====== Compressed spectra, stops, EWinos ====== //If you are interested in contributing please subscribe to the [[https://e-groups.cern.ch/e-groups/EgroupsSearch.do?searchValue=houches-2015-topics-bsm-compspec|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.// **EWinos** * Proposal to study pp-> chi2,chi3 -> gamma l^+ l^- chi1 chi1. Signal with low MET if chi1 much lighter than nearly degenerate chi2,chi3. * Higgs to electroweakino => in Higgs group [[2015:groups:higgs:morehiggs:hxx|Higgs to electroweakino]] * EWinos decays to other (light) Higgses e.g. in NMSSM => cross-section too small if decays into Higgs. Is there anything not covered by 2HDM Higgs searches? Daniele Barducci, Genevieve Belanger, Dipan Sengupta **Compressed spectra** * Analyse the decay squark -> q lepton + RH sneutrino in a regime where the squark, sneutrino splitting is small (as arises in some Pati-Salam type of GUTs). Basic question: How large the splitting must be for the signal to be visible at the LHC? __Leader__: Werner Porod, __other members__:??? * What prospectfo ISR tagging? * Studying dilepton invariant mass distribution below 20GeV might be needed if compressed spectra. __Leader__: ???, __other members__:??? **Stops** * Is light stop totally excluded in the MSSM? __Leader__:Giacomo P. __other members__:??? Two holes hard to analyse: 1) stop close in mass with LSP+top, in a regime where top cross-section measurements doesn't help. 2) stop -> b chargino in a regime where W is off-shell. * Which Higgs mass tool to trust in a regime where stops are around 1TeV. Spheno,softSUSY,suspect VS. FeynHiggs VS. SUSYHD. **Please add your name (or a topic) if you think it's missing**