1 Hgg Cut based Analysis update Jim Branson, Chris Palmer, Marco Pieri, Matteo Sani, Sean Simon

2 Introduction Trying to address the guidelines for Higgs Review from Higgs conveners Oct 12 th Description of analysis Sequential cuts plots and yields N-1 plots and final plots for all variables Categories Measurement of efficiency and photon variables distributions with electrons with Z->ee Systematic uncertainties Sensitivity for 1fb-1 Fermiophobic Higgs interpretation Summary of results

3 Description of Analysis Main background – Born/Box (irreducible) – Gamma+Jets (reducible) – QCD (reducible) Strategy – Remove nearly all reducible bkg – Separate into useful categories (in eta, R9, and possibly Ptgammagamma)

4 Loose Pre-Selection For now using all Photon HLT paths – Very small effect expected – preselection tighter than cuts Spike Cleaning from 38X RECO Lead p T > 30 GeV, Sublead p T > 20 GeV 0 < |  | < 2.5 – H/E < 0.1 – Track Iso hollow DR03 < *p T – Ecal Iso DR03 < *p T – Hcal Iso DR03 < *p T

5 Cut-Based Selection Lead p T > 40 GeV, Sublead p T > 30 GeV 0 < |  | < or < |  | < 2.5 (we would like to take it out) – H/E < 0.02 –  i  i  < 0.01(EB) 0.028(EE) – Pixel Veto – Track Iso hollow DR04 < *p T – Ecal Iso DR04 < *p T – Hcal Iso DR04 < *p T

6 Disclaimer on sequential cuts and other plots Sequential cuts are applied (on the two photons at the same time) After preselection lack of MC attributed to the Gen level Filter – Ratio of filtered to unfiltered for GamJet gam + fake is 0.74 before cuts and 1 after cuts – Not measured for QCD For now use old PTDR K-Factors for BG and constant K-factor for Higgs Signal (standard cross sections used in CMS) Mass cut at 100 GeV is applied to account for generator level mass cut in QCD and Gamma+Jet samples

7 Sequential Cuts Plots – 0) Preselection – 1) p T – 2) Track Iso – 3) Ecal Iso – 4) Hcal Iso – 5)  i  i  – 6) Pixel Veto – 7) H/E – 8)  -Gap Cut names

8 Sequential Cuts - Leading Photon More leading Photon variables in Backup

9 Lead p T

10 Lead  i  i 

11 Lead R9

12 Sequential Cuts - Subleading Photon More Subleading Photon variables in Backup

13 Sublead p T

14 Sublead  i  i 

15 Sublead R9

16 Sequential Cuts – Diphoton Variables More Diphoton variables in Backup

17 Sequential Cuts M 

18 Sequential Cuts p T 

19 Sequential Cuts – Tables Data/MC comparison GeV Mass Range Data/MC Comparison in 120±5 GeV window (tables for masses 105,110,115,130, and 140 in Backup) Signal Expectation and Efficiency & Expected Background under peak at 120 GeV for ∫L=1fb - 1 (tables for 110,115,130, and 140 in Backup)

Data ∑MC bkgd  -Born  -Box  Jet QCD Drell- Yan Preselection 2.28E E E pTpT Track Iso Ecal Iso Hcal Iso iiii Pixel Veto H/E  Gap Data/MC Comparison Mass Window GeV ∫L = 34.7 pb -1 PTDR K-Factors

21 Data ∑MC bkgd  - Born  -Box  Jet QCDZee Preselection pTpT Track Iso Ecal Iso Hcal Iso iiii Pixel Veto H/E  Gap Data/MC Event Yields in Mass Window 120±5 GeV for ∫L=34.7pb -1 Tables for 110, 115, 130 and 140 in Backup Slides PTDR K-Factors

22 Signal Yield and M H = 120 GeV for ∫L=1fb -1 M H = 120 GeV Signal  CUT  ALL Background/GeV at 120 Preselection pTpT Track Iso Ecal Iso Hcal Iso iiii Pixel Veto H/E  Gap Tables for 110, 115, 130 and 140 in Backup Slides PTDR K-Factors

