CMS-PAS-SUS-13-009

ATLAS ≥ 3 b-tags, 0,1 leptons

7/7/14 ICHEP 2014 60

) [GeV]

~g m(

400 600 800 1000 1200 1400

) [GeV]0 1χ∼m(

0 200 400 600 800 1000 1200 1400

0) χ1

∼

) < 2m(b) + m(

~g m(

) g~ ) >> m(

q~

0, m(

χ1

+∼ b b

→

~g production, g~

~g L^int = 20.1 fb^-1, s=8 TeV

0 lepton + 3 b-jets channel

All limits at 95% CL

ATLAS

σexp

±1 Expected limit

theory

σSUSY

± 1 Observed limit

(a)

) [GeV]

g~ m(

600 800 1000 1200 1400

) [GeV]0 1χ∼m(

0 200 400 600 800 1000

)

0

χ1

∼

) < 2m(t) + m(

~g m(

)

~g ) >> m(

~q

0, m(

χ1

+∼ t t

→ g~ production, g~

g~ L^int = 20.1 fb^-1, s=8 TeV

0 and 1 lepton + 3 b-jets channels

All limits at 95% CL

ATLAS

σexp

±1 Expected limit

theory

σSUSY

± 1 Observed limit

(b)

) [GeV]

g~ m(

400 600 800 1000 1200 1400

) [GeV]0 1χ∼m(

100 200 300 400 500 600 700 800 900 1000 1100

)

±

χ1

∼

) < m(b) + m(t) + m(

~g m(

) g~ ) >> m(

q~

±, m(

χ1

+∼ t

→ b

~g production, g~

g~ L^int = 20.1 fb^-1, s=8 TeV

0 and 1 lepton + 3 b-jets channels ) = 2 GeV

0

χ1

) - m( ∼

±

χ1

m( ∼

±

χ1

ff’ + ∼

±→ χ1

∼ All limits at 95% CL

ATLAS

σexp

±1 Expected limit

theory

σSUSY

± 1 Observed limit

(c)

Figure 13. Exclusion limits in the (m

˜g

, m

_˜⁰₁

) plane for the (a) Gbb, (b) Gtt and (c) Gtb models.

The dashed blue and solid bold red lines show the 95% CL expected and observed limits respec- tively, including all uncertainties except the theoretical signal cross-section uncertainty. The shaded (yellow) bands around the expected limits show the impact of the experimental and background theoretical uncertainties while the dotted red lines show the impact on the observed limit of the variation of the nominal signal cross-section by 1 of its theoretical uncertainty.

11 Conclusions

A search is presented in this paper for pair production of gluinos and sbottoms decaying into final states with multi- b -jets and missing transverse momentum. This analysis uses 20.1 fb

¹

of pp collisions at a centre-of-mass energy of 8 TeV collected by the ATLAS experiment at the LHC. Events with large missing transverse momentum, at least four to at least seven jets, and at least three b-jets are considered. The analysis is carried out separately for events with and without leptons in the final state, and the two channels are combined to enhance the sensitivity to SUSY scenarios with top quarks in the decay chain.

No significant excess of events above SM expectations is found in data and the results are interpreted in the context of various simplified models involving gluinos, sbottoms and stops. In particular, gluino masses up to about 1340 GeV are excluded at 95% CL in some

– 28 –

) [GeV]

g~ m(

400 600 800 1000 1200 1400

) [GeV]0 1χ∼m(

0 200 400 600 800 1000 1200 1400

0) χ1

∼

) < 2m(b) + m(

~g m(

) g~ ) >> m(

~q

0, m(

χ1

+∼ b b

→ g~ production,

~g

g~ L^int = 20.1 fb^-1, s=8 TeV

0 lepton + 3 b-jets channel

All limits at 95% CL

ATLAS

σexp

1

± Expected limit

theory

σSUSY

± 1 Observed limit

(a)

) [GeV]

