Tau-ID dec 19th 2002Auguste Besson 1 CTT for taus preliminary studies.

tau-ID dec 19th 2002 Auguste Besson 1

CTT for tausCTT for tausCTT for tausCTT for taus

preliminary studiespreliminary studies


CTT systemCTT systemCTT systemCTT system

• 5 subsystems5 subsystems- CFT/CPSax- CFT/CPSax- STT- STT- CFT stereo- CFT stereo- CPS stereo- CPS stereo- FPS- FPS

• 6 steps6 steps- AFE- AFE- MIX- MIX- DFE. DFEA- DFE. DFEA- COL- COL- BC- BC- TM- TM


List of L1 CTT termsList of L1 CTT termsList of L1 CTT termsList of L1 CTT terms


trigsimtrigsimtrigsimtrigsim• certification files: certification files: /prj_root/843/trigsim_1/cert/prj_root/843/trigsim_1/cert

– p13.03.00 releasep13.03.00 release– p130300_wtaunu.root, p130300_wtaunu.root,

p130300_ztautau.root, p130300_ztautau.root, p130300_qcd.root,p130300_wenu.root.p130300_qcd.root,p130300_wenu.root.

• 7 MC tau types: 7 MC tau types: based on MC decaysbased on MC decays1. = e + 1. = e + 2. = 2. = + + 3. = 3. = + + (type 1)(type 1)

4. = 4. = + + + n + n 0 0 (type 2)(type 2)

5. = 35. = 3 + + (type 3)(type 3)

6. = 36. = 3 + + + n + n 00 (type 3)(type 3)

7. = other hadronic7. = other hadronic

Reco typesReco types1. 1. + + 2. 1 trk2. 1 trk + n + n 00

3. more than 1 trk(3 prongs)3. more than 1 trk(3 prongs)

tau-ID dec 19th 2002

efficienciesefficienciesefficienciesefficiencies• 54 terms54 terms• QCD pT>20GeVQCD pT>20GeV• no acceptance cutno acceptance cut

black Wblack W

red Zred Zblue/dashed QCDblue/dashed QCDgreen/dashed Wgreen/dashed Wee

black Wblack W

red Zred Zblue/dashed QCDblue/dashed QCDgreen/dashed Wgreen/dashed Wee

bbterm numberbbterm number

effi

cie

ncy

effi

cie

ncy


WW : efficiencies by MC tau type : efficiencies by MC tau typeWW : efficiencies by MC tau type : efficiencies by MC tau type

• 7 MC types.7 MC types.

BBterms eff MCtau type 1BBterms eff MCtau type 1BBterms eff MCtau type 1BBterms eff MCtau type 1 BBterms eff MCtau type 2BBterms eff MCtau type 2BBterms eff MCtau type 2BBterms eff MCtau type 2 BBterms eff MCtau type 3BBterms eff MCtau type 3BBterms eff MCtau type 3BBterms eff MCtau type 3BBterms eff MCtau type 4BBterms eff MCtau type 4BBterms eff MCtau type 4BBterms eff MCtau type 4

BBterms eff MCtau type 5BBterms eff MCtau type 5BBterms eff MCtau type 5BBterms eff MCtau type 5 BBterms eff MCtau type 6BBterms eff MCtau type 6BBterms eff MCtau type 6BBterms eff MCtau type 6 BBterms eff MCtau type 7BBterms eff MCtau type 7BBterms eff MCtau type 7BBterms eff MCtau type 7 MCtau decay typeMCtau decay typeMCtau decay typeMCtau decay type

tau-ID dec 19th 2002 7

• terms:terms:3, 4, 35, 36,...3, 4, 35, 36,...

• isolated trackisolated track44 - 47 =TIQ(i)

(If >=1 isolated track in quadrant i, with pT > 5 GeV)

WW efficiency vs. QCD efficiency efficiency vs. QCD efficiencyWW efficiency vs. QCD efficiency efficiency vs. QCD efficiency

QCD efficiencyQCD efficiency

WW efficiency efficiency

term number


eff W-tau nu vs QCDeff W-tau nu vs QCDeff W-tau nu vs QCDeff W-tau nu vs QCDeff eff MC 3 MC 3 : W-tau nu vs : W-tau nu vs

QCDQCDeff eff MC 3 MC 3 : W-tau nu vs : W-tau nu vs

QCDQCD

eff eff MC 4 MC 4 : W-tau nu vs : W-tau nu vs QCDQCD




3, 4, 35, 363, 4, 35, 3644-4744-47

3, 4, 35, 363, 4, 35, 3644-4744-47

4, 35, 364, 35, 3644-4744-47

3, 4, 6, 7, 113, 4, 6, 7, 11


Z Z efficiency vs. QCD efficiency efficiency vs. QCD efficiencyZ Z efficiency vs. QCD efficiency efficiency vs. QCD efficiency

QCD efficiencyQCD efficiency

Z Z efficiency efficiency

term number


questions from a non questions from a non expertexpert

questions from a non questions from a non expertexpert

• trigger terms :trigger terms :– tried to understand which terms could be tried to understand which terms could be

interestinginteresting

• some terms should be ‘’added‘’some terms should be ‘’added‘’– isolated track in quadrantisolated track in quadrant

• How combine calorimeter and CFT How combine calorimeter and CFT trigger ? Which level ?trigger ? Which level ?

• L3tau information ? algorithms ?L3tau information ? algorithms ?• Global approach or specific MC tau type ?Global approach or specific MC tau type ?• inputs/comments welcome and needed.inputs/comments welcome and needed.

Tau-ID dec 19th 2002Auguste Besson 1 CTT for taus preliminary studies.

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