[d2n-analysis-talk] cos(phi) in two 4.7-GeV run sets

[Brad Sawatzky]

On Wed, 24 Aug 2011, Diana Parno wrote:

> However, cos(phi) enters into the asymmetries as a coefficient, and
> if you look at the y-axis scale you see that we are talking about
> very, very small variations. At x = 0.175, the blue point is 0.011%
> higher than the red point; at x = 0.875, it is 0.043% higher. (Yes,
> we are talking parts in ten thousand.) This is a negligible source
> of error on the asymmetry. I think it would be worthwhile to repeat
> this check after the five-pass data are analyzed, sampling a few
> different run sets to ensure that there isn't a big shift between
> any of them, but we should not lose any sleep on this.

Sounds good.  Thanks a lot for following up on this.

-- 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
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  discoveries, is not "Eureka!" but "That's funny..."   -- Isaac Asimov