q Z0 q W W H q p p q Z0 Fig.2

Transcription

1 Fig.1

2 q Z 0 p q W Z 0 H W q q p Fig.2

3 Fig.3

4 Fig.4

5 Fig.5

6 Training Quenches at 1.8K - first runs Training Quench No Quench Provoked Quench Magnetic Field at Quench B [Tesla] HCMBB-A HCMBB-A HCMBB-A HCMBB-A Quench Number Ultimate Field = 9T Nominal Field = 8.34 Tesla Fig.6

7 Fig.7

8 solenoid ATLAS CMS Fig.8

9 Fig.9

10 Fig.10

11 1.2m 3.5m Fig.11

12 1 of the 128 channels programmable gain Analogue unity gain inverter 192-cell analogue pipeline S/H 128:1 MUX Differential current O/P SF SF 50 ns CR- RC shaper APSP APV DCU 256:1 Optical transmitter Detector CLK CCU Tx/Rx T1 I2C Control module PLL Front End Module APV MUX ADC analogue optical link FPGA Tx/Rx digital optical link TTCrx µp TTCrx FPGA RAM Front End Driver Fig.12 Front End Controller

13 MDT RPC MDT CSC TGC Fig.13

14 Fig.14

15 Fig.15

16 Fig.16

17 CMS: Transverse energy flow in ηx φ ~ 0.1x0.1 at L=10 34 cm -2 s -1 η=0.1 η=2.2 Fig.17

18 area used to measure energy Rejection power against π 0 s in jets Loss of efficiency at Hi L for H γγ R o γ area used for isolation R= sqrt( φ 2 + η 2 ) Fig.18

19 CMS ATLAS Fig.19

20 Muons ATLAS Pattern Recognition >9 precision hits + 2 pixel hits + σ d < 1mm Pions Fig.20

21 Fig.21

22 E Te =35 GeV CMS Barrel Fig.22a Fig.22b

23 Conversions CMS Barrel Higgs γγ ε γ ~ 90% Unconverted γs ¼ of conversions cannot be reconstructed Converted γs 5x5 5x9 and dynamic Fig.23

24 ATLAS Classical cone algorithm - jet built around a seed parameters: E T seed cut, cone opening radius R ATLAS: W jet-jet mass resolution p TW (GeV) R σ LoL σ HiL (GeV) p T < <p T < <p T < W + jets E T jet > 20 GeV 100<p TW < <p TW <700 with pileup R=0.4 pileup+el noise * el noise o Fig.24

25 A ττ m A =150 gev Fig.25

26 Cuts (ATLAS) E Tγ1,E Tγ2 > 40, 25 GeV with η < 2.5 E H1 /E em E em2 3x3 / E em2 7x7 Shower width in η Track Veto ATLAS EM calorimeter 4 mm η-strips in first compartment 3 longitudinal segments ε γ ~ 80% all L Detailed MC (γ jet + jet-jet) < 40% γγ Fig.26a Fig.26b

27 Likelihood method Form significance S i for i-th trk in jet Form r i =f b (S i )/f u (S i ) Form Jet weight W = Slog r i Fig.27a Fig.27b

28 ATLAS τ-jets QCD jets High p T Medium Low Fig.28b Fig.28c Fig.28a

29 E T miss τ 2 h (+π 0 s)+ νs τ 1 l + νs Jets system Mass resolution ~ 10% Fig.29a Fig.29b

30 Fig.30 Tagging Jets

31 Hadron Electromagnetic E T E-H Tower Trigger Tower = 5x5 EM towers 72 φ x 54 η x 2 = 7776 towers φ η Hit φ η η E T ( ) + max E T ( ) > E T min E T ( ) / E T ( ) < HoE max At least 1 E T (,,, ) < E iso max Isolated e/γ Fine-grain: 1( ) > R E T min Fig.31

