Search for new physics in events with same-sign dileptons and b-tagged jets in pp collisions at sqrt(s)=8 TeV (SUS-12-017)

Abstract

A search for new physics is performed using events with isolated same-sign leptons and at least two bottom-quark jets in the final state. Results are based on a sample of proton-proton collisions collected at a center-of-mass energy of 8 TeV with the CMS detector and corresponding to an integrated luminosity of 10.5 inverse femtobarns. No excess above the standard model background is observed. Upper limits are set on the number of events from non-standard-model sources and are used to constrain a number of new physics models. Information on acceptance and efficiencies is also provided so that the results can be used to confront an even broader class of new physics models.

Further information

This search is published as JHEP03(2013)037 (Erratum JHEP07(2013)041)
It is an update of the 7 TeV analysis SUS-11-020

Tables and Plots ( click on plot to get larger version )

Tables in the paper Abbreviated Caption
Table1.png Kinematical Requirements for jets and leptons.

Table2.png A summary of the results of this search. For each signal region (SR), we show its most distinguishing kinematic requirements, the prediction for the three background (BG) components as well as the total, the event yield, and the observed 95% confidence level upper limit on the number of non-SM events ($N_{UL}$) calculated under three different assumptions for the event efficiency uncertainty. Note that the count of the number of jets on the first line of the table includes both tagged and untagged jets.

Figures in the paper Abbreviated Caption
HtVsMET_baseline.png Distribution of MET vs. HT for the 13 events in SR0; ee events: circles; eμ events: squares; μμ events: triangles
Ht.png Projection of the scatter plot above onto the Ht axis.
Met.png Projection of the scatter plot above onto the Met axis. (This is the correct version of the plot from the erratum).
| ModelA1.png ModelA2.png
ModelB1.png ModelB2.png | Diagrams for the four SUSY models considered in this analysis. |
T1tttt_lipstick.png Exclusion (95 % C.L.) in the m(χ0 ) − m( g) plane for model A1 (gluino decay via virtual stop quarks). The band represents the theoretical uncertainty on the gluino pair production cross-section. The equivalent plot on 7 TeV data can be found here.
B1_lipstick.png Exclusion (95 % C.L.) in the m(χ− ) − m(b1 ) plane for model B1 (sbottom pair production). The equivalent plot on 7 TeV data can be found here.
GlStop50_lipstick.png GlStop250_lipstick.png Exclusion (95 % C.L.) in the m(t1 ) − m( g) plane for model A2 (gluino decay to on-shell top squarks) for different choices of the LSP mass. The equivalent plot on 7 TeV data can be found here.
B2_150_lipstick.png B2_300_lipstick.png Exclusion (95% C.L.) in the m(b1 ) − m( g) plane for model B2 for different choices of the chargino mass. The equivalent plot on 7 TeV data can be found here.
btagEfficiency_t1ttt.pngleptonEfficiency_lm9.png Information for model testing. Btag efficiency as a function of jet PT and lepton identification and isolation efficiency as a function of PT. The HT and MET turn on curves are the same as for the 7 TeV analysis and can be found here and here.
Additional Figures Abbreviated Caption
fig1d.png Additional Figure: distribution of leading lepton pt of observed events and estimated backgrounds
fig1e.png Additional Figure: distribution of the trailing lepton pt of observed events and estimated backgrounds
fig1f.png Additional Figure: distribution of number of jets of observed events and estimated backgrounds
fig1g.png Additional Figure: distribution of the number of b-tagged jets of observed events and estimated backgrounds
fig6d.png Additional Figure : exclusion (95 % C.L.) in the m(t1 ) − m( g) plane for model A1 (gluino decay via virtual stop quarks), alternate presentation (observed limit only)
fig6e.png Additional Figure : exclusion (95 % C.L.) in the m(t1 ) − m( g) plane for model A2 (gluino decay to on-shell top squarks), alternate presentation (observed limit only)
fig8d.png Additional Figure : exclusion (95 % C.L.) in the m(χ− ) − m(b1 ) plane for model B1 (sbottom pair production), alternate presentation (observed limit only)
fig8e.png Additional Figure : exclusion (95% C.L.) in the m(b1 ) − m( g) plane for model B2, alternate presentation (observed limit only)
fig9a.png Additional Figure : Method 1 electron Tight-to-Loose ratio projected in lepton pT for different requirements on the PT of the away jet
fig9b.png Additional Figure : Method 1 electron Tight-to-Loose ratio projected in lepton eta for different requirements on the PT of the away jet
fig9c.png Additional Figure : Method 1 electron Tight-to-Loose ratio binned in number of vertices for different requirements on the PT of the away jet
fig3a.png Additional Figure : Method 1 muon Tight-to-Loose ratio projected in lepton pT for different requirements on the PT of the away jet
fig3b.png Additional Figure : Method 1 muon Tight-to-Loose ratio projected in lepton eta for different requirements on the PT of the away jet
fig3c.png Additional Figure : Method 1 muon Tight-to-Loose ratio binned in number of vertices for different requirements on the PT of the away jet

