[Rivet] HepData consistency

[Andy Buckley]

Absolutely. I'm not sure how good the groups are at propagating errata 
to us. There's maybe been an assumption that we'll pick up the updates 
from HepData -- which was our intention all along -- but the divergence 
of HD from what we're given has broken that. It's a big problem... and 
not one we can ignore. We need to involve the HepData people.

Andy



On 04/10/16 13:07, David Grellscheid wrote:
> Hi Chris,
>
> In that case, shouldn't the change propagate to Rivet, too?
>
> See you,
>
>   David
>
>
> On 04/10/16 12:46, Christian Gutschow wrote:
>> Hi Holger,
>>
>> there are cases where the Rivet reference data values and the HEPData
>> reference values will be different because e.g. there’s a note on
>> HEPData saying the central values ought to be shifted by some factor in
>> order to account for the the final luminosity calibration for the
>> respective year (which hadn’t been available when the HEPData entry was
>> made public).
>>
>> Cheers,
>> Chris
>>
>>
>>
>>> On 4 Oct 2016, at 11:39, Holger Schulz <holger.schulz at durham.ac.uk
>>> <mailto:holger.schulz at durham.ac.uk>> wrote:
>>>
>>> Hi,
>>>
>>> I wrote a script that does some trivial checks for the reference
>>> data files shipped with rivet and their counterpart obtainable from
>>> HepData.
>>>
>>> It generates reports which can be found here:
>>>
>>>     https://users.hepforge.org/~holsch/HepDataRivetReports/
>>>
>>> There is quite a number of inconsistencies.
>>>
>>> Quite often in LHC analyses the dxy tags differ, a number of
>>> ref data sets differ in the number of data points between rivet and
>>> hepdata
>>> and of course there are several analyses where the data is not in hepdata
>>> at all.
>>>
>>> And then there are some "goodness of fit" issues where I compare
>>> two scatters as such (can clearly be improved):
>>>
>>>
>>>     def gof(P1, P2):
>>>         chi=0.0
>>>         for num, p in enumerate(P1):
>>>             chi += (p.y - P2[num].y)
>>>             chi += (p.yErrAvg - P2[num].yErrAvg)
>>>             chi += (p.x - P2[num].x)
>>>             chi += (p.xErrAvg - P2[num].xErrAvg)
>>>         return chi
>>>
>>>
>>> So yeah I don't really know what course of action to take but it seem
>>> quite clear
>>> that HepData and rivet have diverged quite substantially.
>>>
>>> Holger
>>>
>>>
>>>
>>> _______________________________________________
>>> Rivet mailing list
>>> Rivet at projects.hepforge.org <mailto:Rivet at projects.hepforge.org>
>>> https://www.hepforge.org/lists/listinfo/rivet
>>
>>
>>
>>
>>
>>
>>  —
>>
>>  Dr. Christian Gütschow
>>
>>  Department of Physics and Astronomy
>>  University College London
>>  Gower Street
>>  London WC1E 6BT
>>
>>  > D10 Physics Building
>>  > +44 (0)20 7679 3775
>>  > chris.g at cern.ch <mailto:chris.g at cern.ch>
>>
>>
>>
>>
>>
>>
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>> Rivet at projects.hepforge.org
>> https://www.hepforge.org/lists/listinfo/rivet
>>
> _______________________________________________
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> Rivet at projects.hepforge.org
> https://www.hepforge.org/lists/listinfo/rivet
>


-- 
Dr Andy Buckley, Lecturer / Royal Society University Research Fellow
Particle Physics Expt Group, University of Glasgow