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2015:groups:higgs:diff [2015/06/09 08:59] kerstin.tackmann |
2015:groups:higgs:diff [2015/07/14 08:22] (current) philippe.gras Added instructions for CERN account |
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| ====== Discussion on Differential Higgs Cross Section Measurements ====== | ====== Discussion on Differential Higgs Cross Section Measurements ====== | ||
| - | //If you are interested in contributing [[2015:groups:topicsignup:Higgsdiff|here]].// | + | //If you are interested in contributing please subscribe to the [[https://e-groups.cern.ch/e-groups/EgroupsSearch.do?searchValue=houches-2015-topics-higgs-diff-xsection|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.// |
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| + | == Session 1 discussion == | ||
| * Discussion focused on H->gammagamma and H->4leptons (and H->WW) | * Discussion focused on H->gammagamma and H->4leptons (and H->WW) | ||
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| * ATLAS combination of H->gammagamma and H->4leptons: http://arxiv.org/abs/1504.05833 (https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2014-11/) | * ATLAS combination of H->gammagamma and H->4leptons: http://arxiv.org/abs/1504.05833 (https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2014-11/) | ||
| * Results from CMS will hopefully be available soon. | * Results from CMS will hopefully be available soon. | ||
| + | * //[Update]// Several talks with details on current and planned measurements were presented at the LHC Higgs XS WG kick-off meeting on fiducial cross sections: https://indico.cern.ch/event/399923/ | ||
| * What would be other useful observables and/or corners of phase space that are not currently measured by the experiments? | * What would be other useful observables and/or corners of phase space that are not currently measured by the experiments? | ||
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| * acceptance corrections to allow extrapolation from fiducial region to full phase space (for convenience) | * acceptance corrections to allow extrapolation from fiducial region to full phase space (for convenience) | ||
| + | * Background subtraction? | ||
| + | * Experimentally H->gammma gamma makes more sense fully background subtracted | ||
| + | * H->ZZ->4l or H->WW->2l2nu could give measurements including irreducible background (with appropriate fiducial phase space definition including eg suitable m4l window in that case) | ||
| + | * In that case prediction for irreducible background should also be provided to allow theorists to easily subtract it if desired | ||
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| + | == Session 2 discussion == | ||
| + | |||
| + | jet selection anti-kT R=0.4, pt>25-30 GeV, |eta|<4.5 | ||
| + | |||
| + | == ggF == | ||
| + | |||
| + | (|eta|<2.5) | ||
| + | |||
| + | 0j : sigma times BR | ||
| + | |||
| + | 1j : pT 100,200,(300,400)_mt,overflow | ||
| + | |||
| + | 2j : bin in 2j exclusive and 3j inclusive, distributions mjj, Delta eta_jj, Delta Phi_jj | ||
| + | |||
| + | == VBF == | ||
| + | |||
| + | 2j : mjj, Delta eta_jj, Delta Phi_jj | ||
| + | |||
| + | == VH == | ||
| + | |||
| + | fully leptonic: mVH 300...500, overflow | ||
| + | |||
| + | 1l, 0l: mT>200 GeV | ||
| + | |||
| + | |||
| + | == ttH == | ||
| + | |||
| + | m_T(ttH) ...,500,... | ||