1. 1 Athena Issues and B-tagging Efficiency Monica Dunford continuing the work of Meena Narain

2. 2 Athena Issues From the CSC production experts –Athena version 12.0.31 is good for simulation and digitization –Athena version 12.0.5 should be used for reconstruction –Version 12.0.4 has been abandoned Athena 12.0.5 will be ready next week –O. Jinnouchi “This statement is true regardless of which week you are asking”

3. 3 The Current Issues Impact parameter distribution of WH->bb similar to WH->uu Plot from Meena’s July 2006 talk Problem caused by large number of duplicate tracks from ftksim

4. 4 The Current Issues Meena applied several selection criteria to reduce the number of tracks FTKsim duplicate track issues have since then been solved with Hit/Road Warriors

5. 5 The Next Goals With FTKsim Road warrior and upcoming 3-pixel layer and new training –Re-calculate the b-tagging efficiency of FTK –Hopefully without reliance on the selections cuts used by Meena

6. 6 The Current Status FTKsim in transitional state –Can’t use athena v12 or new training, 3-pixel layers, etc Only have pattern banks from V10 –Using FTKsim version 0.7.1 –Athena v10 MC samples (generated by Meena) Use Meena’s v10 MC samples but re- processed with FTKsim using roadwarrior –With Guido and Francesco’s help, this is up and running now

7. 7 Next Steps Finish re-processing of FTKsim on Meena’s samples using improved FTKsim version Establish a procedure of determining the b-tagging efficiency that can be easily re-applied using new training and Athena v12