[Rivet] Rivet routine for D0_2000_I503361

[Holger Schulz]

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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>>>>
>>>>
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