[d2n-analysis-talk] PR E/p Calibration

[David Flay]

I don't think so, but I'll take another look -- to get E/p to be at 1 was
altering my coefficients by lowering each value by 5% or so (based on how
E/p looked, I fudged the coeffs to get the peak closer and closer to 1)

On Tue, Oct 27, 2009 at 5:28 PM, Brad Sawatzky <brads at jlab.org> wrote:

> On Tue, 27 Oct 2009, David Flay wrote:
>
> > I've attached a plot of the position of E/p as a function of momentum.
> > Since we do not have a full shower, I don't expect the value to be around
> 1,
> > however there is a clear momentum dependence -- I was expecting just the
> > opposite trend shown here.  Shouldn't the E/p value be greater at lower
> > momentum, since the particles are depositing most (if not all) of their
> > energy in the PR (for p = 0.6, say)?  But, this trend suggests that I'm
> > getting larger energy deposition at higher momentum?
>
> I agree, the trend in the plot isn't what I expected.  At one point you
> had some corrections in your code to get E/p centered on 1 for all
> energies -- are you sure those (old) corrections aren't still being
> applied somehow?
>
> -- Brad
>
> --
> Brad Sawatzky, PhD <brads at jlab.org>  -<>-  Jefferson Lab / Hall C / C111
>  Ph: 757-269-5947 -<>- Pager: 757-584-5947 -<>- Fax: 757-269-7848
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-- 
-----------------------------------------------------------
David Flay
Physics Department
Temple University
Philadelphia, PA 19122

office: Barton Hall, BA319
phone: (215) 204-1331

e-mail: flay at jlab.org
          david.flay at temple.edu

website: http://www.jlab.org/~flay
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