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Hello Mohammed,<br>
<br>
Nice, now I can see that the large momentum differences, delta_P, <br>
are at the ends of the target. So, it looks to me that the old and
new <br>
constants work the same way at the middle of the target while they <br>
are diverge at the ends. We may consider using the new ones if <br>
they are the correct ones. I do not know how to check this.<br>
<br>
Regards, Stepan<br>
<br>
<div class="moz-cite-prefix">On 1/14/13 2:14 PM,
<a class="moz-txt-link-abbreviated" href="mailto:hattawy@ipno.in2p3.fr">hattawy@ipno.in2p3.fr</a> wrote:<br>
</div>
<blockquote
cite="mid:61d29a9c1f4cf9a242d22a5cc26f03ff.squirrel@ipnwebmail.in2p3.fr"
type="cite">
<pre wrap="">Hello all,
Here you can find attached file for the results of the distributions,
For both the elastic events and good track events as well.
Best regards,
Mohammad.
</pre>
<blockquote type="cite">
<pre wrap="">Dear Mohammed,
These are interesting results. And as Stepan mentioned, the
difference between the new and old momentum as a function of
the track's z and phi would be very interesting to see. It
might also be interesting to remove the elastic requirement
and see how a larger kinematic range is affected (and get you
a lot of quick statistics), although it is of course important
to see the elastics separately too.
Regards,
Nathan
On Mon, 14 Jan 2013 08:38:53 -0600, <a class="moz-txt-link-rfc2396E" href="mailto:hattawy@ipno.in2p3.fr"><hattawy@ipno.in2p3.fr></a> wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Hi Stepan,
In Fact, due to the small number of events, we could not find big
differences. With the current number of elastic events, both of the
packages have showen almost the same distributions of delta_z and
delta_phi, but not exactly the same. Here i attached the plots of
delta_z for both setup parameters, you can have a look through them.
Now i am cooking data with size 20 times the data i started with, keep
in touch with the new results as soon as possible.
Ragards,
Mohammad.
</pre>
<blockquote type="cite">
<pre wrap="">Hello Mohammad,
Thanks for this nice analysis. Did you tried to see if there
is any Z-vertex or \Phi dependence to the momentum
difference.
Regards, Stepan
On 1/14/13 5:46 AM, <a class="moz-txt-link-abbreviated" href="mailto:hattawy@ipno.in2p3.fr">hattawy@ipno.in2p3.fr</a> wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Dear all,
For the comparison between the momentum distributions between the
old
setup parameters of delta_phi and the new ones i have extracted, we
have ~97 of the elastic events in the new setup which are common with
the old setup and we have ~1% differnce in the number of the elastic
events between the two setup ( 359 elastic events in the old data, 351
elastic events in the new one and 340 events common). For the momentum
differene distribution, you can have a look at the attached file, in
which
delta_p = new momentum - old momentum, just for the common elastic
events.
It is mainly a peak centered aroud zero, but there is a tail in the
positive side, in which the momentum constructed with the new
parameters
is higher than the old one. I could not conclude anything with this
number
of elastic events from the distributions of dedx vs. p.
In conclusion, we can go to the next cooking with the current
parameters.
Best regards,
Mohammad Hattawy.
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