[d2n-analysis-talk] A_1^n Projected Statistical Error

[Brad Sawatzky]

On Fri, 03 Sep 2010, David Flay wrote:

> I have uploaded to the Wiki my calculation  for the projected
> statistical error on A_1^n, along with a plot containing the current
> world data on A_1^n, with the statistical errors calculated at 5-pass
> superimposed for comparison.  I have also included Matt's calculations
> of the A_{\perp} statistical error for the same 5-pass data.

A few questions/comments:

- In the caption for Table 1, say something like:
  ... using the BigBite data from runs 2022---2054 (E_beam = 4.73 GeV/c.)
  Make similar additions in the other Table captions.

- (Minor typesetting quibble) There is no space between the number and
  the dash when you list a range.  The LaTeX code for a range should be:
    2022--2054
  not
    2022 - 2054, nor 2022 -- 2054, nor 2022-2054.
  The double dashes generate an en-dash.

  Just FWIW, here is a good page of general typesetting and LaTeX tips:
    http://web.science.mq.edu.au/~rdale/resources/writingnotes/latexstyle.html
  Good things to keep in mind as you draft your thesis.


- Have the 3 days of unpolarized-beam running been excluded from this
  analysis?

- Why do we have so much parallel data at p=0.80 vs. the other points
  (Table 1)?

- I don't understand the "N_eff" quantity.  For the 4-pass data, N_eff
  is less than N_p, but for the 5-pass data N_eff > N_p.  I've read the
  description on p.2 a couple of times and still don't get it (maybe I
  just need more coffee or something...)

  Could you pick on momentum bin (say 1.20 GeV/c) and be a little more
  explicit on how you arrive at N_p, N_cut, and N_eff?

-- Brad

-- 
Brad Sawatzky, PhD <brads at jlab.org>  -<>-  Jefferson Lab / Hall C / C111
Ph: 757-269-5947  -<>-  Fax: 757-269-5235  -<>- Pager: brads-page at jlab.org
The most exciting phrase to hear in science, the one that heralds new
  discoveries, is not "Eureka!" but "That's funny..."   -- Isaac Asimov