# Higgs to WW - only simulated data

Physicists use cuts to select events of interest. Cuts preferentially remove the unwanted processes (background) but leave as much as possible of the desired process (signal). It is useful to have a good understanding of the physics processes involved when applying cuts.

We have created two Histogram Analysers, to help visualise the data. Both histogram analysers display four physics processes.

The four processes are $$H\rightarrow W^+W^-, WW, t\bar t, Z$$
These processes are discussed in the dedicated documentation. Each process is represented by a different colour in Histogram Analyser.

## Make cuts using your cursor.

• Use the cursor to select a specific range in one of the histograms.
• The selected ranges will be coloured, whilst non-selected ranges will be greyed out.
• When you make cuts on a variable the relative contributions of the four processes will change.

To clear your selection on a specific histogram click on the white background within the histogram area.

## Higgs to WW - simulated data

Histogram Analyser displays nine histograms.

• The histograms can take about 30 seconds to load.
• Whilst loading you’ll only see the histogram titles.
• Once loaded you’ll see the histograms appear under their titles.