~g m(

600 800 1000 1200 1400

) [GeV]0 1χ∼m(

0 200 400 600 800 1000

)

0

χ1

∼

) < 2m(t) + m(

~g m(

)

~g ) >> m(

q~

0, m(

χ1

+∼ t t

→ g~ production, g~

g~ L^int = 20.1 fb^-1, s=8 TeV

0 and 1 lepton + 3 b-jets channels

All limits at 95% CL

ATLAS

σexp

1

± Expected limit

theory

σSUSY

± 1 Observed limit

(b)

) [GeV]

g~ m(

400 600 800 1000 1200 1400

) [GeV]0 1χ∼m(

100 200 300 400 500 600 700 800 900 1000 1100

)

±

χ1

∼

) < m(b) + m(t) + m(

~g m(

)

~g ) >> m(

q~

±, m(

χ1

+∼ t

→ b g~ production,

~g

g~ L^int = 20.1 fb^-1, s=8 TeV

0 and 1 lepton + 3 b-jets channels ) = 2 GeV

0

χ1

) - m( ∼

±

χ1

m( ∼

±

χ1

ff’ + ∼

±→ χ1

∼ All limits at 95% CL

ATLAS

σexp

±1 Expected limit

theory

σSUSY

± 1 Observed limit

(c)

Figure 13. Exclusion limits in the (m

g˜

, m

_˜⁰

1

) plane for the (a) Gbb, (b) Gtt and (c) Gtb models.

The dashed blue and solid bold red lines show the 95% CL expected and observed limits respec- tively, including all uncertainties except the theoretical signal cross-section uncertainty. The shaded (yellow) bands around the expected limits show the impact of the experimental and background theoretical uncertainties while the dotted red lines show the impact on the observed limit of the variation of the nominal signal cross-section by 1 of its theoretical uncertainty.

11 Conclusions

A search is presented in this paper for pair production of gluinos and sbottoms decaying into final states with multi- b -jets and missing transverse momentum. This analysis uses 20.1 fb

¹

of pp collisions at a centre-of-mass energy of 8 TeV collected by the ATLAS experiment at the LHC. Events with large missing transverse momentum, at least four to at least seven jets, and at least three b -jets are considered. The analysis is carried out separately for events with and without leptons in the final state, and the two channels are combined to enhance the sensitivity to SUSY scenarios with top quarks in the decay chain.

No significant excess of events above SM expectations is found in data and the results are interpreted in the context of various simplified models involving gluinos, sbottoms and stops. In particular, gluino masses up to about 1340 GeV are excluded at 95% CL in some

– 28 –

) [GeV]

g~ m(

400 600 800 1000 1200 1400

) [GeV]0 1χ∼m(

0 200 400 600 800 1000 1200 1400

0) χ1

∼

) < 2m(b) + m(

~g m(

)

~g ) >> m(

q~

0, m(

χ1

+∼ b

→ b g~ production, g~

g~ L^int = 20.1 fb^-1, s=8 TeV

0 lepton + 3 b-jets channel

All limits at 95% CL

ATLAS

σexp

±1 Expected limit

theory

σSUSY

± 1 Observed limit

(a)

) [GeV] g~ m(

600 800 1000 1200 1400

) [GeV]0 1χ∼m(

0 200 400 600 800 1000

)

0

χ1

∼

) < 2m(t) + m(

~g m(

)

~g ) >> m(

q~

0, m(

χ1

+∼ t

→ t g~ production, g~

g~ L^int = 20.1 fb^-1, s=8 TeV

0 and 1 lepton + 3 b-jets channels

All limits at 95% CL

ATLAS

σexp

±1 Expected limit

theory

σSUSY

± 1 Observed limit

(b)

) [GeV]

g~ m(

400 600 800 1000 1200 1400

) [GeV]0 1χ∼m(

100 200 300 400 500 600 700 800 900 1000 1100

)

