<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Hi all, <br class=""><br class="">I have been running simulations using the new versions of GEMC and COATJAVA. For some reason, reconstruction using CLARA on farm didnt work. I am now running the reconstruction locally, but dont know if I will have enough time to produce new results for Marco by the end of today. I have put together a few slides using my old study. <br class=""><br class=""><div class=""><a href="https://userweb.jlab.org/~nicholas/vs/Omeg.pdf" class="">https://userweb.jlab.org/~nicholas/vs/Omeg.pdf</a><div class=""><br class="">From this, I get the following efficiencies (reconstructed events with 2Kplus 1positive pion and 1 negative pion — multiplied by the K^0 branching ratio divided by events thrown). From this, I get the following:<br class=""><br class="">T0.75 S06: Eff=0.3% <br class="">T-0.75 S06: Eff=0.83%<br class="">T0.75 S08: Eff=0.27% <br class="">T-0.75 S08: Eff=0.75%<br class=""><br class="">Using the production rate from the proposal (94 Omega/h) which was based on 8.7 x 10^{31} tagged luminocity and 0.3nb cross section, we expect to have Rate of reconstructed Omega:<br class=""><br class="">T0.75 S06: 0.28/h<br class="">T-0.75 S06: 0.78/h<br class="">T0.75 S08: 0.25/h<br class="">T-0.75 S08: 0.70/h<br class=""><br class="">The detection of one of the decay products of the Omega (preferably the proton or pion) to impose a detached vertex cut to remove background, will decrease our reconstruction rate — I will study this using the higher statistic sample.<br class=""><br class="">Let me know what you think.<br class="">-Nick<div class=""><br class=""></div><div class=""><br class=""></div></div></div></body></html>