<br><br><div class="gmail_quote">On Sat, Feb 5, 2011 at 2:20 PM, David Flay <<a href="mailto:flay@jlab.org">flay@jlab.org</a>> wrote:<blockquote class="gmail_quote">
The ratio was calculated as follows:<br>
<br>
The baseline cut was good electrons (beta > -0.15, GC ADC, PR, T3, EDTM,<br>
VDC, and target cuts on y, z, and dp).<br>
<br>
I then obtain the number of events from this histogram. Call this quantity<br>
(A).<br>
<br>
Then, I impose the cut (beta > -0.15)&&(beta < 0) on top of the other cuts<br>
already mentioned, and I obtain that number (B).<br>
<br>
The ratio is computed as R = A/B, with its error E calculated as:<br></blockquote><div><br></div><div>R = B/A, not A/B. </div></div><br clear="all"><br>-- <br>-----------------------------------------------------------<br>
David Flay<br>Physics Department<br>Temple University<br>Philadelphia, PA 19122 <br><br>office: Barton Hall, BA319<br>phone: (215) 204-1331<br><br>e-mail: <a href="mailto:flay@jlab.org">flay@jlab.org</a> <br>
<a href="mailto:flay@temple.edu">flay@temple.edu</a><br><br>website: <a href="http://www.jlab.org/%7Eflay">http://www.jlab.org/~flay</a><br> <a href="http://quarks.temple.edu">http://quarks.temple.edu</a><br>
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