23 N-1 Plots – Lead Photon Mass Cut at 100 GeV applied Lead Photon – More plots in Backup

24 Lead p T (N-1) Lead p T > 40 GeV Signal x 100

25 Lead p T Lead p T > 40 GeV Signal x 100

26 Lead  i  i  (N-1)  i  i   Signal x 100

27 Lead  i  i   i  i   Signal x 100

28 N-1 Plots – sublead photon Mass Cut at 100 GeV applied Sublead Photon – More plots in Backup

29 Sublead p T (N-1) Lead p T > 40 GeV Signal x 100

30 Sublead p T Lead p T > 40 GeV Signal x 100

31 Sublead  i  i  (N-1)  i  i   Signal x 100

32 Sublead  i  i   i  i   Signal x 100

33 Photon Categories Photon Categories – More plots in Backup We have different possibilities: – R9 (worst photon determines the diphoton category) 2 cats: split at cats: split at 0.90 and 0.95 – |Eta| (larger |eta| determines the diphoton category) 2 cats split barrrel/endcap 4 cats split 0.9, barrel/endcaps, 2.1 – Ptgammagamma 2 cats 40 GeV 3 cats 25 GeV and 50 GeV From these for now show (some in backup): – 4,6,12 cat R9, eta – 4 R9.eta x 2,3 Ptgamgam

34 All Selected Events SIGNAL x 10

35 SIGNAL x 100 All Selected Events

36 2 R9 x 2 Eta SIGNAL x 10

Signal In Categories 2R9 x 2 Eta 37 Fraction of events (M H = 120 GeV) Categor y Total Signal Gluon Fusion VB F Assoc. Prod. Background in Mass Window

38 2 R9 x 2 Eta x 2 p T  SIGNAL x 10

39 2 R9 x 2 Eta x 2 p T  SIGNAL x 10

Signal In Categories 2R9 x 2 Eta x 2 p T  40 Fraction of events (M H = 120 GeV) Categor y Total Signal Gluon Fusion VB F Assoc. Prod. Background in Mass Window Hi R9 Lo R9 Hi R9 Lo R9 Hi R9 Lo R9 Hi R9 Lo R9 EB EE EB EE Hi p T  Lo p T 

41 Photon Efficiency with Z Tag and Probe All results are (will appear) in: – CMS AN-2010/ Photon Efficiency Measurements using Tag and Probe Factorized T&P

42 Also study photon variables for electrons with pileup as function of NVTX

43 Background Estimate from Sidebands For now Exponential is fit to the mass distribution Still need to properly take out Higgs Mass hypothesis region Statistical error from the fit used in CLs method random experiments

44 Signal systematic error Using for now 12.5% quoted by N. Chanon

45 Sensitivity for 1 fb-1 REMAKE

46 Fermiophobic Higgs Only use information from Ptgamgam Analysis is exactly the same as SM one For now use 8 categories: – 2 R9 – 2 |eta| – 2 Ptgamgam For now extrapolate/interpolate sigma/BR

47 Fermiophobic H cross sections and BR (pb) Mass (GeV)VBFWH+ZHBR FFVBF*BR (ZH+WH) *BR REMAKE

48 Looking at the data Using 34.7 pb-1 Fundamental disclaimer: IT MAY BE WRONG IN MANY PLACES – Need cross checking Only have mass points at 90 and 110 GeV Approximate signal shape at other masses Approximate sigma and BR For the plots use 90 GeV (optimistic) Signal and BG syst errors included Mass resolution error probably optimistic (Need laser corrections)

49 Fermiophobic Higgs Exclusion Very-very preliminary REMAKE

50 Summary SM inclusive analysis in rather good shape Checks on mass resolution ongoing in DPG Will check better sensitivity and current fermiophobic 1-CL result Should cross check with others

51 Backup

52 Sequential Cuts - Leading Photon More leading Photon variables in Backup

53 Lead Pixel Veto

54 Lead Track Isolation

55 Lead Ecal Isolation

56 Lead Ecal Isolation

57 Lead Hcal Isolation

58 Lead p T

59 Lead p T

60 Lead  i  i 

61 Lead  i  i 

62 Lead H/E

63 Lead  Gap

64 Lead R9

65 Lead R9

66 Sequential Cuts - Subleading Photon More Subleading Photon variables in Backup

67 Sublead Pixel Veto

68 Sublead Track Isolation

69 Sublead Ecal Isolation

70 Sublead Ecal Isolation

71 Sublead Hcal Isolation

72 Sublead p T

73 Sublead p T

74 Sublead  i  i 

75 Sublead  i  i 

76 Sublead H/E

77 Sublead  -Gap

78 Sublead R9

79 Sublead R9

80 Sequential Cuts – Diphoton Variables More Diphoton variables in Backup

81 Sequential Cuts M 

82 Sequential Cuts p T 

83 Sequential Cuts p T 

84 Sequential Cuts  

85 Sequential Cuts  

86 Sequential Cuts cos(  *)

87 Data ∑MC bkgd  - Born  -Box  Jet QCDZee Preselection pTpT Track Iso Ecal Iso Hcal Iso iiii Pixel Veto H/E  Gap Data/MC Event Yields in Mass Window 110±5 GeV for ∫L=34.7pb -1 PTDR K-Factors