Combined_Bar.png Additional Figure: Observed events and predicted background for each channel in a control region, defined with HT>200 GeV, MET> 200 GeV and nBjet>=0.
HT_control.png Additional Figure: HT distribution of the observed events and estimated backgrounds in the control region.
MET_control.png Additional Figure: MET distribution of the observed events and estimated backgrounds in the control region.
nBjets.png Additional Figure: distribution of the number of b-tagged jets of observed events and estimated backgrounds in the control region.
LeadingLeptonPT.png Additional Figure: pT distribution of the leading lepton for observed data and predicted background for the control region.
RelIso_Mu.png Additional Figure: Relative isolation distribution as measured in the QCD control region for Method 2 used to estimate the background from jets mis-identified as muons.
RelIso_El.png Additional Figure: Relative isolation distribution as measured in the QCD control region for Method 2 used to estimate the background from jets mis-identified as electrons.

fig4a.png Additional Figure: Signal region giving the best expected limit for Model A1.
fig4b.png Additional Figure: Signal region giving the best expected limit for Model A2 with a LSP mass of 50 GeV.
fig4c.png Additional Figure: Signal region giving the best expected limit for Model A2 with a LSP mass of 250 GeV.
fig4d.png Additional Figure: Signal region giving the best expected limit for Model B2 with a chargino mass of 150 GeV and a LSP mass of 50 GeV.
fig4e.png Additional Figure: Signal region giving the best expected limit for Model B2 with a chargino mass of 300 GeV and a LSP mass of 50 GeV.
fig4f.png Additional Figure: Signal region giving the best expected limit for Model B1.
fig10a.png Additional Figure: Acceptance for Model A1.
fig10b.png Additional Figure: Acceptance for Model A2 with a LSP mass of 50 GeV.
fig10c.png Additional Figure: Acceptance for Model A2 with a LSP mass of 250 GeV.
fig10d.png Additional Figure: Acceptance for Model B2 with a chargino mass of 150 GeV and a LSP mass of 50 GeV.
fig10e.png Additional Figure: Acceptance for Model B2 with a chargino mass of 300 GeV and a LSP mass of 50 GeV.
fig10f.png Additional Figure: Acceptance for Model B1.

