First loot at H→ττ→ľX M. Konecki, A. Nikitenko

First loot at H→ττ→ľX M. Konecki, A. Nikitenko

–1–
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First loot at H→τ τ →µX
will be: L1,L2,L3 strategy for H→τ τ →µX :)
(today only some base muon L1 distributions)
M. Konecki, A. Nikitenko
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M. Konecki
PRS/Mu meeting, 17 July 2001
–2–
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H→τ τ channel
g
b
H
g
b
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M. Konecki
PRS/Mu meeting, 17 July 2001
–3–
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Event generation
PYTHIA 6.158 (newer than /cern/new/..)
H→τ τ process generation from S.N.
deacy to final state by M.K.
testing sample: 1000 ev. generated, up to 10000 ev. needed
processed with cms122, reprocessed with cms121
(still problems in orca, hit formatting )
finally 602 events digitised and analysed
no pileup at the moment !
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M. Konecki
PRS/Mu meeting, 17 July 2001
–4–
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muonic spectra
hEtaGenT
hEtaGenT
Nent = 530
Mean = 0.1134
RMS = 1.177
24
22
20
hPtGen
hPtGen
Nent = 549
Mean = 30.4
RMS = 22.38
18
16
18
14
16
14
12
12
10
10
8
8
6
6
4
4
2
2
0
-3
-2
-1
0
1
2
hEtaL1
3
hEtaL1
Nent = 497
Mean = 0.1139
RMS = 1.217
40
0
0
20
40
60
80
100
120
hPtL1
140
hPtL1
Nent = 497
Mean = 43.3
RMS = 34
45
40
35
35
30
30
25
25
20
20
15
15
10
10
5
0
-3
5
-2
-1
0
1
2
3
0
0
20
40
60
80
100
120
140
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M. Konecki
PRS/Mu meeting, 17 July 2001
–5–
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N. Amapane, S. Arcelli, M. Fierro, A. Jeitler, M. Konecki, H. Sakulin
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L1 – combined rates
CMS IN 2000/61 ≈ Trigger TDR
trigger
type
threshold
(GeV)
µ ⊕ e/γ 5,22
µ⊕τ
5,70
µ⊕ jet 5,80
µ ⊕ Et 5, 400
µ⊕ missEt 5,60
pure µ 25; 8,5
incl. rate
(kHz)
1.7
0.42
0.80
0.60
0.60
10.4
12.9
CATANIA
threshold
(GeV)
5,20
5,105
5,120
5,400
5, 60
25; 8,5
incl. rate
(kHz)
1.6
1.10
0.96
0.26
0.45
10.0
12.5
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M. Konecki
PRS/Mu meeting, 17 July 2001
–6–
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L1 acceptance (events)
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generated: 602
seen: 549
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L1 trigger”:
1mu
@ 25
2mu
@ (8,5)
mu,ele @ (5,22.)
mu,tau @ (5,105.)
mu,jet @ (5,120.)
mu,Et @ (5,400.)
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no L1 trigger: 173
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M. Konecki
320
96
85
72
44
0
to be optimised!
mu,tau @ (5,80.) 134
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PRS/Mu meeting, 17 July 2001
–7–
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Next...
This study...
L1/L2+isolation/L3
General
• about 5000–10000 events for signal study
• needs cmsim/orca acceptance up to |η| = 5. (corrections in std muon prod.)
• cut in processing down to 50 MeV (Pixel) (corrections in std muon prod.)
• L3! (secondary vertex corrections in std muon prod.)
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M. Konecki
PRS/Mu meeting, 17 July 2001