Post on 24-Feb-2021
Fig.1
HWW
Z0
p p
Z0
Fig.2
Fig.3
Fig.4
Fig.5
Training Quenches at 1.8K - first runs
6.006.256.506.757.007.257.507.758.008.258.508.759.009.259.509.75
10.00
Quench Number
Mag
netic
Fie
ld a
t Que
nch
B [T
esla
]
Ultimate Field = 9T Nominal Field = 8.34 Tesla
No Quench
Training Quench
Provoked Quench
HCMBB-A000102000001
HCMBB-A000101000002
HCMBB-A000101000001
HCMBB-A000103000001
Fig.6
Fig.7
solenoid
ATLAS
CMS
Fig.8
Fig.9
Fig.10
1.2m
3.5m
Fig.11
digitaloptical link
Optical transmitter
ADC
RAMTTCrx
TTCrx µPFront End Driver
T1
Front End Controller
I2C
Front End ModuleDetector
Control module
PLL
CLK
CCU
analogueoptical link
DCU
Tx/Rx
Tx/Rx
APV
APVMUX
256:1
FPGA
FPGA
programmable gain
50 ns CR-RC shaper
192-cell analoguepipeline
1 of the 128 channels
SFSF
Analogue unity gain inverter
S/H
APSP
128:1 MUX
Differential current O/P
APV25 functional schematic
Fig.12
MDTMDT
TGC
RPC
CSC
Fig.13
Fig.14
Fig.15
Fig.16
CMS: Transverse energy flow in ∆ηx∆φ ~ 0.1x0.1 at L=1034 cm -2s-1
η=0.1 η=2.2
Fig.17
Loss of efficiency at Hi L for H γγ
Rejection power against π0s in jets
o
area used to measure energy
area used for isolation
γ
∆R
∆R= sqrt(∆φ2 + ∆η2)
Fig.18
CMSATLAS
Fig.19
Muons
Pions
ATLASPattern
Recognition>9 precision hits
+ 2 pixel hits+ σd < 1mm
Fig.20
Fig.21
ETe=35 GeV CMS Barrel
Fig.22aFig.22b
Conversions CMS BarrelHiggs γγεγ ~ 90%
¼ of conversions cannot be reconstructed
Unconverted γs Converted γs
5x5 5x9 anddynamic
Fig.23
Classical ‘cone’ algorithm - jet built around a seed• parameters: ET
seed cut, cone opening radius ∆RATLAS
∆R=0.4pileup+el noise *
el noise o
W + jetsET
jet > 20 GeV
ATLAS: W jet-jet mass resolution
pTW(GeV) ∆R σLoL σHiL (GeV)
pT<50 0.4 9.5 13.8 100<pT<200 0.4 7.7 12.9200<pT<700 0.3 5.0 6.9
100<pTW<200 200<pT
W<700
with pileup
Fig.24
A ττ mA=150 geV
Fig.25
Cuts (ATLAS)ETγ1,ETγ2 > 40, 25 GeV with |η| < 2.5EH1/Eem
Eem23x3/ Eem2
7x7
Shower width in ηTrack Veto
ATLAS EM calorimeter4 mm η-strips in first compartment
3 longitudinal segments
Detailed MC
εγ ~ 80% all L
(γ−jet + jet-jet) < 40% γγFig.26bFig.26a
Likelihood methodForm significance Si for i-th trk in jetForm ri=fb(Si)/fu(Si)Form Jet weight W = Slog ri
Fig.27bFig.27a
ATLAS
High pT
Medium
Low
τ-jets QCD jets
Fig.28b Fig.28c
Fig.28a
ETmiss
τ1 l + νs
τ2 h (+π0s)+ νs
Jets system
Mass resolution ~ 10%
Fig.29bFig.29a
Tagging Jets
Fig.30
ET( ) + max ET( ) > ETmin
φη
ET
Electromagnetic Hadron
Hit
72 φ x 54 η x 2 = 7776 towers
0.087 φ
0.0145 η
0.0145 η
E-H Tower
Trigger Tower = 5x5 EM towers
ET( ) / ET( ) < HoEmax Isolated
“e/γ”At least 1 ET( , , , ) < Eisomax
Fine-grain: ≥1( ) > R ETmin
Fig.31
Pt = 3.5, 4.0, 4.5, 6.0 GeV
Fig.32
Fig.33
Fig.34
- 30 Collisions/25ns ( 10 9 event/sec ) 107 channels (10 16 bit/sec)
Multilevel trigger and readout systems
Luminosity = 1034 cm-2 sec-1 25 ns
25ns40 MHz
105 Hz
103 Hz
102 Hz
Trigger Rate
Lvl-1
Lvl-2
Lvl-3
Front end pipelines
Readout buffers
Processor farms
Switching network
Detectors
µsec
ms
sec
25ns40 MHz
105 Hz
102 Hz
Trigger Rate
Lvl-1
HLT
Front end pipelines
Readout buffers
Processor farms
Switching network
Detectors
µsec
sec
ATLASCMS
Fig.35
