⚛ CERN Open Data Platform

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Available Datasets

CMS/ATLAS collision data from the Large Hadron Collider. Simulated physics events based on real CERN Open Data distributions.

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Event Information

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Electrons
Muons
Photons
Jets
MET

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🖱 Left-click + drag: Rotate
🖱 Right-click + drag: Pan
🖱 Scroll: Zoom
Click "η-φ View" for calorimeter-style view

⚛ Particle Zoo — The Building Blocks

📋 Standard Model of Particle Physics

The Standard Model describes all known fundamental particles and three of the four fundamental forces. Quarks combine to form hadrons (protons, neutrons, etc.).

💧 Higgs Field — How Particles Get Mass

The Higgs field permeates all space. Particles interact with it to gain mass — the stronger the interaction, the heavier the particle. Select a particle to see how it moves through the field.

The top quark interacts strongly with the Higgs field, moving slowly through it — this is why it's the heaviest known elementary particle.

🔥 Quark-Gluon Plasma

At temperatures over 2 trillion Kelvin (trillions of degrees), quarks and gluons are no longer confined inside hadrons. This state existed microseconds after the Big Bang and is recreated at the LHC.

● Up quarks   ● Down quarks   〰 Gluons   ● Strange quarks

🌊 Photon Wave-Particle Duality

Photons exhibit both wave-like and particle-like behavior. Below they propagate as an electromagnetic wave, but interact as discrete packets of energy (quanta).

Wave mode: Electromagnetic wave oscillating in space. The electric (E) and magnetic (B) fields are perpendicular to each other and to the direction of propagation.

Select a dataset and click Analyze to see the Higgs analysis.

This will compute kinematic distributions from the dataset.