32 Fig.32 P t = 3.5, 4.0, 4.5, 6.0 GeV

33 Fig.33

34 Fig.34

35 - 30 Collisions/25ns ( 10 9 event/sec ) 10 7 channels (10 16 bit/sec) 25 ns Luminosity = cm -2 sec -1 Multilevel trigger and readout systems Trigger Rate 40 MHz 10 5 Hz ATLAS 10 3 Hz µsec Lvl-1 Lvl-2 ms 25ns Detectors Front end pipelines Readout buffers Switching network Trigger Rate 40 MHz 10 5 Hz CMS µsec Lvl-1 25ns Detectors Front end pipelines Readout buffers Switching network Lvl-3 Processor farms HLT Processor farms 10 2 Hz sec 10 2 Hz sec Fig.35

36 40 MHz COLLISION RATE 100 khz LEVEL-1 TRIGGER 1 Terabit/s (50000 DATA CHANNELS) Detectors Charge Time Pattern Energy Tracks 16 Million channels 3 Gigacell buffers 1 Megabyte EVENT DATA 200 Gigabyte BUFFERS 500 Readout memories 500 Gigabit/s Gigabit/s SERVICE LAN Networks Computing services EVENT BUILDER. A large switching network ( ports) with a total throughput of approximately 500 Gbit/s forms the interconnection between the sources (Readout Dual Port Memory) and the destinations (switch to Farm Interface). The Event Manager collects the status and request of event filters and distributes event building commands (read/clear) to RDPMs 5 TeraIPS EVENT FILTER. It consists of a set of high performance commercial processors organized into many farms convenient for on-line and off-line applications. The farm architecture is such that a single CPU processes one event Petabyte ARCHIVE Fig.36

37 Fig.37

38 ON-line LEVEL-1 Trigger Hardwired processors (ASIC, FPGA) Pipelined massive parallel OFF-line HIGH LEVEL Triggers Farms of processors Reconstruction&ANALYSIS TIER0/1/2 Centers 25ns 3µs ms sec hour year Giga Tera Petabit Fig.38

39 pulse shape pulse shape In+Out-of-time pulses t (25ns units) Fig.39a t (25ns units) Fig.39b

40 Muon Momentum Resolution Spatial resolution Š 100 µm/station m PbWO 4 CRYSTAL ELECTROMAGNETIC CALORIMETER Energy reconstructed in 3 x 3 crystals δp t /p t - 10% at p t =500 GeV at η=2 ) Fig.40a σ / E - 2.7% / E 0.5% 20%/E (E in GeV) Fig.40b

41 g t H o t g t g g fusion t g g t t H o t t fusion t q W,Z W,Z q H o W, Z bremsstrahlung q W,Z H o q W,Z WW, ZZ fusion q σ (pb) gg H qq Hqq qq' HW M. Spira et al. gg,qq Hbb NLO QCD gg,qq Htt qq HZ M H (GeV) σ(pp H+X) s = 14 TeV m t = 175 GeV CTEQ4M events for 10 pb Fig.41

42 Fig.42

43 Detailed MC Fig.43a Fig.43b

44 CMS CMS Fig.44a Fig.44b

45 γγ + l + X γγ + 2 jets p T > 40 GeV Fig.45

46 Fig.46 ATLAS

47 ATLAS 100 fb -1 30(70) fb -1 at lo(hi)l m H = 120 GeV Fig.47

48 Fig.48

49 Fig.49 ATLAS 30 fb -1 m H =150 GeV

50 H 4 µ Zbb tt Normalised impact parameter Fig.50

51 Fig.51

52 Fig.52

53 20 fb fb -1 Fig.53

54 ATLAS : 100 fb -1 Fig.54

55 Fig.55 CMS

56 E tag >200 GeV ATLAS m H = 1TeV, 30fb -1 m H = 800 GeV, 30 fb -1 E tag >400 GeV Fig.56

57 Fig.57

58 5σ LEP2 Fig.58

59 Fig.59

60 Higgs production via WW fusion Zeppenfeld et. al. 100 fb -1 30fb -1 Fig.60

61 Error on σx BR (%) H γγ tth (H bb) H WW lνlν H ZZ ( * ) 41 Fig Open symbols : + / + = 10% Closed symbols : + / + = 5% 10 2 M H (GeV/c 2 ) 10 3

