common cuts September 2009

The following selection, cuts will be applied to W, Z-analysis and not varied unless explicitly stated

1. Run selection: use SL09b muDst after BHT3 'notch' problem was fixed, beginGMT= 2009-03-28 12:34:27, comprising ~80% of recorded data
   • F10448 - F10536
   • R10087001 - R10103046
     • skip runs w/ badly functioning TPC (~no vertices found) : R10084013, R10088103, R10081024, R10095032, R10085022, R10088060, R10085103, R10087007, R10093049, R10085118
2. run analysis on muDst's
   1. access TRG,TPC,BTOW,BSMD directly directly from muDst containers
   2. apply calibrations from DB 'by hand' in analysis code
3. Trigger bits requirement

   1. BHT3 trig ID: 23054[01] or small IDs

   2. L2W trig ID: 23060[01] or small IDs

   3. L2-bit1: ET>13 GeV
4. Reco prim vertex requirements
   1. rank>=0
   2. | z-vertex | <80 cm
5. Reco TPC track requirements
   1. prim tracks belong to selected prim vertex
   2. flag=301 for primary or =101 for global component
   3. nFit/nPoss>0.51
      1. for electron candidate require additional
         1. nFitPoints>20 ??
         2. if track PT>10 GeV/c assume it is 10 GeV/c
         3. drop track if last point belongs to one of the 'worse' 3 sectors:

            • West TPC sector 11, phi =~[1.9,2.3] rad

            • West TPC sector 4, phi =~[-0.7, -0.3] rad

            • East TPC sector 21, phi =~[-0.7, -0.3] rad

6. BTOW: use ideal gains, actual status tables & pedestals
   1. assume tower is dead if status!=1
   2. assume tower ADC=0 if (rawADC-ped)< 3* sigPed
7. BSMD use Willi's 2009 calibration
   1. use relative gains, DB flavor=Wbose
   2. use status bits from DB , flavor=ofl
   3. use pedestal residua from DB , flavor=ofl

   4. assume strip is dead if status not in range [1,......???] ???

   5. assume strip ADC=0 if (ZS ADC-pedRes)< 3* sigPed
   6. use custom absolute calibration ( ADC--> energy)