs self-coupling. By applying specific selection criteria on these variables—such as requiring high pT (transverse momentum) for jets or ensuring a minimum separation (ΔR) between jets—we can filter out irrelevant events. These criteria are then tested across samples with different values of K-lambda, a parameter related to the Higgs self-interaction, to assess their impact on the analysis's overall sensitivity. The goal is to improve the signal-to-background ratio, allowing for a more precise probe of the Higgs self-coupling at the LHC.