[Rivet] Rivet routine for D0_2000_I503361

[Gavin Hesketh]

Hi,
sorry for weighting in again, but I'm pretty sure there should not be an 
ET cut on the electrons... Section V in the paper mentions correcting 
for this. Do the distributions look completely off if you remove that cut?
cheers,
Gavin

On 01/10/15 16:01, Holger Schulz wrote:
> On 01/10/15 15:43, Frank Siegert wrote:
>> Hi Holger,
>>
>> given that you have committed this analysis now as validated (using
>> Sherpa), I was just wondering whether the normalisation looks as
>> expected. Simone mentioned that his validation was done using Pythia8,
>> and it would be surprising that Pythia8 matches the cross section
>> correctly -- one would expect a global ~ -15% offset due to the
>> missing NLO accuracy.
>>
>> Have you compared it against NLO Sherpa (or LO Sherpa scaled with an
>> appropriate k-factor) and see good agreement? Anything else could
>> point to missing (lepton?) cuts.
>
> Hi Frank,
>
> the paper states an ET cut for the electrons of at least 25 GeV, I
> implemented
> that one. I ran Sherpa with LJET=1, NJET=1 using the example setup and see
> a shape very much compatible with data. The offset is about 15-20%. I ran
> 100000 weighted events using trunk without MI_HANDLER
>
> Here is the shape comparison for the peak region:
>
>     https://users.hepforge.org/~holsch/d01-x01-y01.pdf
>
> And this is the distribution up to zpt=150 GeV:
>
>     https://users.hepforge.org/~holsch/d01-x01-y01_150GeV.pdf
>
> Cheers,
> Holger
>
>> Cheers,
>> Frank
>>
>>
>>
>> On 28 September 2015 at 11:39, Simone Amoroso<simo.amoroso at gmail.com>  wrote:
>>> Hi Frank,
>>>
>>> For the selections (since the paper was not really clear), I copied what was used in the Z/W pT ratio (already in RIVET),
>>> which makes use of the same selections.
>>>
>>> The validation was simply made by running Pythia8, I definitely didn’t apply k-factors,
>>> but I might have rescaled the prediction to data (I honestly don’t remember).
>>>
>>> cheers,
>>> Simone
>>>
>>>> On 23 Sep 2015, at 16:07, Frank Siegert<frank.siegert at cern.ch>  wrote:
>>>>
>>>> Hi all,
>>>>
>>>> I have just started to look at this to get it in for the imminent
>>>> release. The paper is at first glance not very clear on which
>>>> selection requirements were retained for the final cross section
>>>> measurement. Simone, do you remember, why you removed the electron ET
>>>> cuts? Did they correct completely for the electron acceptance?
>>>>
>>>> And for your validation plot, I was wondering which Monte-Carlo did
>>>> you run, and is the prediction scaled by a (K-)factor?
>>>>
>>>> Cheers,
>>>> Frank
>>>>
>>>>
>>>>
>>>> On 1 July 2015 at 15:57, Chris Pollard<cpollard at cern.ch>  wrote:
>>>>> Hi Simone,
>>>>>
>>>>> In this analysis I notice that there is no lepton pt cut imposed in the
>>>>> ZFinder. Was this intentional? I guess at least one lepton needs to have pT
>>>>>> 10 GeV to fire the trigger?
>>>>> Chris
>>>>>
>>>>> On Thu, May 7, 2015 at 9:51 AM, Andy Buckley<andy.buckley at cern.ch>  wrote:
>>>>>> On 07/05/15 07:55, Simone Amoroso wrote:
>>>>>>> Hi Andy,
>>>>>>>
>>>>>>> I made a new RIVET routine for the D0 RunI measurement of the Z pT.
>>>>>>> Below a validation plot and attached the tarball.
>>>>>> Thanks Simone, I've put it in the analysis contrib area and we'll get it
>>>>>> into a new Rivet release as soon as possible.
>>>>>>
>>>>>> Andy
>>>>>>
>>>>>> --
>>>>>> Dr Andy Buckley, Lecturer / Royal Society University Research Fellow
>>>>>> Particle Physics Expt Group, University of Glasgow
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