2013:groups:np:susysms
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2013:groups:np:susysms [2013/06/20 15:15] sabine.kraml |
2013:groups:np:susysms [2013/06/20 15:47] sabine.kraml |
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| - **Digitize... digitize... digitize....**\\ Please provide the information contained in the cross section limit plots in electronic form, either as simple ascii file or a Root file. This is increasingly done by CMS, a good example is [[https://twiki.cern.ch/twiki/bin/view/CMSPublic/PhysicsResultsSUS13011#|SUS13011]], ATLAS is still dragging behind.\\ \\ | - **Digitize... digitize... digitize....**\\ Please provide the information contained in the cross section limit plots in electronic form, either as simple ascii file or a Root file. This is increasingly done by CMS, a good example is [[https://twiki.cern.ch/twiki/bin/view/CMSPublic/PhysicsResultsSUS13011#|SUS13011]], ATLAS is still dragging behind.\\ \\ | ||
| - **For topologies involving cascade decays, provide results for more than one (at least 3) intermediate mass values.**\\ Results on processes involving 2-step decays (e.g. trileptons from EWino decays via sleptons) crucially depend on the intermediate mass value, because this determines the kinematics of the events. If results are given for only one mass fraction value, we cannot use them, because we cannot interpolate. This is for example the case for the 3taus+MET results from CMS, [[https://twiki.cern.ch/twiki/pub/CMSPublic/PhysicsResultsSUS12022/exclusion_TChiStauSnu_0_5.png|SUS12022]], which are available for x=0.5 only. Such results which have only one value of x are in fact completely useless for our purpose. In order to allow interpolation for different intermediate mass values, least three mass fraction are needed. We recommend to provide the results for x = 0.05, 0.5, 0.95 (or if possibe x = 0.05, 0.25, 0.5, 0.75, 0.95).\\ \\ | - **For topologies involving cascade decays, provide results for more than one (at least 3) intermediate mass values.**\\ Results on processes involving 2-step decays (e.g. trileptons from EWino decays via sleptons) crucially depend on the intermediate mass value, because this determines the kinematics of the events. If results are given for only one mass fraction value, we cannot use them, because we cannot interpolate. This is for example the case for the 3taus+MET results from CMS, [[https://twiki.cern.ch/twiki/pub/CMSPublic/PhysicsResultsSUS12022/exclusion_TChiStauSnu_0_5.png|SUS12022]], which are available for x=0.5 only. Such results which have only one value of x are in fact completely useless for our purpose. In order to allow interpolation for different intermediate mass values, least three mass fraction are needed. We recommend to provide the results for x = 0.05, 0.5, 0.95 (or if possibe x = 0.05, 0.25, 0.5, 0.75, 0.95).\\ \\ | ||
| - | + | - **Provide good coverage of the parameter space considered**\\ Large changes in the excluded cross sections (or holes in the parameter space), as present e.g. in [[https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/CONFNOTES/ATLAS-CONF-2013-035/figaux_01a.png|this example]] from the EWino search in ATLAS, cannot be reliably interpolated. Please provide uniform bins or, if this is not feasible, ensure a good coverage of the sensitive region.\\ \\ | |
| - | + | - **Avoid too restrictive assumptions**\\ When presenting an SMS interpretation result, the underlying physics considered should be as generic as possible. Instead of fixing certain aspects of the scenario, it would be more helpful to discuss "default" and extreme cases. For example: | |
| - | * eg. although for other cases of slepton mediated weakino decays more values of x are considered | + | * Same-sign leptons plus jets from gluino and squark production: in [[https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/CONFNOTES/ATLAS-CONF-2013-007/fig_16.png|Fig. 16]] of ATLAS-CONF-2013-007, two mass parameters are fixed (see point 2. above), and flavor-democratic slepton decays are assumed --> Suchita's nightmare analysis. On the other hand, |
| - | * It should be possible to reliably interpolate upper limits between two different points in a SMS result plot | + | * the CMS search for electroweak production of charginos, neutralinos and sleptons using leptonic final states, [[https://twiki.cern.ch/twiki/bin/view/CMSPublic/PhysicsResultsSUS12022|SUS12022]], discusses several extreme cases for slepton decays, which is a more helpful approach. |
| - | * eg. [[https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/CONFNOTES/ATLAS-CONF-2013-035/figaux_01a.png]] large changes in the UL, such as ones represented in this example, can not be interpolated | + | |
| - | * When presenting an SMS interpretation result, the underlying physics considered should be as generic as possible. Instead of fixing certain aspects of the scenario, it might be more helpful to discuss "default" and extreme cases: | + | |
| - | * eg. [[https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/CONFNOTES/ATLAS-CONF-2013-007/fig_16.png]]: two mass parameters are fixed (see item one in our wishlist), and democratic slepton decays are assumed. On the other hand, [[https://twiki.cern.ch/twiki/bin/view/CMSPublic/PhysicsResultsSUS12022]] discusses several extreme cases for slepton decays, which is a more helpful approach. | + | |
| * Expected upper limits on sigma X BR are needed in order to identify the most sensitive topology | * Expected upper limits on sigma X BR are needed in order to identify the most sensitive topology | ||
| * For every 95% CL observed UL plot, the expected UL plot is desirable (as additional material in digital format) | * For every 95% CL observed UL plot, the expected UL plot is desirable (as additional material in digital format) | ||
| * Efficiency maps should be made available from experimental collaborations | * Efficiency maps should be made available from experimental collaborations | ||
2013/groups/np/susysms.txt · Last modified: 2013/10/30 11:12 by sabine.kraml
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