(r3) PhysicsResultsSUS11007 < CMSPublic

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---+!! Search for Physics Beyond the Standard Model in Events with Opposite-sign Tau Pairs and Missing Energy

---++ Abstract

A search for physics beyond the Standard Model with highly energetic jets, large momentum imbalance, and opposite sign tau pairs in the final state is performed using data samples with integrated luminosities of 1 fb<sup>-1</sup> of _pp_ collisions at &#8730;s = 7 TeV collected with the CMS detector at the LHC at CERN. The Standard Model backgrounds are estimated using data-driven techniques. The number of observed events is in good agreement with the predictions for Standard Model background processes and upper limits are set in the context of models of supersymmetry. 


---++ Approved Plots from SUS-11-007 (<i> click on plot to get .pdf </i>)

%TABLE{ datavalign="middle" }%
| *Figure * | *Abbreviated Caption* |
| [[%ATTACHURL%/HighPt-Preselection-MET-anyLTau-met_LM13.pdf][<img src="%ATTACHURLPATH%/HighPt-Preselection-MET-anyLTau-met_LM13.png" alt="HighPt-Preselection-MET-anyLTau-met_LM13.png" width='300' />]] | Fig 1a: Distribution of missing transverse energy E<sub>T</sub><sup>miss</sup> for SM MC and data after preselection. The MC distributions for the LM13 benchmark point are also shown. |
| [[%ATTACHURL%/HighPt-Preselection-MET-anyLTau-ht_LM13.pdf][<img src="%ATTACHURLPATH%/HighPt-Preselection-MET-anyLTau-ht_LM13.png" alt="HighPt-Preselection-MET-anyLTau-ht_LM13.png" width='300' />]] | Fig 1b: Distribution of scalar sum of jet transverse energies (H<sub>T</sub>) for SM MC and data after preselection. The MC distributions for the LM13 benchmark point are also shown. |
| [[%ATTACHURL%/HighPt-Preselection-MET-anyLTau-p4_M_LM13.pdf][<img src="%ATTACHURLPATH%/HighPt-Preselection-MET-anyLTau-p4_M_LM13.png" alt="HighPt-Preselection-MET-anyLTau-p4_M_LM13.png" width='300' />]] | Fig 1c: Distribution of dilepton invariant mass _m(ll)_ for SM MC and data after preselection. The MC distributions for the LM13 benchmark point are also shown. |
| [[%ATTACHURL%/ht_vs_met_yields_MergedData.pdf][<img src="%ATTACHURLPATH%/ht_vs_met_yields_MergedData.png" alt="ht_vs_met_yields_MergedData.png" width='300' />]] | Fig 2: Distribution of E<sub>T</sub><sup>miss</sup> vs H<sub>T</sub> for data. The high E<sub>T</sub><sup>miss</sup> (high H<sub>T</sub>) signal region is indicated with the blue dotted (red striped) region. |
| [[%ATTACHURL%/HT_0_AfterTTBarControl.pdf][<img src="%ATTACHURLPATH%/HT_0_AfterTTBarControl.png" alt="HT_0_AfterTTBarControl.png" alt="HT_0_AfterTTBarControl.png" alt="HT_0_AfterTTBarControl.png" width='300' />]] | Fig 3a: H<sub>T</sub> distribution in the ttbar region. |
| [[%ATTACHURL%/20110721_QCDControlDphiMhtJet2log.pdf][<img src="%ATTACHURLPATH%/20110721_QCDControlDphiMhtJet2log.png" alt="20110721_QCDControlDphiMhtJet2log.png" width='300' />]] | Fig 3b: Standard Model background enhanced sample depicting the effectiveness of the cut of &#8710;&#966;(MHT, j<sub>2</sub>) < 0.15 in selecting a high purity sample of QCD events. |
| [[%ATTACHURL%/ZinvJets_MHT.pdf][<img src="%ATTACHURLPATH%/ZinvJets_MHT.png" alt="ZinvJets_MHT.png" width='300' />]] | Fig 3c: MHT distribution in the Z&rarr;&mu;&mu; + jets control region used to estimate Z&rarr;&nu;&nu; + jets. |
| [[%ATTACHURL%/WJets_MET_subtraction.pdf][<img src="%ATTACHURLPATH%/WJets_MET_subtraction.png" alt="WJets_MET_subtraction.png" width='300' />]] | Fig 3d: MET distribution in the W + jets control region after subtraction of all other backgrounds. |
| [[%ATTACHURL%/Met_0_AfterLooseControl.pdf][<img src="%ATTACHURLPATH%/Met_0_AfterLooseControl.png" alt="Met_0_AfterLooseControl.png" width='300' />]] | Fig 4a: MET in a "loose" signal region without requiring &tau;<sub>h</sub> isolation to enhance the statistics and compare the data-driven estimation of backgrounds with the observed distribution from data. |
| [[%ATTACHURL%/MHT_0_AfterLooseControl.pdf][<img src="%ATTACHURLPATH%/MHT_0_AfterLooseControl.png" alt="MHT_0_AfterLooseControl.png" width='300' />]] | Fig 4b: MHT in a "loose" signal region without requiring hadronic tau isolation to enhance the statistics and compare the data-driven estimation of backgrounds with the observed distribution from data.|
| [[%ATTACHURL%/ReconstructableMassLS_0_AfterLooseControl.pdf][<img src="%ATTACHURLPATH%/ReconstructableMassLS_0_AfterLooseControl.png" alt="ReconstructableMassLS_0_AfterLooseControl.png" width='300' />]] | Fig 4c: Invariant mass of the like-sign &tau; pair in a "loose" signal region without requiring hadronic tau isolation to enhance the statistics and compare the data-driven estimation of backgrounds with the observed distribution from data.|
| [[%ATTACHURL%/Dphi1_0_AfterLooseControl.pdf][<img src="%ATTACHURLPATH%/Dphi1_0_AfterLooseControl.png" alt="Dphi1_0_AfterLooseControl.png" width='300' />]] | Fig 4d: &#8710;&#966;(j<sub>1</sub>,MHT) in a "loose" signal region without requiring &tau;<sub>h</sub> isolation to enhance the statistics and compare the data-driven estimation of backgrounds with the observed distribution from data.|

