[Rivet] Fwd: Re: rivet analysis for DELPHI

[Holger Schulz]

Forwarding to the rivet list.

-------- Original Message --------
Subject: 	Re: rivet analysis for DELPHI
Date: 	Tue, 26 Jun 2012 13:36:38 +0200
From: 	Sharka Todorova <sarka.todorova at cern.ch>
To: 	Holger Schulz <hschulz at physik.hu-berlin.de>




  Hi Holger,

    another subject : I am running Pythia8 with helix to fix 
fragmentation parameters on DELPHI_1996_S3430090
  and I found couple of problems there

  1/ the data are not consistent : the inclusive spectra are supposed to 
be normalized to the measured charged multiplicity
   but there is a small difference ( plot 35, the measured N_ch gives 
20.92 , but the normalization of inclusive spectra is done to 21.05 )

  2/ the plot 8, ln(1/x) has wrong normalization altogether - the 
integral gives just 19.94, i.e. 5.5% below the integral for other plots.

   The MC processed through corresponding rivet analysis has the 
normalization as expected, i.e. integrals of inclusive spectra correspond
  to value of  d35_x01_y01.

     I  think the data ( minimally for d08_x01_y01) should be corrected 
  - I know people who worked on the paper (Klaus Hamacher,...).

   This plot allways gave bad chi2, that's how I found out.

        What do you think ?  The impact on fits is visible ( better chi2 
after correction )

        cheers,

  Sharka


On Jun 26, 2012, at 1:19 PM, Holger Schulz wrote:

> On 26/06/12 13:07, Sharka Todorova wrote:
>>
>> are we talking about plots.pdf file attached to your first mail today 
>> (168kb) ? it contains not-so-well reproduced b-jets plots,
>> not the power spectra from azimuthal ordering ...  can you please 
>> send them once more ?
>>
>>   thanks, cheers,
>>
>>   Sharka
>>
>>
>> On Jun 26, 2012, at 1:01 PM, Holger Schulz wrote:
>>
>>> On 26/06/12 12:58, Sharka Todorova wrote:
>>>>
>>>>  yes, but for b-jets !  I guess the rivet analyses got mixed in 
>>>> your files.
>>> ??? I copied the routine ATLAS_2012_I1091481
>>> from your public, was that wrong? The plots I sent show the same
>>> distributions as are shown http://arxiv.org/abs/1203.0419
>>>
>>> Is that wrong?
>>>
>>> Holger
>>>>
>>>>   Yes, for azimuthal ordering one should run full 
>>>> minbias+diffractive mixture
>>>>
>>>>     Sharka
>>>>
>>>> On Jun 26, 2012, at 12:51 PM, Holger Schulz wrote:
>>>>
>>>>> On 26/06/12 12:49, Sharka Todorova wrote:
>>>>>>
>>>>>>  hi Holger,
>>>>>>
>>>>>>    thanks for the trimming option - but the plots are not from 
>>>>>> the azimuthal ordering ?
>>>>> It's a private run of Pythia8 just 10k events.
>>>>>>          Sharka
>>>>>>
>>>>>> On Jun 26, 2012, at 12:37 PM, Holger Schulz wrote:
>>>>>>
>>>>>>> <plots.pdf>
>>>>>>
>>>>>
>>>>
>>>
>>
>
> <plots.pdf>


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