[Olympus] Talk on Monday

[Norair Akopov]

Dear Nicola,

Due to I'm not sure to be able to connect via EVO tomorrow, here are my 
questions, which I hope can be addressed during your talk:

- I suppose you are using also Z-vertex difference cut, if so please give 
the window?

- on page 3 you give the asymmetric coplanarity window:
 3.06< \Delta \phi  <3.20
then on page 4 your coplanarity window become symmetric:
 176< \Delta \phi  < 184
which one you are using to produce the final results?

- on page 4 your window for P_z momentum sum of the left and right tracks 
is 1800 - 2200 MeV, why you are using this +/-200 MeV window? I think as 
usually you should make a Gaussian fit for the corresponding distribution   
 and then use +/- 3(2,1) sigma cut? It seems your 200 MeV is even less 
than 1 sigma in this case?

-as it was expected due to worser momentum resolution your reconstructed 
beam energy distribution (E_{0,2}) looks much wider and shifted in 
respect to the expected 2 GeV mean value in comparison with the  E_{0,1} 
defined with the use of only lepton and proton angles. Then you are 
showing on page 10 the Q2 distribution. Now the question is how you 
defined Q2 in this case: via only lepton angle, or via momentum and angle 
(similar to how you defined W on page 9)? 

- are you estimated necessary corrections due to possible overlap of 
the lepton and proton ToF mean time distributions? 

- how look the same studies for positron runs?


Thanks in advance.

Best regards,
Norik


On Fri, 17 Jan 2014, Nicola 
D'Ascenzo wrote:

> Dear collegues,
> please find on the wiki the preliminary slides of my talk on Monday,
> 
> thank you,
> Best Regards,
> 
> Nicola
> 
> 
> Dr. Nicola D'Ascenzo
> 
> 
> DESY, Notkestr.85, D-22607 Hamburg,  Germany, Bldg. 01e ,  Rm.01.544
> Tel.:  +49-40-8998-1598                        Fax: +49-40-8998-4306
> 
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