Choose a universe.
01 / observeEach dot is one 1 GeV bin. The teal line is the model’s background-only mean, fixed before this universe was generated.
The gold marker is your current mass; the bright line shows masses searched so far. Scanning more places gives noise more chances to look impressive.
The real search had stakes.
In the diphoton exercise, the simplified fit finds a bump at the already-known 125 GeV mass. Searching across 118–132 GeV asks a harder question. The fleet’s background-only simulations help estimate how much that wider search changes the evidence.
The 100,000 toys directly check the method around 2–3σ. The higher global estimate uses Gross–Vitells extrapolation. Both figures are statistics-only results from a hobby re-analysis of ATLAS Open Data; neither is an ATLAS result.
A result you can check.
All three spectra come from a frozen background-only model of the real-data diphoton exercise. The Resource Team computed and verified 100,000 simulated universes. We sorted their strongest mass-scan fit scores, then chose the median, the 99th percentile, and the maximum. That deliberate selection is why this gallery gets dramatic.
These are simulated counts, not ATLAS collision events. The local fit score for one selected universe is not a discovery significance. This educational model includes statistical fluctuations and a simplified fit; it does not cover every detector and background uncertainty.
- model
- hyy36-v1
- campaign
- 100,000 verified toys
- selection
- 50th · 99th · maximum
- computed by
- —
- your universe
- verified job ↗
- replay
- worker script ↗
Run python physics-worker.py --replay ID --check 0 to reproduce every reported toy in this job. Meet the Resource Team →
One beautiful bump is a question. Many checked universes help answer it.
See the real Higgs data →