±

χ1

∼

) < m(b) + m(t) + m(

~g m(

) g~ ) >> m(

q~

±, m(

χ1

+∼ t

→ b g~ production, g~

g~ L^int = 20.1 fb^-1, s=8 TeV

0 and 1 lepton + 3 b-jets channels ) = 2 GeV

0

χ1

) - m( ∼

±

χ1

m( ∼

±

χ1

ff’ + ∼

±→ χ1

∼ All limits at 95% CL

ATLAS

σexp

±1 Expected limit

theory

σSUSY

± 1 Observed limit

(c)

Figure 13. Exclusion limits in the ( m

g˜

, m

_˜⁰

1

) plane for the (a) Gbb, (b) Gtt and (c) Gtb models.

The dashed blue and solid bold red lines show the 95% CL expected and observed limits respec- tively, including all uncertainties except the theoretical signal cross-section uncertainty. The shaded (yellow) bands around the expected limits show the impact of the experimental and background theoretical uncertainties while the dotted red lines show the impact on the observed limit of the variation of the nominal signal cross-section by 1 of its theoretical uncertainty.

11 Conclusions

A search is presented in this paper for pair production of gluinos and sbottoms decaying into final states with multi- b -jets and missing transverse momentum. This analysis uses 20.1 fb

¹

of pp collisions at a centre-of-mass energy of 8 TeV collected by the ATLAS experiment at the LHC. Events with large missing transverse momentum, at least four to at least seven jets, and at least three b-jets are considered. The analysis is carried out separately for events with and without leptons in the final state, and the two channels are combined to enhance the sensitivity to SUSY scenarios with top quarks in the decay chain.

No significant excess of events above SM expectations is found in data and the results are interpreted in the context of various simplified models involving gluinos, sbottoms and stops. In particular, gluino masses up to about 1340 GeV are excluded at 95% CL in some

– 28 –

(a) (b)

(c)

Figure 2. This figure shows the diagrams for the (a) Gbb, (b) Gtt and (c) Gtb scenarios studied in this paper. The different decay modes are discussed in the text.

ratio of 100% assumed for both ˜t₁ ! b+ ˜^±₁ and ˜b₁ !t+ ˜^±₁. The mass difference between charginos and neutralinos is set to 2 GeV, such that the fermions produced in ˜^±₁ ! ˜⁰₁+f f⁰ do not contribute to the event selection, and gluino decays result in effectively three-body decays (bt˜⁰₁). Two top quarks, two bottom quarks and two neutralinos are expected as decay products of the two gluinos, yielding signatures with or without leptons.

The results are also interpreted in the context of a minimal supergravity model mSUGRA/CMSSM [29–34] specified by five parameters: the universal scalar mass m₀, the universal gaugino mass m_1/2, the universal trilinear scalar coupling A0, the ratio of the vacuum expectation values of the two Higgs fields tan , and the sign of the higgsino mass parameter µ. The model used for interpretation has A₀ = 2m₀, tan = 30,µ >0 and is designed to accommodate a SM Higgs boson with a mass of around 125 GeV, in the m₀ m_1/2 range relevant for this analysis.

– 5 –

(a) (b)

(c)

Figure 2. This figure shows the diagrams for the (a) Gbb, (b) Gtt and (c) Gtb scenarios studied in this paper. The different decay modes are discussed in the text.

ratio of 100% assumed for both ˜t₁ ! b+ ˜^±₁ and ˜b₁ ! t+ ˜^±₁. The mass difference between charginos and neutralinos is set to 2 GeV, such that the fermions produced in ˜^±₁ ! ˜⁰₁+f f⁰ do not contribute to the event selection, and gluino decays result in effectively three-body decays (bt˜⁰₁). Two top quarks, two bottom quarks and two neutralinos are expected as decay products of the two gluinos, yielding signatures with or without leptons.