62 Mass spectra for M SUSY >1TeV M HIGGS (GeV/c2 ) No stop mixing M SUSY = 1 TeV Two-loop / RGE-improved radiative corrections included Maximal stop mixing M SUSY = 1 GeV H, tan β= 2 H, tan β= 20 H, tan β= 20 H ±, tan β= 20 H, tan β= 2 H ±, tan β= 20 H ±, tan β= 2 H ±, tan β= 2 h, tan β= 20 h, tan β= 20 h, tan β= 2 h, tan β= M A (GeV/c 2 ) M A (GeV/c 2 ) Fig.62

63 σ (pb) g g gg h hbb hw hqq hz htt ~ ~ t,t,b,b h H h,h Hqq gg H HZ σ (pp h / H+X) [pb] s = 14 TeV M t = 175 GeV CTEQ4 tgβ= 1.5 Hbb HW W,z M. Spira et al. Htt σ (pb) q q M h/h (GeV/c 2 ) W,Z h,h hbb hw g g gg h hz b b hqq b b Hqq h,h g g gg H htt 10 HW 3 h H HZ Htt M h/h (GeV/c 2 ) b Hbb h,h σ (pp h / H+X) [pb] s = 14 TeV M t = 175 GeV CTEQ4 tgβ = 30 b Fig.63

64 No mixing, M S =1TeV Fig.64

65 Fig.65

66 ATLAS σ m ~12% CMS σ m ~14% m H =500 GeV tanβ=25 Fig.66a Fig.66b

67 CMS 30 fb -1 Fig.67a Fig.67b

68 1 b-tag Fig.68a Fig.68b

69 Fig.69

70 Fig.70

71 Fig.71

72 a b Fig.72

73 a b Fig.73 c

74 Fig.74

75 Adding bb on the τ modes can close the plane Wh (e/µ)ν bb Area covered by H 0 χ 02χ 02, 4leptons 100 fb -1 No stop mixing maximal stop mixing with 30 fb -1 maximal stop mixing with 300 fb -1 Fig.75

76 Fig.76

77 Minimal mixing (m h < GeV) NB: log scale Caveat: coverage depends strongly on exact upper bound on m h Fig.77

78 Maximal mixing (m h < 130 GeV) NB: linear scale Caveat: possible suppression of e.g. bbh coupling could affect significantly H observation at LHC Fig.78

79 MSSM Higgs bosons h,a,h h,a,h,h ± h,h ± 4 Higgs observable 3 Higgs observable 2 Higgs observable 1 Higgs observable 5σ contours H,H ± h h,h Assuming decays to SM particles only h,,h,h ± h,a,h,h ± h,h ± In this region only h observable (h SM Higgs) disentangle SM /MSSM? Fig.79

80 Discovery Luminosity [fb 1 ] σ Higgs Signals (statistical errors only) CMS LHC 14 TeV (SM NLO Cross Sections) M Higgs [GeV] H γγ H ZZ H WW lept. acceptance, lept. isol. lept. isol., jet veto, E t miss D_D_1285c ~ 1 34 ~ 1 33 ~ 1 33 m 1/2 (GeV) ~ one ~~ miss CMS q, g mass reach in E + jets inclusive channel T for various integrated luminosities CMS TH q(500) ~ h(110) EX Ωh 2 = 0.15 Ωh 2 = 0.4 g(500) ~ 500 Ωh 2 = 1 q(1000) ~ g(3000) ~ miss E T (100 fb -1 ) q(2000) ~ q(1500) ~ g(1500) ~ L dt = 1, 10, 100, 300 fb -1 A 0 = 0, tanβ= 35, µ > 0 miss E T (300 fb -1 ) g(2000) ~ miss E T (10 fb -1 ) miss E T (1 fb -1 ) g(1000) ~ h(123) g(2500) ~ q(2500) ~ Fermilab reach: < 500 GeV m 0 (GeV) ~ one ~ one ~ one cosmologically plausible region DD_2101 Fig.80