Hi everybody,<br>it is important to measure recoil particle. This is because in QCD<br>many observables for semiinclusive processes depend strongly on <br>the mass of associated <a href="http://system.cf">system.cf</a> figures in our paper B.Blok,L.Frankfurt and M.Strikman. If to ignore this property of QCD evolution bizarre effects would<br>
arise which contradict to common sense. This is exactly what happen at HERA<br>in the interpretation of data on the process: \gamma^*+p\J/\psi +rap gap +Y<br>Best Leonid<br><br><br><div class="gmail_quote">On Thu, Mar 18, 2010 at 7:43 PM, Dipangkar Dutta <<a href="mailto:d.dutta@msstate.edu">d.dutta@msstate.edu</a>> wrote:<br>
<blockquote class="gmail_quote">Hello All,<br>
Here are the minutes of today's phone meeting, they are also posted on the Wiki.<br>
<a href="https://eic.jlab.org/wiki/index.php/EA_color_in_nuclei:_meeting_minutes_3/18/10">https://eic.jlab.org/wiki/index.php/EA_color_in_nuclei:_meeting_minutes_3/18/10</a><br>
<br>
== Participants ==<br>
<br>
''Lamiaa El Fassi, Wim Cosyn, Gerry Miller, Dipangkar Dutta''<br>
<br>
Gerry gave us a quick update from the Rutger's EIC meeting<br>
<br>
We discussed the point that for most exclusive reactions, the lack of<br>
missing mass resolution implies that, we have to detect the recoil particle to<br>
ensure exclusivity. In many cases the recoil is at very forward angles and<br>
detection would be difficult. For each reaction under study we should list the<br>
kinematics for all reactions products so that the detector requirements can be<br>
specified.<br>
<br>
Progress on the reactions under study.<br>
<br>
* Coherent diffractive &rho;<sup>0</sup>, J/&Psi; production from nuclei<br>
(Lamiaa)<br>
Event generator is being modified for the collider geometry and it will be used<br>
with a PYTHIA code under development.<br>
<br>
* Exclusive &pi;, p, pp production from nuclei. (Wim)<br>
Kinematics have been simulated, will also look at the kinematics of the recoil<br>
particle<br>
<br>
* diffractive di-jet, and high p<sub>T</sub> di-jet production (DD)<br>
Determined to be not suitable for mEIC energies<br>
<br>
Gerry mentioned Mark Strikman and S. Kumano's work on a couple of new<br>
observables:<br>
2-to-3 hard hadronic processes and large angle two body scattering.<br>
He also mentioned that at the Rutgers meeting Stan Brodsky talked about<br>
several new observables.<br>
<br>
We will look into these observables and their feasibility at the EIC.<br>
<br>
<br>
<br>
--<br>
Dipangkar Dutta Assistant Professor<br>
Department of Physics & Astronomy<br>
Mississippi State University<br>
Rm 010C Hilbun Hall, P.O. Box 5167<br>
Mississippi State, MS 39762-5167<br>
Ph: 662 325 3105 Fax: 662 325 8898<br>
email: <a href="mailto:d.dutta@msstate.edu">d.dutta@msstate.edu</a><br>
webpage: <a href="http://ra.msstate.edu/%7Edd285">http://ra.msstate.edu/~dd285</a><br>
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</blockquote></div><br>