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Alpgen Production 2008

  • Alpgen ttbar + N partons, N = 0,1,2,3,4
  • ptjmin = 30, 40, 50 GeV
  • Library: 2Qwork
  • Production of grid2 files.
  • Maria's rule of thumb: 5+N iterations, where N is the number of light (udsg) partons.
  • ~ 43000 events per minute.

Template file:

1          ! generation mode
ttbar4j_40 ! string labeling the output files
0          ! start with: 0=new grid, 1=previous warmup grid, 2=previous generation grid
4000000  5 ! N(events)/iteration and N(iter's) for initial grid optimiz
50000000   ! number evts to generate
*** The above 5 lines provide mandatory inputs for all processes
*** (Comment lines are introduced by the three asteriscs)
*** The lines below modify existing defaults for the hard process under study
*** For a complete list of accessible parameters and their values,
*** input 'print 1' (to display on the screen) or 'print 2' to write to file
njets 4
ebeam 5000
ih2 1
ickkw 1
ptjmin 40
etajmax 5
drjmin 0.7
mt 175
ihvy 6
itdecmode 7

  • Tried only 5 iterations for ttbar + 4 jets, trying now with 9 iterations and seeing if it makes a difference.

-- ThiagoTomei - 15 Dec 2008

  • Using the SPRACE cluster to generate 0,1,2,3 jets.
  • 4 jets still running in access.
  • sprace_ALPGEN_submit.py.txt: Script to submit Alpgen generation jobs.

-- ThiagoTomei - 16 Dec 2008

Sample Asked events Wgt events Unw events Unw efficiency Matched Mat. eff.
ttbar0j_30GeV 50000000 6462816. 1136665      
ttbar0j_40GeV 50000000 6462816. 1136665      
ttbar0j_50GeV 50000000 6462816. 1136665      
ttbar1j_30GeV 50000000 2120429. 424774      
ttbar1j_40GeV 50000000 2350711. 453316      
ttbar1j_50GeV 50000000 2585228. 506646      
ttbar2j_30GeV 50000000 190817. 35558      
ttbar2j_40GeV 50000000 237619. 46028      
ttbar2j_50GeV 50000000 298591. 59939      
ttbar3j_30GeV 50000000 262729. 39244      
ttbar3j_40GeV 50000000 376197. 48051      
ttbar3j_50GeV 50000000 339983. 56262      
ttbar4j_30GeV 50000000 208188. 20263      
ttbar4j_40GeV 50000000 155193. 25736      
ttbar4j_50GeV 50000000 180885. 30121      

-- ThiagoTomei - 17 Dec 2008

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Topic revision: r7 - 2008-12-17 - ThiagoTomei
 

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