The results are also interpreted in the context of a minimal supergravity model mSUGRA/CMSSM [29–34] specified by five parameters: the universal scalar massm₀, the universal gaugino mass m_1/2, the universal trilinear scalar coupling A₀, the ratio of the vacuum expectation values of the two Higgs fields tan , and the sign of the higgsino mass parameter µ. The model used for interpretation has A₀ = 2m₀,tan = 30, µ >0 and is designed to accommodate a SM Higgs boson with a mass of around 125 GeV, in the m₀ m_1/2 range relevant for this analysis.

(a) (b)

(c)

Figure 2. This figure shows the diagrams for the (a) Gbb, (b) Gtt and (c) Gtb scenarios studied in this paper. The different decay modes are discussed in the text.

ratio of 100% assumed for both ˜t₁ ! b+ ˜^±₁ and ˜b₁ ! t+ ˜^±₁. The mass difference between charginos and neutralinos is set to 2 GeV, such that the fermions produced in ˜^±₁ ! ˜⁰₁+f f⁰ do not contribute to the event selection, and gluino decays result in effectively three-body decays (bt˜⁰₁). Two top quarks, two bottom quarks and two neutralinos are expected as decay products of the two gluinos, yielding signatures with or without leptons.

The results are also interpreted in the context of a minimal supergravity model mSUGRA/CMSSM [29–34] specified by five parameters: the universal scalar mass m₀, the universal gaugino mass m_1/2, the universal trilinear scalar coupling A₀, the ratio of the vacuum expectation values of the two Higgs fields tan , and the sign of the higgsino mass parameter µ. The model used for interpretation has A₀ = 2m₀,tan = 30, µ >0 and is designed to accommodate a SM Higgs boson with a mass of around 125 GeV, in the m₀ m_1/2 range relevant for this analysis.

arXive: 1405.7875

0 0.5 1 1.5 2 2.5 3

Events

1 10 102

= 8 TeV

s

∫

L dt = 20.3 fb^-1 ATLAS

τb SR0

Data 2012 Total SM Reducible WZ ZZ

V + tZ t t Higgs VVV

Wh-mediated (130,0)

min

φll’

∆

0 0.5 1 1.5 2 2.5 3

Data/SM

0 0.5 1 1.5 2

(a)

0 20 40 60 80 100 120 140

Events / 25 GeV

10-1

1 10

102 ^{s= 8 TeV}

L dt = 20.3 fb-1

∫

ATLAS

SR1τ

Data 2012 Total SM Reducible WZ ZZ

V + tZ t t Higgs VVV

Wh-mediated (140,10)

[GeV]

miss

ET

0 20 40 60 80 100 120 140

Data/SM

0 1 2 3 4

(b)

0 20 40 60 80 100 120 140 160 180 200

Events / 20 GeV

10-1

1 10 102

103

104

= 8 TeV

s

∫

L dt = 20.3 fb^-1 ATLAS

a τ SR2

Data 2012 Total SM Reducible WZ ZZ

V + tZ t t Higgs VVV

-mediated (275,25) τ∼L

[GeV]

max

mT2

0 20 40 60 80 100 120 140 160 180 200

Data/SM

0 0.5 1 1.5 2

(c)

20 40 60 80 100 120 140 160 180 200 220

Events / 50 GeV

10-1

1 10 102

103 _{s= 8 TeV} -1

L dt = 20.3 fb

∫

ATLAS

τb SR2

Data 2012 Total SM Reducible WZ ZZ

V + tZ t t Higgs VVV

Wh-mediated (130,0)

[GeV]

τ

mτ

20 40 60 80 100 120 140 160 180 200 220

Data/SM

0 0.5 1 1.5 2

(d)

Figure 6. Expected distributions of SM background events and observed data distributions for (a) ∆φ

