<div dir="ltr">Hi powel , Ilia ,<div>Please take a look the slides I have for todays meeting .</div><div> I use the Tfraction fitter to fit the data and get the cross section result, the fitting is much better ,</div><div>but I still have some jump for the cross section , so I checked the calculation all over again and found a problem.</div><div><br></div><div>in the simulation in my understanding ,the N-input for each Echannel should be like :</div><div>cross-theory = Yield-mc / (const * flux * Acc ) where const is constant from target information , Acc is acceptance = Yield-mc / N-input ,</div><div>so cross-theory = Yield-mc *(N-input/Yield-mc) /(const*flux)</div><div> cross-theory = N-input /(const*flux)</div><div> N-input = const*flux*cross-theory </div><div><br></div><div>means N-input should proportional to the cross-theory </div><div>but if you check the last slides plot , the N-input number I got looks not right behavior . </div><div>Please correct me if i am wrong .</div><div>Yang , would you please also check the simulation input / flux for pi0 ? see if it is mach the theory shape ?</div><div><br></div><div>Cheers</div><div>Li </div></div><div class="gmail_extra"><br><div class="gmail_quote">2016-02-11 22:18 GMT-05:00 Yang Zhang <span dir="ltr"><<a href="mailto:yzhang132@gmail.com" target="_blank">yzhang132@gmail.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div><div style="font-size:13px">Dear collaborators,</div><div style="font-size:13px"><br></div><div style="font-size:13px">We'll have our weekly meeting on February 12th, this Friday afternoon at 1:30pm in F227. </div><div style="font-size:13px"><br></div><div style="font-size:13px">please log onto <a dir="ltr" href="https://jlab.bluejeans.com/2265619819/" target="_blank">https://jlab.bluejeans.com/2265619819/</a> to view the sharing. And Make sure your microphone and speaker are ok before entering our meeting.</div><div style="font-size:13px"><br></div><div style="font-size:13px">You can also dial phone number <a dir="ltr" href="tel:+1%20888-240-2560" target="_blank">+1 888-240-2560</a> to join the meeting with meeting ID <a href="tel:2265619819" value="+12265619819" target="_blank">2265619819</a>. </div><div style="font-size:13px"><br></div><div style="font-size:13px">Meeting webpage:</div><div style="font-size:13px"><a href="http://wwwold.jlab.org/primex/weekly_meetings/primexII/slides_2016_02_12" target="_blank">http://wwwold.jlab.org/primex/weekly_meetings/primexII/slides_2016_02_12</a></div><div style="font-size:13px"><br></div><div style="font-size:13px">Directory for your presentation files: </div>/group/<span><span><span><span>primex</span></span></span></span>/html/weekly_meetings/primexII/slides_2016_02_12<br><br></div>Best<span class="HOEnZb"><font color="#888888"><br><br></font></span></div><span class="HOEnZb"><font color="#888888">Yang</font></span></div>
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