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  1. ROOT
  2. ROOT-10920

Models with Poisson constraints don't have noRounding=true

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      Description

      When defining a model with a Poisson constraint with a global observable, the corresponding Poisson constraints is evaluated with noRounding=false, which means that the global observable value from the Asimov data set is treated as an integer, resulting in a wrong estimation of CLb and expected limits. 

       

      This is is not the case when defining the global observable as a real observable, because in that case the Poisson term has the flag noRounding=true.

      This has been reported in
      https://root-forum.cern.ch/t/roostats-hypothesis-inversion-demo-on-off-problem-how-to-handle-observables/40318/

       

      The attached macros also show the problem.

       

       

       

       

       

      The attached macro show a 

        Attachments

        1. model1.C
          3 kB
          Lorenzo Moneta
        2. model2.C
          2 kB
          Lorenzo Moneta

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            Assignee:
            moneta Lorenzo Moneta
            Reporter:
            moneta Lorenzo Moneta
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