-- ClaudioCampagnari - 09-Mar-2013

Topic attachments
I Attachment History Action Size Date Who Comment
PDFpdf B1_lipstick.pdf r1 manage 14.0 K 2013-03-09 - 02:13 ClaudioCampagnari Model B1 limits
PNGpng B1_lipstick.png r1 manage 31.7 K 2013-03-09 - 02:13 ClaudioCampagnari Model B1 limits
PDFpdf B2_150_lipstick.pdf r1 manage 14.8 K 2013-03-09 - 02:14 ClaudioCampagnari Model B2 limits
PNGpng B2_150_lipstick.png r1 manage 36.7 K 2013-03-09 - 02:14 ClaudioCampagnari Model B2 limits
PDFpdf B2_300_lipstick.pdf r1 manage 14.8 K 2013-03-09 - 02:14 ClaudioCampagnari Model B2 limits
PNGpng B2_300_lipstick.png r1 manage 35.2 K 2013-03-09 - 02:14 ClaudioCampagnari Model B2 limits
PDFpdf Combined_Bar.pdf r2 r1 manage 36.8 K 2013-03-09 - 08:06 ClaudioCampagnari  
PNGpng Combined_Bar.png r2 r1 manage 42.4 K 2013-03-09 - 08:06 ClaudioCampagnari  
PDFpdf GlStop250_lipstick.pdf r1 manage 14.6 K 2013-03-09 - 02:15 ClaudioCampagnari Model A2 limits
PNGpng GlStop250_lipstick.png r1 manage 30.7 K 2013-03-09 - 02:15 ClaudioCampagnari Model A2 limits
PDFpdf GlStop50_lipstick.pdf r1 manage 14.6 K 2013-03-09 - 02:15 ClaudioCampagnari Model A2 limits
PNGpng GlStop50_lipstick.png r1 manage 31.7 K 2013-03-09 - 02:15 ClaudioCampagnari Model A2 limits
PDFpdf HT_control.pdf r2 r1 manage 39.9 K 2013-03-09 - 08:16 ClaudioCampagnari  
PNGpng HT_control.png r2 r1 manage 47.2 K 2013-03-09 - 08:16 ClaudioCampagnari  
PDFpdf Ht.pdf r1 manage 15.9 K 2013-03-09 - 01:42 ClaudioCampagnari Ht baseline
PNGpng Ht.png r1 manage 38.4 K 2013-03-09 - 01:42 ClaudioCampagnari Ht baseline
PDFpdf HtVsMET_baseline.pdf r1 manage 15.3 K 2013-03-09 - 01:39 ClaudioCampagnari HT vs MET baseline
PNGpng HtVsMET_baseline.png r1 manage 34.5 K 2013-03-09 - 01:39 ClaudioCampagnari HT vs MET baseline
PDFpdf LeadingLeptonPT.pdf r2 r1 manage 40.0 K 2013-03-09 - 08:17 ClaudioCampagnari  
PNGpng LeadingLeptonPT.png r2 r1 manage 52.5 K 2013-03-09 - 08:17 ClaudioCampagnari  
PDFpdf MET_control.pdf r2 r1 manage 37.9 K 2013-03-09 - 08:16 ClaudioCampagnari  
PNGpng MET_control.png r2 r1 manage 42.9 K 2013-03-09 - 08:16 ClaudioCampagnari  
PDFpdf Met.pdf r2 r1 manage 20.1 K 2013-07-25 - 03:07 ClaudioCampagnari  
PNGpng Met.png r2 r1 manage 172.1 K 2013-07-25 - 03:07 ClaudioCampagnari  
PDFpdf ModelA1.pdf r1 manage 102.0 K 2013-03-09 - 01:51 ClaudioCampagnari  
PNGpng ModelA1.png r1 manage 15.7 K 2013-03-09 - 01:51 ClaudioCampagnari  
PDFpdf ModelA2.pdf r1 manage 102.8 K 2013-03-09 - 01:51 ClaudioCampagnari  
PNGpng ModelA2.png r1 manage 16.5 K 2013-03-09 - 01:51 ClaudioCampagnari  
PDFpdf ModelB1.pdf r1 manage 114.3 K 2013-03-09 - 01:51 ClaudioCampagnari  
PNGpng ModelB1.png r1 manage 17.0 K 2013-03-09 - 01:51 ClaudioCampagnari  
PDFpdf ModelB2.pdf r1 manage 121.3 K 2013-03-09 - 01:51 ClaudioCampagnari  
PNGpng ModelB2.png r1 manage 21.2 K 2013-03-09 - 01:51 ClaudioCampagnari  
