Visualizations

QCD toys...

A simplified visualization of some hadrons...

MIT_bag_fluxTubes.mp4

QCD Factorization theorem for A hard process

A simple visualization of a proton-proton collision at high-energies resulting in two jets of hadrons.

SimpleDijetProductionScene.mp4

Viewing structure of a QCD jet

QCD jets generated by PYTHIA8 MC and reconstructed with anti-kT jet finder from FastJet - then decomposed into a angular ordered sequence of clusterings using Caambridge/Aachen algorithm

First jet is about 100 GeV/c - the next one more energetic at about 1 TeV/c with rich substructure.

More reading at: https://pythia.org and https://fastjet.fr

Lund plane density of JETS

Here you can see how a lund plane of 1000 QCD jets looks like. This is Pythia prediction. The arrows indicate a probability of next Lund Point (splitting) to occur. See RIGHT figure for comparison for a single splitting jet trajectory in the Primary Lund Plane.

Lund PLANE for a single JET

Single jet: splitting trajectory in the Primary Lund Plane

trajectory_current.mp4

The video shows the PJLP with developing average trajectory of splittings with new jets adding to the sample (total of 1000 QCD jets).

Hadronic Collision at the LHC according to a MC Model

These are events from PYTHIA8 MC event generator at parton-level (before hadronization). Generated with proton-proton collisions at 13 TeV centre-of-mass energy (Ebeam=6.5 TeV). Note the momenta values on axes have been rescaled by the Ebeam.