[Rivet] setSumOfWeights

[Silvan Kuttimalai]

Hi Andy,

thanks for the quick response! If I understand the issue correctly, then 
we might just as well re-set the total cross sections for our 
sub-contributions and leave the sum of weights untouched. To me this 
even seems like to conceptually better way of doing it. I just ran a 
test and it appears to work for us. Would you see any issues in this 
approach?

Best regards,
Silvan

On 03/15/2018 03:55 AM, Andy Buckley wrote:
> Hi Silvan,
>
> The issue is that more than the sum of weights alone is needed now. 
> Can you also supply the sum of squared weights? If so, I'll add an 
> extra argument and an implementation to version 2.6.1.
>
> Andy
>
> *Dr Andy Buckley, Lecturer / Royal Society University Research Fellow*
> Particle Physics Experiment Group, University of Glasgow
>
> 	
>
> On Mar 14 2018, at 11:45 pm, Silvan Kuttimalai 
> <silvan at slac.stanford.edu> wrote:
>
>
>     Dear Rivet Authors,
>
>     we noted that in Rivet version 2.6.0 the method
>     AnalysisHandler::setSumOfWeights is not present anymore. We used this
>     method in Sherpa in order to automatically split up our rivet analysis
>     output by contributions from H and S events in MC at NLO for example. To
>     get the normalization of these sub contributions right, we set the sum
>     of weights explicitly at the end of the run. Is there an
>     alternative for
>     this procedure in the new version?
>
>     Many thanks,
>     Silvan
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