[d2n-analysis-talk] Revised A1n letter for submission to Physics Letters B

[David Flay]

Hi Diana,

The new draft looks good!

On Mon, Nov 17, 2014 at 7:19 PM, Diana Parno <dparno at uw.edu> wrote:

>
> I have a couple of particular questions for the crowd here:
>
> 1 - The length requirements for Physics Letters B are a lot more
> forgiving, so there is now room to include a table with our parallel and
> perpendicular asymmetry results on 3He. That kind of thing is useful for
> the people doing global analyses. Of course this should go in the archival
> paper too, but what are your thoughts on including such a table in this
> letter?
>

​I suppose we could add these data into this paper as well, but I am
uncertain as to how much it would add to the discussion?  Though I can't
see that as being a bad thing.  And, as you pointed out, these are already
to be included in the long paper.  It should be noted that we would have to
add tables for g_1/F_1 and A_1 on 3He for both the E = 4.74 GeV and 5.89
GeV data​.  The data we have in the paper currently are averaged *after*
nuclear corrections are applied to the 4.74 and 5.89 GeV data separately.


> 2 - One of the referees for PRL asked for more theoretical uncertainties
> in our plots. I am working on trying to plot error bands for the pQCD
> parameterizations (which do give error bars on each parameter) but will
> stop if there is a strong consensus that this is not worthwhile.
>

​This would be interesting to see, but as Matt pointed out ​our precision
isn't good enough to discern between the models.  Additionally, does
varying the parameters within their errors for a given fit yield the same
errors one obtains by using the Hessian matrix that theory groups tend to
report?


Best regards,

David

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David Flay
Post-doctoral Research Associate
University of Massachusetts, Amherst
Department of Physics
Lederle Graduate Research Tower, Rm 423
710 N Pleasant St
Amherst, MA 01003-9305

office phone: (413) 545-0586
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