1. M. Brooks, 28-Mar-02 Heavy/Light meeting 1 Muon Analysis Work Getting Code ready for first data pass - DONE Get ready for second pass on DSTs - muon identification road finding redone, muon tracker track finding redone tracks will be refit, ghost rejection, etc. reapplied possibly more information provided for  /  separation Work to do: Set alignment (within tracker, tracker to MuID, tracker to vertex) major geometry problems identified and fixed (we think) major misalignment problems identified (z, radial shifts) and looking at applying corrections and seeing how new spectra look software written to extract final alignment constants (3 translations and 3 rotations) working on re-running p-p field-off data to check alignment corrections, etc. refine muon road finding event mixing software put together by Jason to do this work. Nominally working so thinks he can work on tuning road finding now/soon refine muon track finding similar to above: tools put in place to mix Monte Carlo events and “evaluate” and expect to put time into tuning now/soon determine what  /  separation data required and produce it Andy has started looking at single particles run through simulations and expects to have some results soon For p-p, also want event reconstruction with no vertex done properly Modified code already to properly weight (not) the vertex; looking at reconstructing with constraint that dimuons both come from same vertex

2. M. Brooks, 28-Mar-02 Heavy/Light meeting 2 Muon Analysis Work Monte Carlo studies required for physics results road and track finding efficiencies compare like-sign background subtraction to event mixing to determine backgrounds (in dimuon spectra) understand  /  decay muon contributions to single muon spectra Tools required: mixing Monte Carlo with Monte Carlo and mixing Monte Carlo with real events Monte Carlo with Monte Carlo working, Jason already completed bulk of work required for real events. Ming volunteered to oversee modifications needed for MuTr; expect work to be sufficient for MuID Code required: PISA geometry matches real geometry: MuID material changes to be committed by Laurence Probably want some slight modification of tracking chambers to match alignment results detector response matches real data Modified MuTr code to allow Ming to tune charge distributions. Should be able to complete soon. MuID thinks code is o.k. as is Need final road/track finding software in place By definition, will be done at time of second pass on data Real data analyses required: extract MuID efficiencies from real data (well on its way to being done) extract MuTr efficiencies and resolution from real data (tools in place, need to do some analyses with higher statistics, cuts, etc. to determine final answers)

3. M. Brooks, 28-Mar-02 Heavy/Light meeting 3 Muon Analysis Work Event Production Expect to request large set of HIJING events for Monte Carlo-Monte Carlo event mixing. Sean is gathering requests for generating signal events and expect to produce grid of events which will be sufficient for all Monte Carlo studies: single , ,  and J/  events (or possibly mix muons to give J  s  bin in p, theta, z_vertex Signal events will be mixed with real data events as well as Monte Carlo events

4. M. Brooks, 28-Mar-02 Heavy/Light meeting 4 Other Run parameters for production agreed upon Re-reconstruction macro for second pass put together and checked by a number of people Ming is overseeing DST output Jason is overseeing nanoDST output Nicki looking at resurrecting event display work Steve, Vince and company determining “status” of each run (to be used to select “golden” runs for analyses and for determining what run-by-run detector parameters need to be taken into account when doing MC studies) Andrew/Jason have put together QA software to be run during production to check status of data