2015:groups:tools:backgrounds
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2015:groups:tools:backgrounds [2015/06/04 00:57] paolo.francavilla [WW versus ttbar] |
2015:groups:tools:backgrounds [2015/07/14 08:31] philippe.gras Added instructions for CERN account |
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| ====== A quick study on the impact of irreducible-background subtraction ====== | ====== A quick study on the impact of irreducible-background subtraction ====== | ||
| + | //If you are interested in contributing please subscribe to the [[https://e-groups.cern.ch/e-groups/EgroupsSearch.do?searchValue=houches-2015-topics-tools-bgnd-subtraction|mailing list]]. You will be asked to log in with your CERN account. If you don't have a CERN account, please fill [[https://account.cern.ch/account/Externals/RegisterAccount.aspx|this form]] to create a lightweight account.// | ||
| - | + | Jon Butterworth, Vitaliano Ciulli, Paolo Francavilla, Frank Krauss, Carlo Pandini, Luca Parrozzi, ... | |
| - | Jon Butterworth, Paolo Francavilla, Frank Krauss, Carlo Pandini, Luca Parrozzi, ... | + | |
| github repository: https://github.com/perrozzi/leshouches_bkgsub | github repository: https://github.com/perrozzi/leshouches_bkgsub | ||
| Line 40: | Line 40: | ||
| Objects Definition: | Objects Definition: | ||
| - | * electrons and muons: pT > 25 GeV; |eta| < 2.4 | + | * electrons and muons: pT > 25 GeV; |eta| < 2.4 |
| - | * jets: pT > 25 GeV; | eta | <4.5 | + | * jets: pT > 25 GeV; | eta | <4.5 |
| - | * bjets: jets with | eta |< 4.5 (?) and b-labelled | + | * bjets: jets with | eta |< 2.5 and b-labelled |
| NOTE 1: in the ATLAS WW analysis, the jets are build from all the particles, excluding muons and neutrinos. | NOTE 1: in the ATLAS WW analysis, the jets are build from all the particles, excluding muons and neutrinos. | ||
| If we adopt this definition, we will need to run an Overlap Removal between electrons and jets, to avoid counting jets which are in fact electrons. | If we adopt this definition, we will need to run an Overlap Removal between electrons and jets, to avoid counting jets which are in fact electrons. | ||
| NOTE 2: The ATLAS WW analysis is vetoing events if (among the other selections) : | NOTE 2: The ATLAS WW analysis is vetoing events if (among the other selections) : | ||
| - | * there are jet (and b-jet), or | + | * there are jet (and b-jet), or |
| - | * there are extra leptons. | + | * there are extra leptons. |
| - | If we want to extend to events with b-jets, we should consider how to handle the semileptonic b-decays in jets ()to avoid to veto the event because of the leptons in jets. | + | If we want to extend to events with b-jets, we should consider how to handle the semi-leptonic b-decays in jets ()to avoid to veto the event because of the leptons in jets. |
| - | Event Selection: | + | Event Selection: |
| - | * MET>30, 1 muon, 1 electron, 2+ b jets | + | fill()CutFlow |
| - | ->fill()CutFlow | + | * 2 opposite charged leptons |
| - | ->fill(electron) pt, eta | + | * 1 muon, 1 electron |
| - | ->fill(muon) pt, eta | + | fill(CutFlow) |
| - | ->fill(b-jet1) pt, eta | + | fill(MET_rel) |
| - | ->fill(b-jet2) pt, eta | + | * MET_rel>25 GeV, |
| - | ->fill(b-jets) #b-jets | + | fill(CutFlow) |
| - | ->fill(other jets), pt, eta, #jets | + | fill(mll) |
| - | * 100<mT(MET,e,mu)/GeV<150 | + | * mll>10 GeV, |
| - | ->fill()CutFlow | + | fill(CutFlow) |
| - | ->fill(electron) pt, eta | + | fill(b-jets, jets) #b-jets VS #jets |
| - | ->fill(muon) pt, eta | + | fill(jets), pt, eta |
| - | ->fill(b-jet1) pt, eta | + | * 2+ bjets |
| - | ->fill(b-jet2) pt, eta | + | fill(CutFlow) |
| - | ->fill(b-jets) #b-jets | + | fill(bjet 1) pt, eta |
| - | ->fill(other jets), pt, eta, #jets | + | fill(bjet 2) pt, eta |
| - | * 100<m(bb)/GeV<150 | + | fill(electron) pt, eta |
| - | ->fill()CutFlow | + | fill(muon) pt, eta |
| - | ->fill(electron) pt, eta | + | fill(MET) |
| - | ->fill(muon) pt, eta | + | fill(mT(MET,e,mu)) |
| - | ->fill(b-jet1) pt, eta | + | * 100<mT(MET,e,mu)/GeV<150 |
| - | ->fill(b-jet2) pt, eta | + | fill(CutFlow) |
| - | ->fill(b-jets) #b-jets | + | fill(electron) pt, eta |
| - | ->fill(other jets), pt, eta, #jets | + | fill(muon) pt, eta |
| + | fill(b-jet1) pt, eta | ||
| + | fill(b-jet2) pt, eta | ||
| + | fill(m(bb)) | ||
| + | * 100<m(bb)/GeV<150 | ||
| + | fill(CutFlow) | ||
| + | fill(b-jets, jets) #b-jets VS #jets | ||
| + | fill(jets), pt, eta | ||
| Line 87: | Line 94: | ||
| 4. Consider ttbar as signal. Look at distortion in b-lepton mass from SR/C/Sum/WWbb-non-top contributions. | 4. Consider ttbar as signal. Look at distortion in b-lepton mass from SR/C/Sum/WWbb-non-top contributions. | ||
| - | |||
| ==== Wb versus t ==== | ==== Wb versus t ==== | ||
2015/groups/tools/backgrounds.txt · Last modified: 2015/07/14 08:31 by philippe.gras
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