[Clascomment] OPT-IN: Target and Beam-Target Spin Asymmetries in exclusive Ï+ and Ïâ electroproduction with 1.6 to 5.7 GeV elec trons

[Dave Ireland]

Dear Peter,

Thank you very much for your message, and for addressing all my comments.

There is a debate to be had about extracting asymmetries, but I 
certainly would not want to delay the progress of paper at this stage 
when the messages from the paper are already clear.

I wish you luck with the submission.

Best wishes,

Dave



On 03/02/16 23:07, bosted at jlab.org wrote:
>> Dear Peter et al.,
>>
>> This is a very nice analysis that has clearly been the result of a great
>> deal of effort. Most of the typos I spotted have been highlighted by
>> others, but here are a few additional comments:
>>
>> - The labelling of each experimental part (Table II, and text) is
>> undoubtedly meaningful within the eg1b run group, but I am not sure is
>> this helps the general reader. Might it be clearer to label them as
>> sequential integers or letters?
> FIXED, by explaining the nomenclature of existing names.
>
> - The font sizes in figures 9-24 are probably too small for Phys Rev.
> It might be worth increasing them before submission.
> WILL WAIT FOR PRC feedback. I tried to make them exactly the min. size.
>>
>> - On some of the panels there are error bars in the asymmetries that cover
>> more than the entire range. I have a big problem with that. Before you
>> make a measurement what you know with absolute mathematical certainty is
>> that the true value must be in the range [-1,1]. In other words the
>> statistical support is only valid in that range. If you have error bars
>> that are bigger than this range, it implies that you actually now know
>> LESS that you did before the measurement, which is absurd. As these points
>> add nothing to the comparison with the models, I would suggest that they
>> be removed from the plots.
> REMOVED. But to clarify, these are *not* raw asymmetries which of course
> are bounded by [-1,1]. These are raw asymmetries divided by a small number
> (call if f). so the actual bounds are [-1/f, 1/f]. In parity violation
> experiments, we average missions of measurements (many of which ma violate
> physics bounds) to get a meaningful averaged asymmetry. If we were to cut
> out values that were outside the physics limits, we would bias the results
> to the wrong answer.
>>
>> - Could you please add the following to the acknowledgments, to satisfy
>> our grant condition on all co-authored publications:
>> "United Kingdom's Science and Technology Facilities Council (STFC)"
> DONE (automatic).
>>
>> Best wishes,
>>
>> Dave
>>
>
>
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