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Greetings G12'rs<br>
<br>
<br>
I have done a crude correction to the 2 runs I showed today (56515
& 57130). Keep in mind that these runs are 10 MeV different in
the mm/spectrum.<br>
<br>
I have applied a beam correction as follows.<br>
<br>
Pb = 4-vector of beam<br>
Pt = 4-vector of target<br>
Ppip = 4-vector of pi+<br>
Ppim = 4 vector of pi-<br>
X = scale factor<br>
mp = proton mass<br>
<br>
(XPb + Pt - (Ppip+Ppim))^2 = mp^2<br>
<br>
Solving for X with the data and looking at the distribution I came
up with a factor of <font color="#cc0000"><b>1.00509</b></font> for
the run 56515 and <font color="#cc0000"><b>1.0</b></font> for run
57130, under exclusive cuts for the missing proton.<br>
<br>
I then applied this correction of <font color="#cc0000"><b>1.00509
</b><font color="#000000">to run 56515 </font></font>and
recalculated the mm/spectrum.<br>
<br>
Attached is a plot of the corrected and uncorrected.<br>
<br>
I believe this might be a suitable correction to explore.<br>
<br>
BR<br>
MK<br>
<br>
<br>
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