Strangeness Phone Meeting 2007/5/14

15 May 2007 07:54:37 Attending: Matt, Helen, Jun, Marcelo, Marek, Ant, Lee, Christine, Betty, Sevil Time        Talk        Presenter 12:00        SQM Analyses Reports ( 00:25 ) 0 files        Betty, Marek, Christine, Jiaxu, Ant, Jun 12:25        Kaon discrepancy status ( 00:15 ) 2 files        Lee, Jun 12:40        EPOS and STAR d+Au data ( 00:15 ) 0 files        Sevil 12:55        AOB ( 00:05 ) 0 files         SQM Analysis Reports Betty. Working on getting v2 for the 0-12% sample. This would be for h±, use nq scaling as before to estimate Omega v2. Aihong is providing assistance. Marek. Aim is to reproduce Jana's delta-phi result but with additional anti-merging correction and to get delta-eta projections. Have switched to using 'Yale Trees' in order to go to lower pt (reprocessing through RCF was taking too long). This would be for h-h only as there is currently insufficient V0 daughter info to do the anti-merging cut for V0-h correlations. This should be about to change though. [I have that 7M out of 20M events were done already by Marek and that a new run to get a set of Yale Trees with all V0 info is ready. I assume these are two separate things.] A fall back solution of using the 'mirror image' trechnique is available [does this work for delta eta though?] Christine Working to get efficiency correction for identified associated particles (i.e. V0) Has an example code from Ant to extract efficiencies from the flat pt embedding done for Cu+Cu Currently that cover eta ±0.5 and eta ±1 is required. Will scale Au+Au embedding by result to extend to larger eta. There should anyway be new Cu+Cu embedding coming. Jiaxu Was available for the meeting (time zone issue!) but sent update later to say that he is working on using the highest pt bin (6,9) GeV and some simulations. Ant. Working to finish feed-down correction and compare with Matt's method (working out Xi eff. as a function of the Lambda pt vs scaling to the Xi distribution in embedding [this distinction needs a better explanation sometime]) Also checking the errors on dN/dy from the extrapolation of the pt spectra to pt=0. Jun. Student working on incorporating SVT/SSD into Xi and Omega analysis. Presumably not practical on the timescale of SQM though [production only just getting underway and need to develop embedding chain to include SVT/SSD] Comment from Matt. Main job is to get embedding re-run, if this is indeed necessary. Kaons.