1. ATLAS Physics at LBNL Jim Siegrist 25 February 2005

2. Near Term Physics Goals A number of us are not really familiar with LHC physics We need to bring ourselves up to speed so that we can knowledgably join the ATLAS physics groups We should focus our efforts and penetrate one ATLAS physics group to start I think the best choice is SUSY, as it is sufficiently challenging to prepare us well for many other topics that you personally may find more interesting Need to complement this with some study of selected SM processes – eg. Drell-Yan, Top

3. Some Process Cross Sections

4. Some Process Cross Sections (2)

5. Timeline It seems reasonable to try to bring the students up to speed to join ATLAS SUSY by say November this year (too aggressive?) Divide available time into three epochs with expected level of effort: — First 10 weeks (Q1) (March – Mid-May). Look at SM and SUSY processes at generator level (will need generator-ntuple and jetfinder for this (ok?)) Read TDR Ch 20…think about low-luminosity limits of existing analysis Read SUSY reference materials, more on ‘nuts and bolts’ of protons (TDR Ch 15,16,18 for SM processes) Sign up on ATLAS SUSY, SM mailing list Begin to think about analysis topics to pursue Expect to use some evenings and a weekend day on this

6. Timeline (2) — Second Quarter (Q2) (Mid-May – July) Learn to run ATLAS code – atlfast generator studies Study ATLAS SUSY notes Finish background reading Begin analysis projects in earnest Expect to spend about ½-1 day/week on this plus evenings and weekends — Third Quarter (Q3) (August-Oct) Full-blown analysis in process, of eventual interest to ATLAS Close look at SM processes as well Move to 1 day/week level of commitment Start to think about thesis topics of interest

7. First Steps – First Quarter Program Read TDR Compile reference list Need a web volunteer to document our work – leave path for future students/postdocs Continue Friday afternoon meetings to discuss progress, report on materials that we have read and digested or were unable to understand Download tools (JAS, ROOT) for looking at generated events and get your computer setup Consider a couple of generator level processes to start: — p+p -> Z -> f fbar — start with pure Z’s, then add SM background to see if you can still find them — post shared code on the web site

8. First Steps (2) Look at a specific SUSY production channel at generator level to see if we can reconstruct it at generator level, and understand the decay After those are done, move on to more SUSY decay modes in a similar vein