PDFpdf RelIso_El.pdf r2 r1 manage 43.9 K 2013-03-09 - 08:17 ClaudioCampagnari  
PNGpng RelIso_El.png r2 r1 manage 12.7 K 2013-03-09 - 08:17 ClaudioCampagnari  
PDFpdf RelIso_Mu.pdf r2 r1 manage 40.9 K 2013-03-09 - 08:27 ClaudioCampagnari  
PNGpng RelIso_Mu.png r2 r1 manage 12.0 K 2013-03-09 - 08:27 ClaudioCampagnari  
PDFpdf T1tttt_lipstick.pdf r1 manage 14.5 K 2013-03-09 - 02:05 ClaudioCampagnari Model A1 limits
PNGpng T1tttt_lipstick.png r1 manage 33.2 K 2013-03-09 - 02:05 ClaudioCampagnari Model A1 limits
PNGpng Table1.png r2 r1 manage 42.6 K 2013-03-09 - 01:34 ClaudioCampagnari Table 1
PNGpng Table2.png r2 r1 manage 21.0 K 2013-03-17 - 20:21 ClaudioCampagnari Table 2
PDFpdf btagEfficiency_t1tttt.pdf r1 manage 15.3 K 2013-03-09 - 02:33 ClaudioCampagnari btag efficiency
PNGpng btagEfficiency_t1tttt.png r1 manage 23.5 K 2013-03-09 - 02:33 ClaudioCampagnari btag efficiency
PDFpdf fig10a.pdf r2 r1 manage 40.6 K 2013-03-09 - 08:14 ClaudioCampagnari  
PNGpng fig10a.png r3 r2 r1 manage 31.3 K 2013-03-09 - 08:14 ClaudioCampagnari  
PDFpdf fig10b.pdf r2 r1 manage 39.6 K 2013-03-09 - 08:14 ClaudioCampagnari  
PNGpng fig10b.png r3 r2 r1 manage 29.7 K 2013-03-09 - 08:14 ClaudioCampagnari  
PDFpdf fig10c.pdf r2 r1 manage 38.7 K 2013-03-09 - 08:14 ClaudioCampagnari  
PNGpng fig10c.png r3 r2 r1 manage 28.0 K 2013-03-09 - 08:14 ClaudioCampagnari  
PDFpdf fig10d.pdf r2 r1 manage 38.9 K 2013-03-09 - 08:16 ClaudioCampagnari  
PNGpng fig10d.png r3 r2 r1 manage 28.4 K 2013-03-09 - 08:16 ClaudioCampagnari  
PDFpdf fig10e.pdf r2 r1 manage 39.4 K 2013-03-09 - 08:16 ClaudioCampagnari  
PNGpng fig10e.png r3 r2 r1 manage 30.1 K 2013-03-09 - 08:16 ClaudioCampagnari  
PDFpdf fig10f.pdf r2 r1 manage 38.3 K 2013-03-09 - 08:16 ClaudioCampagnari  
PNGpng fig10f.png r3 r2 r1 manage 27.1 K 2013-03-09 - 08:16 ClaudioCampagnari  
PDFpdf fig1d.pdf r2 r1 manage 40.4 K 2013-03-09 - 08:06 ClaudioCampagnari  
PNGpng fig1d.png r2 r1 manage 46.1 K 2013-03-09 - 08:06 ClaudioCampagnari  
PDFpdf fig1e.pdf r2 r1 manage 39.8 K 2013-03-10 - 00:56 ClaudioCampagnari  
PNGpng fig1e.png r2 r1 manage 34.6 K 2013-03-09 - 08:06 ClaudioCampagnari  
PDFpdf fig1f.pdf r2 r1 manage 39.6 K 2013-03-09 - 08:22 ClaudioCampagnari  
PNGpng fig1f.png r2 r1 manage 35.0 K 2013-03-09 - 08:22 ClaudioCampagnari  
PDFpdf fig1g.pdf r2 r1 manage 39.0 K 2013-03-09 - 08:06 ClaudioCampagnari  
PNGpng fig1g.png r2 r1 manage 32.6 K 2013-03-09 - 08:06 ClaudioCampagnari  
PDFpdf fig3a.pdf r2 r1 manage 36.5 K 2013-03-09 - 08:09 ClaudioCampagnari  
PNGpng fig3a.png r3 r2 r1 manage 28.2 K 2013-03-09 - 08:09 ClaudioCampagnari  
PDFpdf fig3b.pdf r2 r1 manage 36.3 K 2013-03-09 - 08:09 ClaudioCampagnari  
PNGpng fig3b.png r3 r2 r1 manage 27.5 K 2013-03-09 - 08:09 ClaudioCampagnari  
PDFpdf fig3c.pdf r2 r1 manage 36.9 K 2013-03-09 - 08:09 ClaudioCampagnari  
PNGpng fig3c.png r3 r2 r1 manage 30.3 K 2013-03-09 - 08:09 ClaudioCampagnari  