16 Million channels
100 kHzLEVEL-1 TRIGGER
1 Megabyte EVENT DATA
200 Gigabyte BUFFERS500 Readout memories
3 Gigacell buffers
500 Gigabit/s
Gigabit/s SERVICE LAN Petabyte ARCHIVE
Energy Tracks
Networks
1 Terabit/s(50000 DATA CHANNELS)
5 TeraIPS
EVENT BUILDER.A large switchingnetwork (512+512 ports) with a total throughput ofapproximately 500 Gbit/s forms the interconnectionbetween the sources (Readout Dual Port Memory)and the destinations (switch to Farm Interface). TheEvent Manager collects the status and request ofevent filters and distributes event building commands(read/clear) to RDPMs
EVENT FILTER. It consists of a set of highperformance commercial processors organized into manyfarms convenient for on-line and off-line applications.The farm architecture is such that a single CPUprocesses one event
40 MHzCOLLISION RATE
Charge Time Pattern
Detectors
Computing services
Fig.36
Fig.37
LEVEL-1 Trigger Hardwired processors (ASIC, FPGA) Pipelined massive parallel
HIGH LEVEL Triggers Farms of
processors
10-9 10-6 10-3 10-0 103
25ns 3µs hour yearms
Reconstruction&ANALYSIS TIER0/1/2
Centers
ON-line OFF-line
sec
Giga Tera Petabit
Fig.38
Fig.39a
-5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
t (25ns units)
puls
e sh
ape
-5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
t (25ns units)
puls
e sh
ape
In+Out-of-time pulses
Fig.39b
Fig.40a
Muon Momentum Resolution
Spatial resolution Š 100 µm/station
δpt/pt - 10% at pt=500 GeV at η=2 )
PbWO4 CRYSTAL ELECTROMAGNETIC
CALORIMETEREnergy reconstructed in 3 x 3 crystals
σ / E - 2.7% / ¦ E ⊕ 0.5% ⊕ 20%/E (E in GeV)
Fig.40b
m
gg H
qq Hqq
gg,qq Hbb
gg,qq Htt
qq HZ
qq' HW
107
106
105
104
103
102
10-1
10-2
10-3
10-4
10
1
0 200 400 600 800 1000
MH (GeV)
σ (
pb)
σ(pp H+X)
s = 14 TeV
mt = 175 GeV
CTEQ4M
NLO QCD
M. Spira et al.
5–
1
102g
g g fusion
g tHot
t
g
g
Ho
t
t
t
t
t t fusion
q
q
WW, ZZ fusion q
Ho
W,Z
W,Z
q
q Ho
W, Z bremsstrahlungq
W,Z W,Z
eve
nts
fo
r 1
0 p
b
Fig.41
Fig.42
Fig.43a
Detailed MC
Fig.43b
CMS CMS
Fig.44a Fig.44b
γγ + l + X
γγ + ≥ 2 jets pT > 40 GeV
Fig.45
ATLAS
Fig.46
ATLAS100 fb-1
30(70) fb-1 at lo(hi)L
mH = 120 GeV
Fig.47
Fig.48
ATLAS 30 fb-1
mH =150 GeV
Fig.49
Normalised impact parameter
H → 4 µ
bZbtt
4 8 12
Fig.50
Fig.51
Fig.52
20 fb-1 100 fb-1
Fig.53
ATLAS : 100 fb-1
Fig.54
CMS
Fig.55
mH = 800 GeV, 30 fb-1
Etag>200 GeV
Etag>400 GeV
ATLASmH = 1TeV, 30fb-1
Fig.56
Fig.57
LEP2
5σ
Fig.58
Fig.59
Higgs production via WW fusion
Zeppenfeld et. al. 100 fb-1
30fb-1
Fig.60
102
10
20
30
103MH (GeV/c2)
H → γγttH (H → bb)
H → ZZ(*) → 41
H → WW → lνlν
Err
or
on
σx
BR
(%
)
Open symbols : ∆+ / + = 10%Closed symbols : ∆+ / + = 5%
Fig.61
Mass spectra for MSUSY>1TeV
Two-loop / RGE-improved radiative corrections included
No stop mixing
MSUSY= 1 TeV
H, tan β= 2
H, tan β= 20
h, tan β= 2
h, tan β= 20
H±, tan β= 2
H±, tan β= 20
300
250
200
150
100
50
0 25 50 75 100 125 150 175 200 225 250
MA (GeV/c2)
MH
IGG
S (
Ge
V/c
2)
MA (GeV/c2)
Maximal stop mixing
MSUSY= 1 GeV H, tan β= 2
H, tan β= 20
h, tan β= 2
h, tan β= 20H±, tan β= 2
H±, tan β= 20
300
250
200
150
100
50
0 25 50 75 100 125 150 175 200 225 250
Fig.62
σ (
pb
)
