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physics:crosssections [2018/08/17 23:45] – [CMS samples] iwn | physics:crosssections [2018/08/27 09:50] – [Cross sections] iwn |
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====== Cross sections ====== | ====== Cross sections ====== |
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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. |
===== CMS samples ===== | ===== CMS samples ===== |
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* [[https://cms-gen-dev.cern.ch/xsdb|cross section database (XSDB) for CMS samples]], e.g. for [[https://cms-gen-dev.cern.ch/xsdb/?columns=67108863¤tPage=0&pageSize=10&searchQuery=DAS%3DDYJetsToLL_M-.%2A50_Tune|Drell-Yan]] | * [[https://cms-gen-dev.cern.ch/xsdb|cross section database (XSDB) for CMS samples]], e.g. for [[https://cms-gen-dev.cern.ch/xsdb/?columns=67108863¤tPage=0&pageSize=10&searchQuery=DAS%3DDYJetsToLL_M-.%2A50_Tune|Drell-Yan]] |
* [[https://twiki.cern.ch/twiki/bin/view/CMS/SummaryTable1G25ns|summary table for 2016 samples]] | * [[https://twiki.cern.ch/twiki/bin/view/CMS/SummaryTable1G25ns|summary table for 2016 samples]] |
* [[https://twiki.cern.ch/twiki/bin/view/CMS/TauIDMeasurementsHelp#2017_measurements_MC2017_v2_samp|summary table for 2017 samples]], [[https://ineuteli.web.cern.ch/ineuteli/crosssections/2017/|cross check]] | * [[https://twiki.cern.ch/twiki/bin/view/CMS/TauIDMeasurementsHelp#2017_measurements_MC2017_v2_samp|summary table for 2017 samples]], [[https://ineuteli.web.cern.ch/ineuteli/crosssections/2017/|cross-check]] |
* calculate for samples with [[https://twiki.cern.ch/twiki/bin/view/CMS/HowToGenXSecAnalyzer| GenXSecAnalyzer]], see [[physics:crosssections:GenXSecAnalyzer|this example of useage]] | * calculate for samples with [[https://twiki.cern.ch/twiki/bin/view/CMS/HowToGenXSecAnalyzer| GenXSecAnalyzer]] (CMSSW), see [[physics:crosssections:GenXSecAnalyzer|this example of useage]] |
===== Predicted from theory ===== | ===== Predicted from theory ===== |
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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]], such that:<code> |
TTTo2L2Nu: BR(dilep) = 10.3% 831.76 pb * (3*0.1086)^2 = 88.2877 pb | TTTo2L2Nu: BR(dilep) = 10.3% 831.76 pb * (3*0.1086)^2 = 88.2877 pb |
TTToHadronic: BR(dilep) = 43.5% => 831.76 pb * (2*3*0.1086*0.6741) = 365.3452 pb | TTToHadronic: BR(had) = 43.5% => 831.76 pb * (2*3*0.1086*0.6741) = 365.3452 pb |
TTToSemiLeptonic: BR(dilep) = 46.2% 831.76 pb * (0.6741)^2 = 377.9607 pb | TTToSemiLeptonic: BR(semilep) = 46.2% 831.76 pb * (0.6741)^2 = 377.9607 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)]] |
</WRAP> | </WRAP> |
</WRAP> | </WRAP> |
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| ===== Measured ===== |
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| * [[https://twiki.cern.ch/twiki/bin/view/CMSPublic/PhysicsResultsCombined|summary of measurements at CMS]] |
| * top pair production measurements at CMS: [[https://twiki.cern.ch/twiki/bin/view/CMSPublic/PhysicsResultsTOPSummaryFigures|summary]] |
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{{ cross_sections_summary_-_cms.png }} | {{ cross_sections_summary_-_cms.png }} |
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Summaries of cross sections by James Stirling are found here: | Summaries of cross sections by James Stirling are found here: |
http://www.hep.ph.ic.ac.uk/~wstirlin/plots/plots.html | http://www.hep.ph.ic.ac.uk/~wstirlin/plots/plots.html |