88 Data ∑MC bkgd  - Born  -Box  Jet QCDZee Preselection pTpT Track Iso Ecal Iso Hcal Iso iiii Pixel Veto H/E  Gap Data/MC Event Yields in Mass Window 115±5 GeV for ∫L=34.7pb -1 PTDR K-Factors

89 Data ∑MC bkgd  - Born  -Box  Jet QCDZee Preselection pTpT Track Iso Ecal Iso Hcal Iso iiii Pixel Veto H/E  Gap Data/MC Event Yields in Mass Window 130±5 GeV for ∫L=34.7pb -1 PTDR K-Factors

90 Data ∑MC bkgd  - Born  -Box  Jet QCDZee Preselection pTpT Track Iso Ecal Iso Hcal Iso iiii Pixel Veto H/E  Gap Data/MC Event Yields in Mass Window 140±5 GeV for ∫L=34.7pb -1 PTDR K-Factors

91 M H = 110 GeV Signal  CUT  ALL Background/GeV at 110 Preselection pTpT Track Iso Ecal Iso Hcal Iso iiii Pixel Veto H/E  Gap Signal Yield and M H = 110 GeV for ∫L=1fb -1 PTDR K-Factors

92 M H = 115 GeV Signal  CUT  ALL Background/GeV at 115 Preselection pTpT Track Iso Ecal Iso Hcal Iso iiii Pixel Veto H/E  Gap Signal Yield and M H = 115 GeV for ∫L=1fb -1 PTDR K-Factors

93 M H = 130 GeV Signal  CUT  ALL Background/GeV at 130 Preselection pTpT Track Iso Ecal Iso Hcal Iso iiii Pixel Veto H/E  Gap Signal Yield and M H = 130 GeV for ∫L=1fb -1 PTDR K-Factors

94 M H = 140 GeV Signal  CUT  ALL Background/GeV at 140 Preselection pTpT Track Iso Ecal Iso Hcal Iso iiii Pixel Veto H/E  Gap Signal Yield and M H = 140 GeV for ∫L=1fb -1 PTDR K-Factors

Data ∑MC bkgd  -Born  -Box  Jet QCD Drell- Yan Preselection 2.28E E E pTpT Track Iso Ecal Iso Hcal Iso iiii Pixel Veto H/E  Gap Data/MC Comparison Mass Window GeV ∫L = 34.7 pb -1 No K-Factors

96 Data ∑MC bkg d  - Born  -Box  Jet QCD Preselection pTpT Track Iso Ecal Iso Hcal Iso iiii Pixel Veto H/E  Gap Data/MC Event Yields in Mass Window 120±5 GeV for ∫L=34.7pb -1 No K-Factors

97 Signal Yield and M H = 120 GeV for ∫L=1fb -1 M H = 120 GeV Signal  CUT  ALL Background/GeV at 120 Preselection pTpT Track Iso Ecal Iso Hcal Iso iiii Pixel Veto H/E  Gap No K-Factors

