ATLAS Sensitivity to the Standard Model Higgs in the HW and HZ Channels at High Transverse Momenta

This page contains approved plots and results as they appear in the ATL-PHYS-PUB-2009-088 note. Only the note contains all the relevant information and should thus be consulted if one of the plots is used.

InvMassCompThreeD0sAfterCut10_ATLAS InvMassCompThreeD0sAfterCut10_ATLAS.
Caption: (Left) Invariant mass distribution of the Higgs candidates in the WH signal sample for various values of the ycut clustering parameter, before application of b-tagging and jet vetoes. Numbers are projected to an integrated luminosity of 30 fb-1. (Right) Distribution of the y parameter values for the signal and various backgrounds in the lν channel, after the analysis selection is applied, except for the b-tagging requirement. The histograms are normalized to an area of 1.

massBBDR. massBBOverPtHiggsDR.
Caption: Distributions of the kinematics of the bb system in the Wbb background comparing HERWIG (Wg -> bb PS) and AcerMC (Wbb ME), after selecting bb pairs with pt > 200 GeV and 1.3 > Δ R (bb) >0.3. The left plot shows the mass distribution for the bb pair, the right plot the same quantity divided by its transverse momentum. Both distributions are normalised to their relative cross sections in fb.

CombinedPerformanceLightWeights. CombinedPerformanceCharmWeights.
Caption: Rejection against light-quark jets (left) and against charm-quark jets (right) as a function of the b-tagging efficiency on the single subjet, for both the COMB and JetFitter b-tagging algorithms. The performance for the JetFitter algorithm is also shown after dedicated optimisation to reject c-jets.

PlotSOverSqrtB. PlotSOverB.
Caption: Statistical significance (left) and signal over background ratio (right) after 30 fb-1 for the lνbb channel as a function of the signal efficiency corresponding to a certain b-tagging cut, using either the ATLAS default combined b-tagging algorithm or the JetFitter algorithm tuned with a prior background light-jet content of 20%.

filteredMasshistoLog_Wjet_ATLAS. finalmassll. finalmassvv.
Caption: Distribution of the invariant mass of the Higgs candidate after all selection cuts. (a) lνbb channel (b) llbb channel and (c) MET bb channel. The signals (for mH = 120~GeV) are shown on top of the backgrounds. All distributions are normalized to an integrated luminosity of 30 fb-1.

signalq. signalsig.
Caption: q(0) (left) and significance (right) for a range of possible signal experiments.
[with an integrated luminosity of 30 fb-1]

Major updates:
-- CalebLampen - 2009-08-24

Responsible: CalebLeeParnellLampenExCern
Last reviewed by: Never reviewed

Topic attachments
I Attachment History Action Size Date Who Comment
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PNGpng CombinedPerformanceCharmWeights.png r2 r1 manage 67.8 K 2009-08-24 - 16:06 CalebLeeParnellLampenExCern  
Unknown file formateps CombinedPerformanceLightWeights.eps r1 manage 30.3 K 2009-08-24 - 14:07 CalebLeeParnellLampenExCern  
PNGpng CombinedPerformanceLightWeights.png r2 r1 manage 71.9 K 2009-08-24 - 16:07 CalebLeeParnellLampenExCern  
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PNGpng InvMassCompThreeD0sAfterCut10_ATLAS.png r2 r1 manage 83.1 K 2009-08-24 - 14:53 CalebLeeParnellLampenExCern  
Unknown file formateps PlotSOverB.eps r1 manage 9.8 K 2009-08-24 - 16:29 CalebLeeParnellLampenExCern  
PNGpng PlotSOverB.png r1 manage 75.5 K 2009-08-24 - 16:29 CalebLeeParnellLampenExCern  
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PNGpng PlotSOverSqrtB.png r1 manage 70.2 K 2009-08-24 - 16:30 CalebLeeParnellLampenExCern  
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PNGpng filteredMasshistoLog_Wjet_ATLAS.png r2 r1 manage 187.1 K 2009-08-24 - 16:57 CalebLeeParnellLampenExCern  
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PNGpng finalmassll.png r2 r1 manage 143.4 K 2009-08-24 - 16:58 CalebLeeParnellLampenExCern  
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PNGpng finalmassvv.png r2 r1 manage 208.1 K 2009-08-24 - 16:58 CalebLeeParnellLampenExCern  
Unknown file formateps massBBDR.eps r1 manage 9.4 K 2009-08-24 - 15:23 CalebLeeParnellLampenExCern  
PNGpng massBBDR.png r1 manage 79.2 K 2009-08-24 - 15:23 CalebLeeParnellLampenExCern  
Unknown file formateps massBBOverPtHiggsDR.eps r1 manage 7.9 K 2009-08-24 - 15:23 CalebLeeParnellLampenExCern  
PNGpng massBBOverPtHiggsDR.png r1 manage 64.4 K 2009-08-24 - 15:24 CalebLeeParnellLampenExCern  
Unknown file formateps signalq.eps r1 manage 10.2 K 2009-08-24 - 17:10 CalebLeeParnellLampenExCern  
PNGpng signalq.png r1 manage 57.1 K 2009-08-24 - 17:11 CalebLeeParnellLampenExCern  
Unknown file formateps signalsig.eps r1 manage 11.3 K 2009-08-24 - 17:11 CalebLeeParnellLampenExCern  
PNGpng signalsig.png r1 manage 67.4 K 2009-08-24 - 17:11 CalebLeeParnellLampenExCern  
Unknown file formateps ycutVariable_ATLAS.eps r1 manage 13.5 K 2009-08-24 - 14:47 CalebLeeParnellLampenExCern  
PNGpng ycutVariable_ATLAS.png r6 r5 r4 r3 r2 manage 88.7 K 2009-08-24 - 17:19 CalebLeeParnellLampenExCern  
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Topic revision: r5 - 2011-01-26 - PatrickJussel
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