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| physics:crosssections [2018/08/27 09:50] – [Cross sections] iwn | physics:crosssections [2018/08/27 14:07] (current) – [Cross sections at CMS] iwn |
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| ====== Cross sections at CMS ====== | ====== Cross sections at CMS ====== |
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| This page aims to collect links for cross sections that are relevant for CMS. More on luminosity can be found [[physics:lumi|here]], and more on pdfs can be found [[physics:pdf|here]] instead. | This page aims to collect information about **cross sections** that are relevant for CMS. More on **luminosity** can be found [[physics:lumi|here]], and more on **PDFs** can be found [[physics:pdfs|here]] instead. |
| ===== CMS samples ===== | ===== CMS samples ===== |
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| * [[https://twiki.cern.ch/twiki/bin/viewauth/CMS/StandardModelCrossSectionsat13TeV|13 TeV summary (CMS TWiki)]] | * [[https://twiki.cern.ch/twiki/bin/viewauth/CMS/StandardModelCrossSectionsat13TeV|13 TeV summary (CMS TWiki)]] |
| * [[https://twiki.cern.ch/twiki/bin/view/LHCPhysics/TtbarNNLO|top quark pair production (NNLO+NNLL, CMS TWiki)]] with [[http://pdg.lbl.gov/2017/tables/rpp2017-sum-gauge-higgs-bosons.pdf|W boson branching fractions]], such that:<code> | * [[https://twiki.cern.ch/twiki/bin/view/LHCPhysics/TtbarNNLO|top quark pair production (NNLO+NNLL, CMS TWiki)]] with [[http://pdg.lbl.gov/2017/tables/rpp2017-sum-gauge-higgs-bosons.pdf|W boson branching fractions (PDG 2017)]], such that:<code> |
| TTTo2L2Nu: BR(dilep) = 10.3% 831.76 pb * (3*0.1086)^2 = 88.2877 pb | TTTo2L2Nu: BR(dilep) = 10.6% 831.76 pb * (3*0.1086)^2 = 88.2877 pb |
| TTToHadronic: BR(had) = 43.5% => 831.76 pb * (2*3*0.1086*0.6741) = 365.3452 pb | TTToHadronic: BR(had) = 45.4% => 831.76 pb * (0.6741)^2 = 377.9607 pb |
| TTToSemiLeptonic: BR(semilep) = 46.2% 831.76 pb * (0.6741)^2 = 377.9607 pb | TTToSemiLeptonic: BR(semilep) = 43.9% 831.76 pb * (2*3*0.1086*0.6741) = 365.3452 pb |
| </code> | </code> |
| * [[https://twiki.cern.ch/twiki/bin/view/LHCPhysics/SingleTopRefXsec|single top production (5FS NLO, CMS TWiki)]] | * [[https://twiki.cern.ch/twiki/bin/view/LHCPhysics/SingleTopRefXsec|single top production (5FS NLO, CMS TWiki)]] |
