Compact violence at enormous energy
Proton collisions at the LHC produce extremely energetic particles, including W/Z bosons and top quarks.
Master's thesis
Topo-cluster splitting in boosted ATLAS objects
An animated walkthrough of my master's thesis on how splitting calorimeter topo-clusters changes the reconstruction of highly boosted particles.
From proton collision to reconstruction study
Decay products merge
When these particles are strongly boosted, their decay products fly in nearly the same direction and appear as one tight jet.
Energy becomes topo-clusters
In the ATLAS calorimeter, adjacent energy deposits are grouped into topo-clusters: three-dimensional islands of measured shower energy.
Clusters can grow too large
If a topo-cluster swallows several nearby energy maxima, the internal jet substructure can become blurred.
Energy maxima define subclusters
A splitting algorithm divides large clusters around local energy maxima so the relevant substructure remains visible.
Measure the reconstruction impact
My work systematically uses Monte-Carlo simulations to quantify how much this splitting changes boosted-object reconstruction.
Boosted W/Z bosons and top quarks
The thesis focuses on high-momentum objects whose decay products overlap inside a single large-radius jet.
Topo-clusters and substructure
It compares reconstruction with and without splitting to isolate effects on calorimeter-level jet structure.
Monte-Carlo comparisons
Controlled simulated samples make it possible to separate algorithmic effects from statistical and physics-process differences.
More detail can be added later
This page currently turns the thesis summary into a visual narrative. It can later grow with plots, selection details, and links to the thesis PDF.