[Rivet] two ATLAS analyses to be included in Rivet

[Frank Siegert]

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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