[Olympus] Latest version of the PRL

Alexander Kiselev kisselev at mail.desy.de
Fri Nov 4 16:54:52 EDT 2016


   Dear colleagues,

   please few comments/questions from my side (and I'd appreciate if the 
next iteration of the draft had line numbers):

   p.2: "lepton sign" -> "lepton charge sign"
   p.2: -> "passed through unpolarized internal gas target" ("windowless"
         is misleading; indeed it had side windows);
   p.2: -> "low-energy electrons from Moeller and Bhabha scattering"

   p.3: few missing items in tab.1 were mentioned already; other issues:
          - what about trigger efficiency?;
          - also different choice of rad.corrections is not considered as syst.error?;
          - it would probably make sense to break down this table in
            correlated and uncorrelated ones explicitely;
          - what is the meaning of [0.04-0.13] range for beam energy contribution?;
          - I was under impression, that LR-discrepancy was much bigger,
            than 0.25%; the plot which Axel showed last time is based on
            all 4 analyses?;

   I have a feeling it is confusing to quote errors in % in tab.1 and 
fig.2, and in absolute units in tab.2 .

   MIE method description can be done better. I'd at least mention, that we
are taking about ep-elastic events in the same SYMB acceptance.

   Up to 6% rad.correction effect in fig.2 means exactly what? That 
uncorrected ratio at low epsilon would be off by 6% away from ~1.00 or 
that e+ and e- rates are affected by this amount in a roughly correlated
fashion?

   Best regards,
     Alexander.




On Wed, 2 Nov 2016, Douglas K Hasell wrote:

> Dear Colleagues,
>
> 	Attached is the latest version of the PRL paper where the comments discussed on Monday and those received up until today have been implemented.
>
> 	Please review and send any additional comments by 17:00 EST, Friday, November 4 after which we will distribute what we hope will be the final version for discussion on Monday, November 8 during the collaboration meeting.
>
>                                                     Cheers,
>                                                             Douglas
>
> 26-415 M.I.T.                                  Tel: +1 (617) 258-7199
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>
>
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