Re: [BLAST_ANAWARE] d(e,e'p)n missing mass and momentums plots

From: Chris Crawford (chris2@lns.mit.edu)
Date: Thu Jul 15 2004 - 11:49:48 EDT


Aaron Joseph Maschinot wrote:

>here are some d(e,e'p)n missing mass and missing momentum plots that i was
>thinking about sending to John (ulp, i guess i just did).
>
>to those who care, these plots are all of the polarized deuterium data
>taken since the thursday before the 4th of july weekend. the missing mass
>used to peak differently in the two sectors (the left peaked at 0.977GeV
>while the right peaked at 0.940 (i.e. the mass of the neutron)). however,
>the new data shows that both distributions now peak at 0.939 as they
>should. i don't know if this "correction" has to do with the recrunch or
>what.
>
>
this is the result of michael's excelent work on the timing!
--chris

>the second plot is of missing momentum per Q2 bin as compared to an empty
>target. (the third plot is just a high-missing-momentum zoomed-in version
>of the second plot). you can see that we appear to NOT be background
>dominated until around 0.5 GeV, maybe (still not enough empty target
>statistics to make too much sense of it yet).
>
>aaron
>



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