2013:groups:np:susysms
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2013:groups:np:susysms [2013/06/20 16:47] sabine.kraml |
2013:groups:np:susysms [2013/06/21 08:58] sezen.sekmen |
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| * On the other hand, 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.\\ \\ | * On the other hand, 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.\\ \\ | ||
| - **For topologies involving different decays on each leg, parametrize results in terms of branching fractions.**\\ A typical example is stop1 pair production with one stop decaying into top+neutralino1 and the other one into bottom+chargino1. The final state is tb+MET, but the constraints on the cross section depend on 3 masses (stop1, chargino1, neutralino1) as well as the 2 branching ratios. If only the two decay channels are open, BR(stop1 --> bottom+chargino1) = 1-BR(stop1 --> top+neutralino1), leaving us with 4 free parameters. It would be useful to present results in, e.g., the stop1 versus neutralino1 mass plane for different values of branching ratios.\\ \\ | - **For topologies involving different decays on each leg, parametrize results in terms of branching fractions.**\\ A typical example is stop1 pair production with one stop decaying into top+neutralino1 and the other one into bottom+chargino1. The final state is tb+MET, but the constraints on the cross section depend on 3 masses (stop1, chargino1, neutralino1) as well as the 2 branching ratios. If only the two decay channels are open, BR(stop1 --> bottom+chargino1) = 1-BR(stop1 --> top+neutralino1), leaving us with 4 free parameters. It would be useful to present results in, e.g., the stop1 versus neutralino1 mass plane for different values of branching ratios.\\ \\ | ||
| - | - **Give expected upper limits on sigma x BR in addition to the observed ones**\\ The expected upper limits are needed in order to identify the most sensitive topology. This is crucial for a correct statistical treatment of complex spectrum decompositions, which may be constrained by more than topology.\\ | + | - **Give expected upper limits on sigma x BR in addition to the observed ones**\\ The expected upper limits are needed in order to identify the most sensitive topology. This is crucial for a correct statistical treatment of complex spectrum decompositions, which may be constrained by more than topology.\\ |
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| + | - **Incorporate likelihoods from the new physics searches**\\ Incorporate likelihoods from LHC new physics searches in SModels using Roofit/Roostats framework to facilitate a more precise interpretation of full models using simplified model spectra (SMSs.\\ | ||
| Let us also point out that **efficiency maps** provided by the experimental collaborations would be very useful for enlarging the scope of SMS interpretations. | Let us also point out that **efficiency maps** provided by the experimental collaborations would be very useful for enlarging the scope of SMS interpretations. | ||
2013/groups/np/susysms.txt · Last modified: 2013/10/30 11:12 by sabine.kraml
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