SimplifiedModelsGridsDirectDecay

For further info info, please contact: Robin van der Leeuw,Marija Vranjes Milosavljevic .

Introduction

There are 3 direct decay simplified model grids, two of which are updates of the mc11 direct decay grids, described here. The following will therefore borrow some pieces from this website (by Zach Marshall). These grids are mainly used for interpretations of the 0-lepton analysis, see for instance here for the SUSY12 results in these grids.

Description of the grids

General

There are 3 direct decay simplified model grids: one with 2 squarks produced, one with 2 gluinos produced and one with a squark and a gluino produced. In all these grids the decay is directly into quarks and an LSP. The latter is new in mc12, the 2 former grids are updates of mc11 grids. These mc12 grids were first proposed in this talk, decision shown in last 2 slides of this talk. The grid point granularity is based on expectation of best reach with 2012 data, with extra focus on the compressed region. The number of events per grid is ~3M, with more events for the compressed and low mass points.

SM_SS: di-squark direct decay

  • Dataset numbers: 162000-162349
  • Only squark-antisquark pruduced, which both decay into a quark and an LSP: ~q+~q -> q + q + LSP + LSP
  • Generator used: Madgraph (see MadGraphInProdSys)
  • Number of events per point:
    • 5000 events in the bulk ( m_sq > 500 GeV && m_sq - m_LSP > 400 GeV )
    • 10000 events for medium mass splitting ( m_sq - m_LSP > 200 GeV && m_sq - m_LSP < 400 GeV )
    • 15000 events for low mass splitting and medium squark mass ( m_sq - m_LSP < 200 GeV && m_sq > 500 GeV )
    • 20000 events for low mass splitting and low squark mass ( m_sq - m_LSP < 200 GeV && m_sq < 500 GeV )
  • Cross sections: /afs/cern.ch/atlas/groups/susy/SignalCrossSectionsUncert/SimplModels/SignalUncertainties-SM_SS_direct_mc12.root
  • For more clarity: a plot showing the grid with the number of events per point:
SS_500_400_200.png

SM_GG: di-gluino direct decay

  • Dataset numbers: 162350-162806
  • Only gluino-gluino pruduced, which both decay into two quarks and an LSP: ~g+~g -> 2q + 2q + LSP + LSP
  • Generator used: Madgraph (see MadGraphInProdSys)
  • Number of events per point:
    • 5000 events in the bulk ( m_gl > 500 GeV && m_gl - m_LSP > 400 GeV )
    • 10000 events for medium mass splitting ( m_gl - m_LSP > 200 GeV && m_gl - m_LSP < 400 GeV)
    • 15000 events for low mass splitting and medium gluino mass ( m_gl - m_LSP < 200 GeV && m_gl > 500 GeV )
    • 20000 events for low mass splitting and low gluino mass ( m_gl - m_LSP < 200 GeV && m_gl < 500 GeV )
  • Cross sections: /afs/cern.ch/atlas/groups/susy/SignalCrossSectionsUncert/SimplModels/SignalUncertainties-SM_GG_direct_mc12.root
  • For more clarity: a plot showing the grid with the number of events per point:
GG_500_400_200.png

SM_SG: squark-gluino direct decay

  • Dataset numbers: 162807-163139
  • Only squark-gluino pruduced, the first of which decays into a quark and an LSP, the second into two quarks and an LSP: ~q+~g -> q + 2q + LSP + LSP
  • m_sq = 0.96 * m_gl
  • Generator used: Madgraph (see MadGraphInProdSys)
  • Number of events per point:
    • 5000 events in the bulk ( m_gl > 500 GeV && m_gl - m_LSP > 400 GeV )
    • 10000 events for medium mass splitting ( m_gl - m_LSP > 200 GeV && m_gl - m_LSP < 400 GeV)
    • 15000 events for low mass splitting and medium gluino mass ( m_gl - m_LSP < 200 GeV && m_gl > 500 GeV )
    • 20000 events for low mass splitting and low gluino mass ( m_gl - m_LSP < 200 GeV && m_gl < 500 GeV )
  • Cross sections: /afs/cern.ch/atlas/groups/susy/SignalCrossSectionsUncert/SimplModels/SignalUncertainties-SM_SG_direct_mc12.root
  • For more clarity: a plot showing the grid with the number of events per point:
SG_500_400_200.png

Further technical details

  • Savannah production request and details: request

-- RobinVanDerLeeuw - 18-Sep-2012

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PNGpng GG_500_400_200.png r1 manage 53.3 K 2012-09-19 - 15:55 RobinVanDerLeeuw  
PNGpng SG_500_400_200.png r1 manage 52.7 K 2012-09-19 - 15:55 RobinVanDerLeeuw  
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