---++[[http://cms.cern.ch/iCMS/analysisadmin/versions?analysis=SUS-11-007][Link to SUS-11-007 PAS in CADI ]]

Attachments

Topic attachments
I	Attachment	History	Action	Size	Date	Who
pdf	20110721_QCDControlDphiMhtJet2log.pdf	r1	manage	24.4 K	2011-11-11 - 21:25	SinjiniSengupta
png	20110721_QCDControlDphiMhtJet2log.png	r1	manage	48.5 K	2011-11-11 - 21:25	SinjiniSengupta
pdf	Dphi1_0_AfterLooseControl.pdf	r1	manage	16.3 K	2011-11-11 - 21:29	SinjiniSengupta
png	Dphi1_0_AfterLooseControl.png	r1	manage	29.5 K	2011-11-11 - 21:30	SinjiniSengupta
pdf	HT_0_AfterTTBarControl.pdf	r1	manage	16.3 K	2011-11-11 - 21:24	SinjiniSengupta
png	HT_0_AfterTTBarControl.png	r1	manage	30.4 K	2011-11-11 - 21:24	SinjiniSengupta
pdf	HighPt-Preselection-MET-anyLTau-ht_LM13.pdf	r1	manage	18.4 K	2011-11-11 - 20:50	SinjiniSengupta
png	HighPt-Preselection-MET-anyLTau-ht_LM13.png	r1	manage	39.4 K	2011-11-11 - 20:50	SinjiniSengupta
pdf	HighPt-Preselection-MET-anyLTau-met_LM13.pdf	r1	manage	18.0 K	2011-11-11 - 19:25	SinjiniSengupta
png	HighPt-Preselection-MET-anyLTau-met_LM13.png	r1	manage	37.1 K	2011-11-11 - 19:38	SinjiniSengupta
pdf	HighPt-Preselection-MET-anyLTau-p4_M_LM13.pdf	r1	manage	18.3 K	2011-11-11 - 20:51	SinjiniSengupta
png	HighPt-Preselection-MET-anyLTau-p4_M_LM13.png	r1	manage	43.4 K	2011-11-11 - 20:51	SinjiniSengupta
pdf	MHT_0_AfterLooseControl.pdf	r1	manage	21.1 K	2011-11-11 - 21:28	SinjiniSengupta
png	MHT_0_AfterLooseControl.png	r1	manage	40.7 K	2011-11-11 - 21:28	SinjiniSengupta
pdf	Met_0_AfterLooseControl.pdf	r1	manage	20.2 K	2011-11-11 - 21:27	SinjiniSengupta
png	Met_0_AfterLooseControl.png	r1	manage	36.2 K	2011-11-11 - 21:28	SinjiniSengupta
pdf	ReconstructableMassLS_0_AfterLooseControl.pdf	r1	manage	23.1 K	2011-11-11 - 21:29	SinjiniSengupta
png	ReconstructableMassLS_0_AfterLooseControl.png	r1	manage	47.5 K	2011-11-11 - 21:29	SinjiniSengupta
pdf	WJets_MET_subtraction.pdf	r1	manage	17.0 K	2011-11-11 - 21:26	SinjiniSengupta
png	WJets_MET_subtraction.png	r1	manage	30.2 K	2011-11-11 - 21:27	SinjiniSengupta
pdf	ZinvJets_MHT.pdf	r1	manage	16.6 K	2011-11-11 - 21:26	SinjiniSengupta
png	ZinvJets_MHT.png	r1	manage	28.3 K	2011-11-11 - 21:26	SinjiniSengupta
pdf	ht_vs_met_yields_MergedData.pdf	r1	manage	21.4 K	2011-11-11 - 21:23	SinjiniSengupta
png	ht_vs_met_yields_MergedData.png	r1	manage	83.4 K	2011-11-11 - 21:23	SinjiniSengupta

Topic revision: r3 - 2011-11-17 - AlexTapper

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