gg hgg H
hW
HW
hZ
HZ
hqq
Hqqhbbhtt
Htt
Hbb
H
σ (pp h / H+X) [pb]s = 14 TeV
Mt = 175 GeVCTEQ4
tgβ= 1.5
M. Spira et al.
50 100 200 500 103
σ (
pb
)
Mh/H (GeV/c2)
h
g
g t,t,b,b
h,H
~ ~
h,HW,Z
W,z
q
q
b
g
g
h,H
gg h
gg H
hZ
HZ
hW
HW
hqq
Hqq
Htt
htt
hbb
Hbb
h H
σ (pp h / H+X) [pb]s = 14 TeV
Mt = 175 GeVCTEQ4
tgβ = 30
10–2
10–3
10–4
10–1
104
103
102
10
1
50 100 200 500 103
g b
bb
bg
h,H
b
Mh/H (GeV/c2)
10–2
10–3
10–4
10–1
104
103
102
10
1
Fig.63
No mixing, MS=1TeV
Fig.64
Fig.65
ATLASσm~12%
CMSσm~14%
mH=500 GeVtanβ=25
Fig.66aFig.66b
CMS 30 fb-1
Fig.67a
Fig.67b
Fig.68a
1 b-tag
Fig.68b
Fig.69
Fig.70
Fig.71
a
b
Fig.72
a
b cFig.73
Fig.74
Adding bb on the τ modes can “close” the plane
Wh
bb
maximal stopmixing with
30 fb-1 maximal stop mixingwith 300 fb-1
Area coveredby H0→ χ 02χ0
2,→4ℓeptons
100 fb-1
No stop mixing
(e/µ)ν
Fig.75
Fig.76
Minimal mixing(mh < 115.5 GeV)NB: log scale
Caveat: coverage depends strongly on exact upper bound on mh
Fig.77
Maximal mixing(mh < 130 GeV)NB: linear scale
Caveat: possible suppression of e.g. bbH coupling could affect significantlyH observation at LHC
Fig.78
In this region only h observable(h ≈ SM Higgs)→ disentangle SM /MSSM ?
4 Higgs observable3 Higgs observable2 Higgs observable1 Higgs observable
MSSM Higgs bosons
h,A,H,H±
h,A,H,H±
Assuming decaysto SM particles only
h,H±
h
h,H±
h,A,H
H,H±
h,,H,H±
h,H
5σ contours
Fig.79
102
10
1
10—1
100 200 300 400 500 600
MHiggs [GeV]
H → γγH → ZZ
H → WW
LHC 14 TeV (SM NLO Cross Sections)
Dis
cove
ry L
um
ino
sity
[fb
—1
]
D_
D_
12
85
c
5σ Higgs Signals (statistical errors only)
~ 1 month@1033
~ 1 year@1033
~ 1 year@1034
CMS
lept. isol. , jet veto, Etmiss
lept. acceptance, lept. isol.
”L dt = 1, 10, 100, 300 fb-1
A0= 0, tanβ= 35, µ > 0
ET (300 fb-1)miss
ET (100 fb-1)miss
ET (10 fb-1)miss
ET (1 fb-1)miss
g(1000)~
q(1500)
~
g(1500)~
g(2000)~
q(2500)
~
g(2500)~
q(2000)
~
g(3000)~
q(1000)~
q(500)
~g(500)~
Ωh
2 = 0.4
Ωh
2 = 1
Ωh 2 = 0.15
h(110)
h(123)
1400
1200
1000
800
600
400
200
50000
1000 1500 2000
m0 (GeV)
m1/
2(G
eV)
CMS q, g mass reach in E + jets inclusive channel for various integrated luminosities
~ ~ miss
T
EX
TH
DD
_210
1
CMS
~ one year@1033
~ one year@1034
~ one month@1033
Fermilab reach: < 500 GeV
~ one week@1033
cosmologically plausible region
Fig.80