Collider
Which state a dijet search bounds, plus a separate Higgs-rate scenario checked against pinned experimental datasets.
Control names are kept as they appear in the application. Start with a reference, change one input at a time, and retain the assumptions with your result.
What this tool is for
Use this to connect a model's coloured state with the particular dijet measurement used in the archived comparison. The separate Higgs-rates experiment studies a specified scalar-coupling scenario. Keeping those two subjects distinct prevents a limit on one particle hypothesis from becoming an unsupported verdict about a whole GHU model.
First steps
- Use the Higgs-rates shortcut to compare a saved scalar scenario, its widths and rates, and matching HiggsBounds/HiggsSignals calculations.
- Read the coupling and invisible-width assumptions alongside the HiggsSignals chi-square and the analysis selected by HiggsBounds.
- Read the coloron's mass and width — both fixed by the localisation, not chosen.
- Drag the relief over (M_jj, χ), the plane CMS bins its angular measurement in.
- Type any 1/R₅ to see the ratio table move.
Controls and inputs
| Control | Meaning | Try this |
|---|---|---|
| Compactification scale 1/R₅ | Sets the model scale for the displayed colour-sector comparison. | Change it and read the model-to-reference ratios at the named bins. |
| Dijet relief | Displays the predicted distortion over the dijet mass and angular variable used in the measurement. | Rotate the view and read the axes and reference-bin labels. |
| Higgs-rates shortcut | Opens the separate coupling/width experiment and its matching experimental calculations. | Start with its Standard Model reference before changing a coupling. |
Reading the results
| Result | Meaning |
|---|---|
| Coloron mass, width and coupling | Belong to the stated localization and colour-sector assumptions; they are not freely interchangeable with another resonance model's parameters. |
| Dijet ratio and archived Δχ² | The displayed comparison retains the provenance of the original recast. It is not a newly executed fit to every dataset stored in the laboratory. |
| CMS reference snapshot | Seven distributions and 77 bins are archived with source records. The correlation table concerns fitted signal strengths and is not an unfolded-spectrum covariance matrix. |
The dijet Δχ² values are quoted from the published record; the Higgs experiment computes its own comparison. Its 159 HiggsSignals observables are not 159 independent degrees of freedom. Coupling and width assumptions can compensate in visible rates, so this scalar comparison is not a complete GHU fit.
Worked example
Inspect the hypothesis behind a collider comparison
- Read which coloured state and localization assumptions define the current calculation.
- Record the scale and one named-bin ratio.
- Change the scale while retaining the particle hypothesis.
- Open the dataset/source description and distinguish the archived recast from newly stored reference data.
What to expect: The numerical response is traceable to a named hypothesis and analysis. Importing a dataset alone has not created a new GHU exclusion.
Scope and limitations
- A published bound is reusable only to the extent that its production, decay and acceptance assumptions match the proposed state.
- The stored CMS data have not been combined into a new laboratory likelihood or a new GHU fit.
- The HiggsTools comparison belongs to its supplied scalar scenario. Its observable count is not automatically the statistical number of degrees of freedom.
If something is unclear
A limit seems much stronger than another panel's limit.
Compare the particle identity, production channel, branching assumptions and reference analysis before comparing numbers.
The Higgs experiment reports a pending calculation.
Use a matching saved reference, import a matching result or explicitly run the configured local engine. Do not reuse a result for different couplings.
Terms used here
Sources and attribution
Current instrument guide. Archived editions retain their own scope.
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