1. B+J/K+ status
July 18, 2008
Wang zheng

2. Tag & Probe 5
July 18, 2008
Wang zheng

3. Mu+Mu
Efficiency
Fit inc. mass distribution m(mu+trk) and m(mu+mu) with a gaussian each Pt bin.
Mu+trk
Pt: 4-6 GeV/c
July 18, 2008
Wang zheng

4. 13 Mu pt bins, pt bin 22-24 GeV/c Mu+trk Mu+mu July 18, 2008
Wang zheng

5. Need to understand the different!
July 18, 2008
Wang zheng

6. The full effiicency
July 18, 2008
Wang zheng

7. The filter efficiency 500,0000 events are generated.
分析显示为32469个事例。里面有B＋18005个（加上MU子过滤后，剩下7599个）， B－18206个（加上MU子过滤后，剩下1467个， 1467/ = , 同网上的0。00032差不多）。
BIN 3－9， 9－ － －18 18－24 24－35 35 B－
（MU子过滤后） B＋
（MU子过滤后）
July 18, 2008
Wang zheng

8. The filter efficiency for new bin
July 18, 2008
Wang zheng

9. Thanks !
July 18, 2008
Wang zheng

10. *** PYSTAT: Statistics on Number of Events and Cross-sections ****
=======================================================
I Subprocess I Number of points I Sigma I
I I I (mb) I
I N:o Type I Generated Tried I =========================================================
I 0 All included subprocesseI I E+01 I
I 11 f + f' -> f + f' (QCD) I I E+01 I
I 12 f + fbar -> f' + fbar' I I E-03 I
I 13 f + fbar -> g + g I I E-03 I
I 28 f + g -> f + g I I E+01 I
I 53 g + g -> f + fbar I I E-01 I
I 68 g + g -> g + g I I E+01 I
I 95 Low-pT scattering I I E+00 I
=========================================================
July 18, 2008
Wang zheng

11. * PYMAXI: summary of differential cross-section maximum search ***
==========================================================
I ISUB Subprocess name I Maximum value I
========================================================
I Low-pT scattering I E+01 I
| Semihard QCD 2 -> I E+04 I
=========================================================
July 18, 2008
Wang zheng

12. The binning method Start the binning from the X-section peak.
Try to make int. X-section in each bins to be same.
New bins: 9-11GeV, 11-14GeV, 14-18GeV, 18-24GeV, 24-35GeV, >35GeV.
July 18, 2008
Wang zheng

13. The filter efficiency (generation)
source = PythiaSource { untracked int32 pythiaPylistVerbosity = 0
untracked bool pythiaHepMCVerbosity = false
untracked int32 maxEventsToPrint = 0
PSet PythiaParameters = {
vstring parameterSets = {
"pythiaUESettings",
"processParameters" }
include "Configuration/Generator/data/PythiaUESettings.cfi"
vstring processParameters = {
'MSEL=1 ! Min Bias',
# J/psi decays
'MDME(858,1)=0 ! J/psi->e+e-',
'MDME(859,1)=1 ! J/psi->mumu',
'MDME(860,1)=0',
# B- decays
'MDME(908,1)=2', 'MDME(909,1)=2', 'MDME(910,1)=2', 'MDME(911,1)=2', 'MDME(912,1)=2', 'MDME(913,1)=2',
'MDME(914,1)=2', 'MDME(915,1)=2', 'MDME(916,1)=2', 'MDME(917,1)=2', 'MDME(918,1)=2', 'MDME(919,1)=2','MDME(920,1)=2', 'MDME(921,1)=2', 'MDME(922,1)=2', 'MDME(923,1)=2', 'MDME(924,1)=2',
'MDME(925,1)=2', 'MDME(926,1)=2', 'MDME(927,1)=2', 'MDME(928,1)=2', 'MDME(929,1)=2', 'MDME(930,1)=2',
'MDME(931,1)=2', 'MDME(932,1)=2', 'MDME(933,1)=2', 'MDME(934,1)=3 ! J/psi K-',
'MDME(935,1)=2', 'MDME(936,1)=2','MDME(937,1)=2', 'MDME(938,1)=2', 'MDME(939,1)=2', 'MDME(940,1)=2',
'MDME(941,1)=2', 'MDME(942,1)=2', 'MDME(943,1)=2' }}}
# -- Require one Bs
module BpFilter = PythiaFilter { untracked int32 ParticleID = 521 }
-----
path p1 = {BpFilter, psim}
schedule = { p1, outpath } }
July 18, 2008
Wang zheng