<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: arial,helvetica,sans-serif; font-size: 12pt; color: #000000'>There must be polar angle dependence of the correction because particle see different different pieces of IBC. So, the fact you see it is a good thing. To check if its correctly accounted for one needs to look at some missing mass peak position dependence on the polar angle. After correction is applied there should not be dependence if eloss works correctly. Before the correction you may see similar discontinuities as you see in delta E and they should be at the same angles.<br><br><div><span name="x"></span>-Eugene<span name="x"></span><br></div><br><hr id="zwchr"><blockquote style="border-left:2px solid #1010FF;margin-left:5px;padding-left:5px;color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"><b>From: </b>"Haiyun Lu" <hlu@jlab.org><br><b>To: </b>"g14 run" <g14_run@jlab.org><br><b>Sent: </b>Wednesday, April 23, 2014 4:06:27 PM<br><b>Subject: </b>Re: [G14_run] Fwd: CLAS CVS: packages/eloss HDICE.F HDICEupstream.F<br><br>
<div class="moz-cite-prefix">I found a mistake in my code. The y
axis was labeled "delta E", which is supposed to be the difference
of energy before and after correction. But the histogram was
filled with "delta momentum". I produced a correct histogram and
attached (eloss.png).<br>
<br>
To solve the issue that there are multiple bands in the histogram
of energy loss vs. momentum as shown by Dao and Peng, I generated
protons and pions of various momenta, polar angles, and vertex
positions. I attached a pdf file to demonstrate them. As a
summary, the polar angle dependence of the energy loss produces
the multiple bands. <br>
<br>
<br>
On 04/14/2014 10:00 AM, Haiyun Lu wrote:<br>
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<blockquote cite="mid:534BE9F4.3070501@jlab.org">I
attached the new result of eloss correction for proton and pi-.
<br>
<br>
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<br>
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