[Rivet] two ATLAS analyses to be included in Rivet

[Roman Lysak]

   Hi Frank,

you are right, your changes made the code more general and clear.
However, there was a bug in your version of code, I fixed this (see 
attachment), tested  and the results are the same as before.

Thanks,
   Roman


On 09/26/2012 12:14 PM, Frank Siegert wrote:
> Dear Roman,
>
> Thank you for these analyses. I have one comment on ATLAS_2011_I954993
> (the WZ one).
>
> When you calculate the statistical error on the fiducial cross
> section, you are using
> fidXS_err = fidXS/std::sqrt(AllPassed);
> This isn't going to work in the general case with event weights, even
> though AllPassed is correctly built using the weights.
> In fact, it is going to be much simpler to use a Rivet histogram right
> away for keeping track of "AllPassed", and just normalise it correctly
> in the end.
>
> I'm attaching a tarball where I have made this modification, which
> also makes the code clearer and shorter. Note, that we can use a
> histogram here without correcting for the unwanted bin width division
> because the bin width is chosen as 1.
>
> Let me know if you can confirm that these changes still reproduce your
> result correctly (I have only tested that it compiles so far), and
> I'll commit the analysis into Rivet's SVN.
>
> Cheers,
> Frank
>
> On 26 September 2012 11:24, Roman Lysak <lysak at fzu.cz> wrote:
>>   Dear Rivet authors,
>>
>> we have prepared two analyses from Atlas experiment which we would like to
>> include into Rivet.
>> We validated that they produce consistent results comparing to results in
>> the papers.
>> All necessary information can be found in the attachment.
>>
>> Please let me know if anything else is required.
>>
>> Thanks,
>>    Roman Lysak
>>
>>
>> _______________________________________________
>> Rivet mailing list
>> Rivet at projects.hepforge.org
>> http://www.hepforge.org/lists/listinfo/rivet

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