Boosting Higgs pair production in the [Formula: see text] final state with multivariate techniques

Area of Science:

• High Energy Physics
• Particle Physics
• Quantum Field Theory

Background:

• Higgs pair production is crucial for understanding electroweak symmetry breaking.
• It offers unique sensitivity to the Higgs trilinear coupling, a key parameter in the Standard Model.
• Measuring this process is a primary goal for the future Large Hadron Collider (LHC) program.

Purpose of the Study:

• To investigate the feasibility of measuring Higgs pair production in the [Formula: see text] final state at the LHC.
• To assess the potential for observing double Higgs production with future LHC data.

Main Methods:

• Utilized a combination of traditional cut-based analyses and advanced multivariate techniques.
• Accounted for all significant background processes, including jet mis-identification.
• Evaluated the analysis strategy's robustness in a high pileup environment.

Main Results:

• Achieved a signal significance of [Formula: see text] for an integrated luminosity of [Formula: see text] ab[Formula: see text].
• Demonstrated that the [Formula: see text] final state alone is sufficient for potential observation.
• Showcased the viability of the proposed analysis strategy.

Conclusions:

• The [Formula: see text] final state presents a promising channel for observing double Higgs production.
• The proposed analysis strategy is robust and effective, even in challenging high pileup conditions.
• This measurement will be a cornerstone of the LHC's future program, probing fundamental aspects of electroweak symmetry breaking.