Speaker
Description
The Higgs boson discovery at the Large Hadron Collider (LHC) completed the Standard Model (SM). Still, the possibility of additional scalar bosons remains open, provided their contributions to electroweak symmetry breaking are sufficiently small. Recent analyses of LHC data have revealed statistically significant anomalies in multi-lepton final states, characterized by events with multiple leptons, missing transverse energy, and jets. These anomalies provide intriguing hints of physics beyond the SM.
In this work, we present the signature of growing excesses for a new scalar resonance with a mass of (152 $\pm$ 1) GeV, observed in the $\gamma\gamma$, Z$\gamma$\, and WW channels. The combined global significance reaches a level that points toward the growing signature of this resonance. The findings align with a simplified model in which a heavy scalar boson decays into two lighter scalars, providing a consistent explanation for the observed multi-lepton anomalies.
These results significantly advance the search for new scalar bosons at the electroweak scale. Future investigations, including precision studies with upcoming HL-LHC data, will be crucial for confirming the nature of this resonance and exploring its implications for extending the SM.
