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The negative log-likelihood is constructed as shown in Eq. (2), where Yi jk denotes the yield of kth bin of jth signal region of ith channel. Nuisance param- eters, which have external constraints f (αl ), are penalized in the negative log-likelihood. Channels Regions Bins − log ...
These parameters are implemented as Gaussian priors in the case of shape uncer- tainties and log-normal priors for uncertainties affecting the normalisation, with width parameters corresponding to the size of the respective uncertainties. Statistical uncertainties in the background estimates in each bin...