[Olympus] Report to PRC

[Norair Akopov]

Dear Stan,

Well, if most of people agree to save this plot, I have to follow to 
majority :)

As to Elke's qualification, I agree she has enough to understand why 
people are showing MC-Data points separately in Log scale instead to show 
MC/Data ratio to recognize possible (and clearly seen in our case) 
essentially different shape for MC and Data, which will open the Pandora 
box.

Lets see..

Best regards,
Norik


   On Fri, 7 Feb 2014, 
Belostotski, Stanislav wrote:

> Dear Norik,
> The data were sent to us by Jan.So, this are the ones shown by Jan at
> PRC.We just put the MC curves on the data. Normalization is explained in
> the text.
> I am certainly in favor of keeping them in the report with comparison
> with MC curves. The idea is so simple, just to show that the
> spectrometer ROUGHLY follows  to  the MC expectations with  the cross
> section is changing in  a very wide range (3 order of value !!), which
> is certainly a good sign.
> It would be too naive to require for the ratio based on these results as
> everybody understands that without many  fine corrections (e.g.for  beam
> slope, beam energy variation, real normalization to Lumi, etc.)   to
> plot the ratio just does not make any sense.
> I am sure that Elke is well-enough-qualified to understand that.
> Cheers,  Stan
>
>
>
> On 07.02.2014 10:02, Norair Akopov wrote:
>>
>> Dear Colleagues,
>>
>> I still have a doubts concerning inclusion of Fig. 17 in present report.
>> I suppose the Data points for both e^- and e^+ were taken from old
>> spectrum presented by Jan on previous PRC meeting? If not, and this is a
>> new analysis, then I need the details on applied cuts etc. to produce these
>> data points (Stan?). Another point is that we are going to sell Elke this
>> "logarithmic mirage", which will immediately create from Elke
>> quite motivated requirement (as to my long collaborative work experience
>> with her :) to show the ratio plot. Of course on such ratio plot we will see
>> essential MC-Data disagreement (in scale , also in shape) even with applied
>> <arbitary> normalization for MC. Here the most dangerous point is that we can not
>> state that the reconstruction procedure applied to Data and MC is the
>> same, then no sense to make any comparison. At least we will need for
>> ratio plot detailed explanations for possible reasons of disagreement to
>> be also included in present report. I'm not sure at the moment we are
>> able to give reasonable explanations for present shape of MC-Data comparison
>> on the level of MC/Data ratio.
>>
>> This subject was already intensively discussed via email exchange, and I
>> think the most wise decision was already expressed: just exclude Fig. 17 from
>> present report.
>>
>>
>> Best regards,
>> Norik
>>
>> On Thu, 6 Feb 2014, Douglas
>> Kenneth Hasell wrote:
>>
>>> Dear Colleagues,
>>>
>>> 	Attached is the proposed final version of the report to the PRC.  Please read this and send me any comments before Friday, tomorrow, at 16:00 EST.  If there are no major changes I will send the report to Andy White.
>>>
>>> 	This is also on the Wiki:
>>>
>>> https://olympus-docu.hiskp.uni-bonn.de/dokuwiki/doku.php?id=reports
>>>
>>>                                                     Cheers,
>>>                                                             Douglas
>>>
>>> 26-415 M.I.T.                                 Tel: +1 (617) 258-7199
>>> 77 Massachusetts Avenue                       Fax: +1 (617) 258-5440
>>> Cambridge, MA 02139, USA                      E-mail: hasell at mit.edu
>>>
>>>
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