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This is a graph from an article from last November on the search for the Higgs with the Atlas detector.

It shows the cross section for a Higgs process relative to the standard model prediction.

And then the upper limit of this, at the 95% confidence level. And this for different Higgs masses.

For the upcoming new results I would like to understand these kind of graphs, can someone explain what it shows?

The standard model prediction, is that with or without the Higgs particle?

Why is the expected ratio not 1, the standard model is expected?

How do you read from this graph the mass range that is excluded?

How does a positive identification of the Higgs at a certain mass look like?

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# Explanation of Higgs mass exclusion graphs?

Can you offer guidance or do you also need help?

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