^minℓℓ^′

, (b) E

_T^miss

, (c) m

^max_T2

and (d) m

^{τ τ}

variables in the SR0τ b, SR1τ , SR2τ a and SR2τb regions respectively, prior to the requirements on these variables. Arrows indicate the limits on the values of the variables used to define the signal regions. Also shown are the respective contributions of the various background processes as described in the legend. Both the statistical and systematic uncertainties are shown. The last bin in each distribution includes the overflow. The plots also show the distribution for signal hypotheses, where the parentheses following the simplified model denote the mass parameters in GeV as (m( ˜ χ

^±₁

, χ ˜

⁰₂

), m( ˜ χ

⁰₁

)).

background. These limits improve those reported by ATLAS in ref. [17] by ∼ 200 GeV.

In the ˜ τ

L

-mediated simplified model, ˜ χ

^±₁

and ˜ χ

⁰₂

masses are excluded up to 380 GeV for massless ˜ χ

⁰₁

as shown in figure 7(c). The low m

SFOS

SR0τa bins offer the best sensitivity to the small m

_χ˜⁰

2

− m

_χ˜⁰

1

scenarios, and SR2τ a to the high-mass ˜ χ

^±₁

, ˜ χ

⁰₂

scenarios. The results in the low m

SFOS

SR0τ a bins lead to a weaker observed exclusion than expected for the compressed scenarios.

In the W h-mediated simplified model shown in figure 7(d), ˜ χ

^±₁

and ˜ χ

⁰₂

masses are excluded up to 148 GeV. The regions SR0τ a, SR0τ b, SR1τ and SR2τ b offer the best sen- sitivity in this simplified model when statistically combined. The results in some SR0τ a bins and SR1τ are responsible for the observed exclusion being slightly weaker than ex-

– 20 –

ATLAS Ewkinos

7/7/14 ICHEP 2014 61

arXive: 1407.0350 Di-tau + MET

Di-e/mu + MET arXive: 1403.5294 Trilepton + MET arXive: 1402.7029

Events / 10 GeV

10-1

1 10 102

103

104

Data SM Total Multi-jet W+jets Z+jets

Diboson Top quarks

) = (250, 100) GeV

0 χ1

, m∼ 0 χ2

(m∼

) = (250, 50) GeV

0 1 χ∼

±, m

χ1

(m∼

) = (127, 0) GeV

0 1 χ∼

,m

τR

(m∼

ATLAS

= 8 TeV, 20.3 fb-1

s SR-C1N2

SR

[GeV]

mT2

0 20 40 60 80 100 120 140 160 180 200 220

Data/SM

0 0.5 1 1.5 2

(a) SR-C1N2

Events / 10 GeV

10-1

1 10 102

103

Data SM Total Multi-jet W+jets Z+jets

Diboson Top quarks

) = (250, 100) GeV

0 χ1

, m∼ 0 χ2

(m∼

) = (250, 50) GeV

0 1 χ∼

±, m

χ1

(m∼

) = (127, 0) GeV

0 1 χ∼

,m

τR

(m∼

ATLAS

= 8 TeV, 20.3 fb-1

s SR-C1C1

SR

[GeV]

2 Tτ 1+m

Tτ

m

100 150 200 250 300 350 400 450

Data/SM

0 0.5 1 1.5 2

(b) SR-C1C1

Events / 10 GeV

10-1

1 10 102

103

Data SM Total Multi-jet W+jets Z+jets

Diboson Top quarks

) = (250, 100) GeV

0 χ1

, m∼ 0 χ2

(m∼

) = (250, 50) GeV

0 1 χ∼

±, m

χ1

(m∼

) = (127, 0) GeV

0 1 χ∼

,m

τR

(m∼

ATLAS

= 8 TeV, 20.3 fb-1

s

SR-DS-highMass

SR

[GeV]

