Fig. 17.

Sum of the 25 signal-plus-background model fits to the event classes in both the 7 and 8$\text{TeV}$datasets, together with the data binned as a function of $m_{\mathit{\gamma }\mathit{\gamma }}$. The $1\mathit{\sigma }$ and $2\mathit{\sigma }$ uncertainty bands shown for the background component of the fit are computed from the fit uncertainty in the background yield in bins corresponding to those used to display the data. These bands do not contain the Poisson uncertainty that must be included when the full uncertainty in the number of background events in any given mass range is estimated. The lower plot shows the residual data after subtracting the fitted background component