PDFpdf fig4a.pdf r3 r2 r1 manage 37.8 K 2013-03-17 - 19:30 ClaudioCampagnari  
PNGpng fig4a.png r4 r3 r2 r1 manage 33.9 K 2013-03-17 - 19:31 ClaudioCampagnari  
PDFpdf fig4b.pdf r2 r1 manage 36.2 K 2013-03-09 - 08:08 ClaudioCampagnari  
PNGpng fig4b.png r3 r2 r1 manage 29.0 K 2013-03-09 - 08:08 ClaudioCampagnari  
PDFpdf fig4c.pdf r2 r1 manage 35.8 K 2013-03-09 - 08:10 ClaudioCampagnari  
PNGpng fig4c.png r3 r2 r1 manage 27.2 K 2013-03-09 - 08:10 ClaudioCampagnari  
PDFpdf fig4d.pdf r2 r1 manage 36.0 K 2013-03-09 - 08:25 ClaudioCampagnari  
PNGpng fig4d.png r3 r2 r1 manage 26.9 K 2013-03-09 - 08:25 ClaudioCampagnari  
PDFpdf fig4e.pdf r2 r1 manage 36.5 K 2013-03-09 - 08:10 ClaudioCampagnari  
PNGpng fig4e.png r3 r2 r1 manage 27.5 K 2013-03-09 - 08:10 ClaudioCampagnari  
PDFpdf fig4f.pdf r2 r1 manage 35.9 K 2013-03-09 - 08:10 ClaudioCampagnari  
PNGpng fig4f.png r3 r2 r1 manage 28.2 K 2013-03-09 - 08:10 ClaudioCampagnari  
PDFpdf fig6d.pdf r2 r1 manage 35.9 K 2013-03-09 - 08:10 ClaudioCampagnari  
PNGpng fig6d.png r3 r2 r1 manage 38.8 K 2013-03-09 - 08:10 ClaudioCampagnari  
PDFpdf fig6e.pdf r2 r1 manage 36.1 K 2013-03-09 - 08:23 ClaudioCampagnari  
PNGpng fig6e.png r3 r2 r1 manage 32.4 K 2013-03-09 - 08:23 ClaudioCampagnari  
PDFpdf fig8d.pdf r2 r1 manage 35.7 K 2013-03-09 - 08:12 ClaudioCampagnari  
PNGpng fig8d.png r3 r2 r1 manage 34.9 K 2013-03-09 - 08:12 ClaudioCampagnari  
PDFpdf fig8e.pdf r2 r1 manage 37.0 K 2013-03-09 - 08:12 ClaudioCampagnari  
PNGpng fig8e.png r3 r2 r1 manage 37.1 K 2013-03-09 - 08:12 ClaudioCampagnari  
PDFpdf fig9a.pdf r2 r1 manage 36.7 K 2013-03-09 - 08:12 ClaudioCampagnari  
PNGpng fig9a.png r3 r2 r1 manage 27.0 K 2013-03-09 - 08:12 ClaudioCampagnari  
PDFpdf fig9b.pdf r2 r1 manage 36.1 K 2013-03-09 - 08:25 ClaudioCampagnari  
PNGpng fig9b.png r3 r2 r1 manage 25.9 K 2013-03-09 - 08:25 ClaudioCampagnari  
PDFpdf fig9c.pdf r2 r1 manage 36.7 K 2013-03-09 - 08:14 ClaudioCampagnari  
PNGpng fig9c.png r3 r2 r1 manage 28.8 K 2013-03-09 - 08:14 ClaudioCampagnari  
PDFpdf leptonEfficiency_t1tttt.pdf r1 manage 16.1 K 2013-03-09 - 02:34 ClaudioCampagnari lepton efficiency
PNGpng leptonEfficiency_t1tttt.png r1 manage 25.6 K 2013-03-09 - 02:34 ClaudioCampagnari lepton efficiency
PDFpdf nBjets.pdf r2 r1 manage 37.8 K 2013-03-09 - 08:17 ClaudioCampagnari  
PNGpng nBjets.png r2 r1 manage 45.9 K 2013-03-09 - 08:17 ClaudioCampagnari  
Edit | Attach | Watch | Print version | History: r6 < r5 < r4 < r3 < r2 | Backlinks | Raw View | WYSIWYG | More topic actions
Topic revision: r6 - 2013-07-25 - ClaudioCampagnari
 
    • Cern Search Icon Cern Search
    • TWiki Search Icon TWiki Search
    • Google Search Icon Google Search

    CMSPublic All webs login

This site is powered by the TWiki collaboration platform Powered by PerlCopyright & 2008-2019 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding TWiki? Send feedback