
META TOPICPARENT 
name="SUS12002" 
Search for supersymmetry in hadronic final states using M_{T2} in pp collisions at sqrt(s) = 7 TeV 

MT2distributions


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Figure 
Figure2 
Abbreviated Caption 


M_{T2} distribution for the M_{T2}Analysis with H_{T} > 750 GeV. The last bin contains the overflow. The different MC backgrounds are stacked on top of each other and normalized to 4.73 fb−1. The LM6 signal distribution is normalized to the same integrated luminosity and overlayed on the Standard Model backgrounds. The right plot also includes a data/MC ratio comparison. Only statistical uncertainties are shown in the ratio plot, both for data and MC. 


M_{T2} distribution for the M_{T2}Analysis with H_{T} > 750 GeV. The bin size is variable chosen such that the last five bins coincide with the definition of the signal regions. The last bin contains the overflow. The different MC backgrounds are stacked on top of each other and normalized to 4.73 fb−1. The LM6 signal distribution is normalized to the same integrated luminosity and overlayed on the Standard Model backgrounds. The right plot also includes a data/MC ratio comparison. Only statistical uncertainties are shown in the ratio plot, both for data and MC. 

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Figure 
Abbreviated Caption 

M_{T2} distribution for the M_{T2}Analysis with H_{T} > 750 GeV. The last bin contains the overflow. The different MC backgrounds are stacked on top of each other and normalized to 4.73 fb−1. The LM6 signal distribution is normalized to the same integrated luminosity and overlayed on the Standard Model backgrounds. The lower plot also includes a data/MC ratio comparison. Only statistical uncertainties are shown in the ratio plot, both for data and MC. 

M_{T2} distribution for the M_{T2}Analysis with H_{T} > 750 GeV. The bin size is variable chosen such that the last five bins coincide with the definition of the signal regions. The last bin contains the overflow. The different MC backgrounds are stacked on top of each other and normalized to 4.73 fb−1. The LM6 signal distribution is normalized to the same integrated luminosity and overlayed on the Standard Model backgrounds. The lower plot also includes a data/MC ratio comparison. Only statistical uncertainties are shown in the ratio plot, both for data and MC. 


QCD factorization method


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Figure illustrating the QCD estimation method in data. The data shows the ratio as a function of M_{T2}. The solid points correspond to raw data after all selection cuts, while the dashed points correspond to data after subtracting electroweak and tt̄ backgrounds. An exponential fit (green curve) is performed in the region 50 < M_{T2} < 80 GeV where the nonQCD contribution is minimal. The constant term of the final functional model (blue curve) is taken as the value of the exponential at M_{T2} = 250 GeV. 

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Figure illustrating the QCD estimation method in data. The data shows the ratio as a function of M_{T2}. The solid points correspond to raw data after all selection cuts, while the dashed points correspond to data after subtracting processes other than QCD (i.e., electroweak and tt̄). An exponential fit (green curve) is performed in the region 50 < M_{T2} < 80 GeV where the nonQCD contribution is minimal. The constant term of the final functional model (blue curve) is taken as the value of the exponential at M_{T2} = 250 GeV. 


Z(nunu) from W(mu nu)


Z(nunu) from Gamma+jets


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Figure1 
Figure2 
Abbreviated Caption 


Photon M_{T2} spectrum, where the photon was added to the METvector to mimic the Z(nunu) kinematics. The right plot also includes a data/MC ratio comparison. 


Left: Vector boson transverse momenta for and events for data and MC in 4.97 fb1. Right: to ratio as a function of vector boson transverse momenta both for data and MC. Only statistical errors are shown. 

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Figure 
Abbreviated Caption 

Photon M_{T2} spectrum, where the photon was added to the METvector to mimic the Z(nunu) kinematics. The lower plot also includes a data/MC ratio comparison. 

Top: Vector boson transverse momenta for and events for data and MC in 4.97 fb1. Bottom: to ratio as a function of vector boson transverse momenta both for data and MC. Only statistical errors are shown. 


Lost Lepton background estimate


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Figure 
Figure2 
Abbreviated Caption 


Muon transverse momentum for the lepton selection used in the Lost Lepton method. The right plot also includes a data/MC ratio comparison. Only statistical uncertainties are shown in the ratio plot, both for data and MC. 


M_{T2} distribution for the events with a reconstructed muon. All selection cuts are applied (but the lepton veto is inverted). The right plot also includes a data/MC ratio comparison. Only statistical uncertainties are shown in the ratio plot, both for data and MC. 

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Figure 
Abbreviated Caption 

Muon transverse momentum for the lepton selection used in the Lost Lepton method. The lower plot also includes a data/MC ratio comparison. Only statistical uncertainties are shown in the ratio plot, both for data and MC. 

M_{T2} distribution for the events with a reconstructed muon. All selection cuts are applied (but the lepton veto is inverted). The lower plot also includes a data/MC ratio comparison. Only statistical uncertainties are shown in the ratio plot, both for data and MC. 


Other distributions 

MT2bAnalysis


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Background prediction