98 N-1 Plots – Lead Photon Lead Photon – More plots in Backup

99 Lead p T (N-1) Lead p T > 40 GeV Signal x 100

100 Lead p T Lead p T > 40 GeV Signal x 100

101 Lead  (N-1) Suoercluster  or  Signal x 100

102 Lead  Suoercluster  or  Signal x 100

103 Lead H/E (N-1) H/E < 0.02 Signal x 100

104 Lead H/E H/E < 0.02 Signal x 100

105 Lead  i  i  (N-1)  i  i   Signal x 100

106 Lead  i  i   i  i   Signal x 100

107 Lead Pixel Veto (N-1) Veto Pixel Seed Signal x 100

108 Lead Pixel Veto Veto Pixel Seed Signal x 100

109 Lead Track Isolation (N-1) Track Sum p T (Hollow  R < 0.4) < *p T Signal x 100

110 Lead Track Isolation Track Sum p T (Hollow  R < 0.4) < *p T Signal x 100

111 Lead Ecal Isolation (N-1) Ecal Sum E T (  R < 0.4) < *p T Signal x 100

112 Lead Ecal Isolation Ecal Sum E T (  R < 0.4) < *p T Signal x 100

113 Lead Hcal Isolation (N-1) Hcal Sum E T (  R < 0.4) < *p T Signal x 100

114 Lead Hcal Isolation Hcal Sum E T (  R < 0.4) < *p T Signal x 100

115 N-1 Plots – sublead photon Sublead Photon – More plots in Backup

116 Sublead p T (N-1) Lead p T > 40 GeV Signal x 100

117 Sublead p T Lead p T > 40 GeV Signal x 100

118 Sublead  (N-1) Suoercluster  or  Signal x 100

119 Sublead  Suoercluster  or  Signal x 100

120 Sublead H/E (N-1) H/E < 0.02 Signal x 100

121 Sublead H/E H/E < 0.02 Signal x 100

122 Sublead  i  i  (N-1)  i  i   Signal x 100

123 Sublead  i  i   i  i   Signal x 100

124 Sublead Pixel Veto (N-1) Veto Pixel Seed Signal x 100

125 Sublead Pixel Veto Veto Pixel Seed Signal x 100

126 Sublead Track Isolation (N-1) Track Sum p T (Hollow  R < 0.4) < *p T Signal x 100

127 Sublead Track Isolation Track Sum p T (Hollow  R < 0.4) < *p T Signal x 100

128 Sublead Ecal Isolation (N-1) Ecal Sum E T (  R < 0.4) < *p T Signal x 100

129 Sublead Ecal Isolation Ecal Sum E T (  R < 0.4) < *p T Signal x 100

130 Sublead Hcal Isolation (N-1) Hcal Sum E T (  R < 0.4) < *p T Signal x 100

131 Sublead Hcal Isolation Hcal Sum E T (  R < 0.4) < *p T Signal x 100

132 Photon Categories Photon Categories – More plots in Backup We have different possibilities: – R9 (worst photon determines the diphoton category) 2 cats: split at cats: split at 0.90 and 0.95 – |Eta| (larger |eta| determines the diphoton category) 2 cats split barrrel/endcap 4 cats split 0.9, barrel/endcaps, 2.1 – Ptgammagamma 2 cats 40 GeV 3 cats 25 GeV and 50 GeV From these for now show (some in backup): – 4,6,12 cat R9, eta – 4 R9.eta x 2,3 Ptgamgam

133 3 R9 x 4 Eta SIGNAL x 10

Signal In Categories 3R9 x 4 Eta 134 Fraction of events (M H = 120 GeV) Categor y Total Signal Gluon Fusion VB F Assoc. Prod. Background in Mass Window

Categories 135

No Categories All Events Mass Plots – Signal Stacked – Signal Out Front 136

137 All Selected Events SIGNAL x 10

138 SIGNAL x 100 All Selected Events

4 Categories 4 Categories Mass Plots – Signal Stacked – Signal Out Front – Fine Binning (Signal Out Front) – Category Table 139

140 2 R9 x 2 Eta SIGNAL x 10

141 2 R9 x 2 Eta SIGNAL x 10

142 2 R9 x 2 Eta SIGNAL x 10

Signal In Categories 2R9 x 2 Eta 143 Fraction of events (M H = 120 GeV) Categor y Total Signal Gluon Fusion VB F Assoc. Prod. Background in Mass Window

8 Categories 8 Categories Mass Plots – Signal Stacked – Signal Out Front – Fine Binning (Signal Out Front) – Category Table 144

145 2 R9 x 2 Eta x 2 p T  SIGNAL x 10

146 2 R9 x 2 Eta x 2 p T  SIGNAL x 10

147 2 R9 x 2 Eta x 2 p T  SIGNAL x 10

Signal In Categories 2R9 x 2 Eta x 2 p T  148 Fraction of events (M H = 120 GeV) Categor y Total Signal Gluon Fusion VB F Assoc. Prod. Background in Mass Window Hi R9 Lo R9 Hi R9 Lo R9 Hi R9 Lo R9 Hi R9 Lo R9 EB EE EB EE Hi p T  Lo p T 

8 Categories 8 Categories DiPhoton P T Plots – Signal Stacked and Scaled by 10 – Signal Out Front and Scaled by

150 2 R9 x 2 Eta x 2 p T  SIGNAL x 10

151 2 R9 x 2 Eta x 2 p T  SIGNAL x 50

EXTRA 12 Categories Mass Plots – Signal Stacked – Signal Out Front – Fine Binning (Signal Out Front) – category table 152

153 3 R9 x 4 Eta SIGNAL x 10

154 3 R9 x 4 Eta SIGNAL x 10

155 3 R9 x 4 Eta SIGNAL x 10

Signal In Categories 3R9 x 4 Eta 156 Fraction of events (M H = 120 GeV) Categor y Total Signal Gluon Fusion VB F Assoc. Prod. Background in Mass Window