2017:groups:np:stxsveeft
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2017:groups:np:stxsveeft [2017/06/22 01:23] alexandra.carvalho |
2017:groups:np:stxsveeft [2017/10/24 10:30] (current) jorge.de_blas |
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| ====== Simplified Template Cross Sections (STXS) and EFT constraints ====== | ====== Simplified Template Cross Sections (STXS) and EFT constraints ====== | ||
| - | People interested (add your name): Francesco Riva, Ken Mimasu, Fabio Maltoni, Benjamin Fuks, Kristin Lohwasser, Jorge de Blas, Pasquale Musella, Alexandra Carvalho | + | People interested (add your name): Francesco Riva, Ken Mimasu, Fabio Maltoni, Benjamin Fuks, Kristin Lohwasser, Jorge de Blas, Pasquale Musella, Alexandra Carvalho, Caterina Vernieri, Benjamin Freund, Adam Falkowski |
| Perform a case study of the constraining power on EFT Wilson coefficients from Higgs data through STXS. | Perform a case study of the constraining power on EFT Wilson coefficients from Higgs data through STXS. | ||
| Compare the sensitivity of performing a fit to the Wilson coefficients of interest via the STXS with a direct fit from LHC data and quantify any loss of information incurred. | Compare the sensitivity of performing a fit to the Wilson coefficients of interest via the STXS with a direct fit from LHC data and quantify any loss of information incurred. | ||
| - | Processes of interest: | + | [[https://github.com/musella/LHStxsVsEft|Github repository]] |
| + | |||
| + | === Processes of interest: === | ||
| * Associated production (VH->bb) | * Associated production (VH->bb) | ||
| * Vector Boson Fusion (VBF->gamma gamma, tau tau, ...) | * Vector Boson Fusion (VBF->gamma gamma, tau tau, ...) | ||
| - | Available UFO models: | + | === Workflow === |
| + | |||
| + | {{:2017:groups:higgs:stxeftworkflow.png?400|{{:2017:groups:higgs:stxeftworkflow.png?400|}} | ||
| + | |||
| + | === Tasks === | ||
| + | - Generate signal and background processes (Ken, Jorge) | ||
| + | - Modify madanalysis to smear jets and output csv file (Benjamin) | ||
| + | - Define selection cuts (Caterina and Kristin) | ||
| + | - Develop RooFit-based stat analysis (Kristin) | ||
| + | - Prepare skeleton for BDT training (Pasquale) | ||
| + | |||
| + | === Samples to generate === | ||
| + | * Baseline: | ||
| + | * 500k events / process | ||
| + | * 4-5 EFT points (start with 1-2) | ||
| + | * VH(bb): SM Z(ll)H, EFT Z(ll)H, SM Z(ll)bb (100<mbb<150) | ||
| + | * VBF(tau tau): SM VBF, EFT VBF, SM Z(tau tau) | ||
| + | * EFT operators to probe: OHW (SILH), more? | ||
| + | |||
| + | === Selection cuts and smearing === | ||
| + | |||
| + | == ZH->bbar == | ||
| + | |||
| + | References | ||
| + | https://cds.cern.ch/record/2206813/files/ATLAS-CONF-2016-091.pdf?version=1 | ||
| + | https://journals.aps.org/prd/abstract/10.1103/PhysRevD.89.012003 | ||
| + | |||
| + | Selections: | ||
| + | * leptons > 25 GeV ,|eta|<2.5 | ||
| + | * bjets, |eta| < 2.5, pT>20 | ||
| + | * Z mass window --> 75 - 105 | ||
| + | * ptV>0 GeV | ||
| + | |||
| + | |||
| + | == VBS Htautau == | ||
| + | |||
| + | References: | ||
| + | https://cds.cern.ch/record/2264522/files/HIG-16-043-pas.pdf | ||
| + | |||
| + | Selections: | ||
| + | * Exactly 2 jets > 30 gev | ||
| + | * mjj>300 GeV | ||
| + | * detajj>2.5 | ||
| + | * [((vectorial sum pT taus+met > 50 GeV (lep) / > 100 GeV (had) )) - Note: would probably leave it out?] | ||
| + | * pT (tau) >30 GeV coming from | ||
| + | * tau_had: >50 / >40 | ||
| + | * lep-had: >20 (26e) / > 30 (had) | ||
| + | * lep-lep: 13(e)/24(m) / 24(e) / 15(m) | ||
| + | |||
| + | |||
| + | == Smearings == | ||
| + | * CMS particle flow Jet resolution -> https://arxiv.org/pdf/1706.04965.pdf | ||
| + | * ATLAS resolution on taus: http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/PERF-2013-06 | ||
| + | |||
| + | |||
| + | === Available UFO models: === | ||
| * HEL at LO (extensive set of SILH basis operators) [[http://feynrules.irmp.ucl.ac.be/wiki/HEL|(link)]] | * HEL at LO (extensive set of SILH basis operators) [[http://feynrules.irmp.ucl.ac.be/wiki/HEL|(link)]] | ||
| * HEL at NLO (small subset of SILH basis operators relevant for EW production) [[http://feynrules.irmp.ucl.ac.be/wiki/HELatNLO|(link)]] | * HEL at NLO (small subset of SILH basis operators relevant for EW production) [[http://feynrules.irmp.ucl.ac.be/wiki/HELatNLO|(link)]] | ||
| - | References: | + | === References: === |
| * Session 1 STXS page. [[https://phystev.cnrs.fr/wiki/2017:groups:higgs:stxs| (link) ]] | * Session 1 STXS page. [[https://phystev.cnrs.fr/wiki/2017:groups:higgs:stxs| (link) ]] | ||
| * Rivet tool implementing stage 1 and 0 selections maintained by LHCHXSWG [[https://svnweb.cern.ch/cern/wsvn/lhchiggsxs/repository/TemplateXS/| (link)]] | * Rivet tool implementing stage 1 and 0 selections maintained by LHCHXSWG [[https://svnweb.cern.ch/cern/wsvn/lhchiggsxs/repository/TemplateXS/| (link)]] | ||
| + | |||
| + | |||
2017/groups/np/stxsveeft.1498087399.txt.gz · Last modified: 2017/06/22 01:23 by alexandra.carvalho
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