Cross sections with cut lines vs. inclusive do not agree

[Frank Siegert]

Bill Murray looks at cross sections for a run where he tries to split background process pp -> Z[mumu]bb (with Higgs disabled) from signal process pp -> Z[mumu]H[bb]. Doing both in one run yields a factor 3 different cross section from adding the separately integrated cross sections, even though in this case one would expect the process to factorise fairly well (?).

We suspect that it has to do with the Higgs width not being recalculated for the chosen Higgs mass (he was using m_H=400 GeV I think). If this can be confirmed, we would have to calculate the particle width using all vertices found in the model. This is closely related to ongoing work on inclusive hard decays, so FS and FK are going to work on it.

Next step: Reproduce problem and verify that it has to do with the width.