meff

150 200 250 300 350

Data/SM

0 0.5 1 1.5 2

(c) SR-DS-highMass

Events / 10 GeV

10-1

1 10 102

103

Data SM Total Multi-jet W+jets Z+jets

Diboson Top quarks

) = (250, 100) GeV

0 χ1

, m∼ 0 χ2

(m∼

) = (250, 50) GeV

0 1 χ∼

±, m

χ1

(m∼

) = (127, 0) GeV

0 1 χ∼

,m

τR

(m∼

ATLAS

= 8 TeV, 20.3 fb-1

s SR-DS-lowMass

SR

[GeV]

meff

100 150 200 250 300 350 400

Data/SM

0 0.5 1 1.5 2

(d) SR-DS-lowMass

Figure 6. Distributions of relevant kinematic variables before the requirement on the given variable is applied: (a) m

_T2

for SR-C1N2, (b) m

_T⌧1

+ m

_T⌧2

for SR-C1C1, (c) m

_e↵

for SR-DS-highMass, and (d) m

_e↵

for SR-DS-lowMass. The stacked histograms show the expected SM backgrounds normalised to 20.3 fb

¹

. The multi-jet contribution is estimated from data using the ABCD method.

The hatched bands represent the sum in quadrature of systematic and statistical uncertainties on the total SM background. The lower panels show the ratio of data to the total SM background estimate.

– 25 – (a)

[GeV]

mT2

Events / 10 GeV

10-2

10-1

1 10 102

103

104

105

106

Data Z+jets WW

+Wt t t ZV

Non-prompt leptons Higgs

Bkg. Uncert.

) = (350,0) GeV

0 χ1

,m∼

± χ1

(m∼

) = (251,10) GeV

0 1 χ∼

±,m

~l

(m

= 8 TeV, 20.3 fb-1

s , ATLAS SF channel

[GeV]

mT2

0 20 40 60 80 100 120 140 160 180 200

Data/SM

0 0.5 1 1.5

2

(b)

[GeV]

mT2

Events / 10 GeV

10-2

10-1

1 10 102

103

104

105

Data Z+jets WW

+Wt t t ZV

Non-prompt leptons Higgs

Bkg. Uncert.

) = (350,0) GeV

0 χ∼1

±,m

χ1

(m∼

= 8 TeV, 20.3 fb-1

s , ATLAS DF channel

[GeV]

mT2

0 20 40 60 80 100 120 140 160 180 200

Data/SM

0 0.5 1 1.5 2

(c)

[GeV]

miss,rel

ET

Events / 10 GeV

10-2

10-1

1 10 102

103

104

Data Z+jets WW

+Wt t t ZV

Non-prompt leptons Higgs

Bkg. Uncert.

) = (250,0) GeV

0 χ1

,m∼ 0 χ2 ,∼

± χ1

(m∼

= 8 TeV, 20.3 fb-1

s , ATLAS SF channel

[GeV]

miss,rel

ET

0 20 40 60 80 100 120 140 160 180 200

Data/SM

0 0.5 1 1.5 2

Figure 4. Distributions of m

T2

in the (a) SF and (b) DF samples that satisfy all the SR-m

T2

selection criteria except for the one on m

T2

, and of (c) E

_T^miss,rel

in the sample that satisfies all the SR-Zjets selection criteria except for the one on E

_T^miss,rel

. The lower panel of each plot shows the ratio between data and the SM background prediction. The hashed regions represent the sum in quadrature of systematic uncertainties and statistical uncertainties arising from the numbers of MC events. Predicted signal distributions in simplified models with m

χ˜^±1

= 350 GeV, m

ℓ^˜

= m

ν˜

= 175 GeV and m

χ˜⁰1

= 0 are superimposed in (a) and (b), m

ℓ^˜

= 251 GeV and m

χ˜⁰1

= 10 GeV in (a), and m

χ˜^±1

= m

χ˜⁰2

= 250 GeV and m

χ˜⁰1

= 0 in (c). Red arrows indicate the selection criteria for SR-m

T2

and SR-Z jets.

except for the theoretical signal cross-section uncertainty arising from the PDF and the renormalization and factorization scales. The solid band around the expected exclusion contour shows the ± 1σ result where all uncertainties, except those on the signal cross- sections, are considered. The dotted lines around the observed exclusion contour represent the results obtained when varying the nominal signal cross-section by ± 1σ theoretical un- certainty. All mass limits hereafter quoted correspond to the signal cross-sections reduced by 1σ.

