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--- 2017:groups:np:stxsveeft [2017/06/22 11:27]
caterina.vernieri
+++ 2017:groups:np:stxsveeft [2017/10/24 10:30] (current)
jorge.de_blas
@@ Line 1: / Line 1: @@
 ====== 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, Caterina Vernieri
+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.
 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)
   * Vector Boson Fusion (VBF->gamma gamma, tau tau, ...)
-Available UFO models:
+=== Workflow ===
-  * 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)]]
-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
+=== Samples to generate ===
-   * VH(bb): SM VH, EFT VH, SM Vbb
+   * 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: TBD
+   * 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 NLO (small subset of SILH basis operators relevant for EW production) [[http://feynrules.irmp.ucl.ac.be/wiki/HELatNLO|(link)]]
+=== References: ===
   * 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)]]

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