Figure 5 shows the 95% CL exclusion region obtained from SR-m _T2 on the simplified

– 19 –

Table 9. Summary of the dominant systematic uncertainties in the background estimates for each signal region. Uncertainties are quoted relative to the total expected background. For the 20 bins of the SR0τ a the range of the uncertainties is provided.

SR0τa SR0τb SR1τ SR2τa SR2τb

Cross-section 4–25% 37% 9% 3.1% 3.0%

Generator 3.2–35% 11% 3.1% 6% <1%

Statistics on irreducible background 0.8–26% 8% 5% 5% 3.1%

Statistics on reducible background 0.4–29% 14% 8% 13% 12%

Electron misidentification probability 0.3–10% 1.3% <1% – – Muon misidentification probability 0.1–24% 2.2% <1% – –

τ misidentification probability – – 8% 4% 5%

01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20

Events

10-1

1 10 102

103

104 _{s= 8 TeV} -1

L dt = 20.3 fb

∫

ATLAS Data

Total SM Reducible WZ ZZ

V + tZ t t Higgs VVV

WZ mediated (175,100) mediated (688,63) lL

~

τa SR0

a bin τ SR0

01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20

Data/SM

0 0.5 1 1.5 2

(a)

60 80 100 120 140 160 180 200 220 240 260 280

Events / 20 GeV

10-1

1 10 102

103

104

105

= 8 TeV

s

∫

L dt = 20.3 fb^-1

ATLAS Data

Total SM Reducible WZ ZZ

V + tZ t t Higgs VVV

WZ mediated (175,100) mediated (688,63) lL

~

τa SR0

[GeV]

miss

ET

60 80 100 120 140 160 180 200 220 240 260 280

Data/SM

0 0.5 1 1.5 2

(b)

0 50 100 150 200 250 300 350 400 450

Events / 20 GeV

10-1

1 10 102

103

104

= 8 TeV

s

∫

L dt = 20.3 fb^-1

ATLAS Data

Total SM Reducible WZ ZZ

V + tZ t t Higgs VVV

WZ mediated (175,100) mediated (688,63) lL

~

τa SR0

[GeV]

mT

0 50 100 150 200 250 300 350 400 450

Data/SM

0 0.5 1 1.5 2

(c)

50 100 150 200 250 300 350 400

Events / 20 GeV

10-1

1 10 102

103

104

105

= 8 TeV

s

∫

L dt = 20.3 fb^-1

ATLAS Data

Total SM Reducible WZ ZZ

V + tZ t t Higgs VVV

WZ mediated (175,100) mediated (688,63) lL

~

τa SR0

[GeV]

mSFOS

50 100 150 200 250 300 350 400

Data/SM

0 0.5 1 1.5 2

(d)

Figure 5. Expected distributions of SM background events and observed data distributions in (a) the binned signal regions SR0τa. The distributions of (b) E

_T^miss

, (c) m

T

and (d) m

SFOS

are shown in the summation of all SR0τ a regions prior to the requirements on these variables. Also shown are the respective contributions of the various background processes as described in the legend. Both the statistical and systematic uncertainties are shown. The last bin in each distribution includes the overflow. For illustration, the distributions of signal hypotheses are also shown.

– 19 –

Trilepton e/mu Trilepton 2tau

Few additional New Results not covered in the talk

Mono-Photons

Black Hole

CMS Mono-photon

7/7/14 ICHEP 2014 63

In document Beyond the Standard Model Highlights of Experimental Results from ATLAS & CMS (página 59-63)