wiki:DMsimp

Version 58 (modified by mawatari, 8 years ago) ( diff )

spin2

Simplified dark matter models

Authors

  • s-channel (spin-0 and spin-1)
    • Antony Martini (Université catholique de Louvain) & Kentarou Mawatari (LPSC Grenoble)
      • Emails: kentarou.mawatari @ lpsc.in2p3.fr
  • s-channel (spin-0 and spin-1 electroweak)
    • Jian Wang (Johnnas Gutenberg University of Mainz) & Cen Zhang (Brookhaven National Laboratory)
      • Emails: cenzhang @ bnl.gov
  • s-channel (spin-2)
    • Goutam Das (Saha Inst.), Celine Degrande (CERN) & Kentarou Mawatari (LPSC Grenoble)
      • Emails: goutam.das @ saha.ac.in, celine.degrande @ cern.ch, kentarou.mawatari @ lpsc.in2p3.fr

Description of the model

This is simplified dark matter models for NLO. Our lagrangian consists of different types of DM:

  • Xr (real scalar DM)
  • Xc (complex scalar DM)
  • Xd (Dirac spinor DM)
  • Xm (Majorana spinor DM) [to be done.]
  • Xv (vector DM)
  • ...

and different types of mediators:

  • s-channel
    • Y0 (spin-0)
    • Y1 (spin-1)
    • Y2 (spin-2)
    • ...
  • t-channel [to be done.]

One can find the model lagrangian in the note. See more details in

  • ​1508.00564 : O. Mattelaer, E. Vryonidou, "Dark matter production through loop-induced processes at the LHC: the s-channel mediator case".
  • ​1508.05327 : M. Backovic, M. Kramer, F. Maltoni, A. Martini, K. Mawatari, M. Pellen, "Higher-order QCD predictions for dark matter production at the LHC in simplified models with s-channel mediators".
  • ​1509.05785 : M. Neubert, J. Wang, C. Zhang, "Higher-order QCD predictions for dark matter production in mono-Z searches at the LHC".
  • ​1701.07008 : S. Kraml, U. Laa, K. Mawatari, K. Yamashita, "Simplified dark matter models with a spin-2 mediator at the LHC".

Model files

  • FR files
    • dm_s_spin0.fr : the main model file for spin0 mediators.
    • dm_s_spin0_ew.fr : the add-on model file for spin0 mediators for EW.
    • dm_s_spin1.fr : the main model file for spin1 mediators.
    • dm_s_spin1_ew.fr : the add-on model file for spin1 mediators for EW.
    • Cabibbo.rst, Massless_5f.rst : the restriction files.
    • DMsimp_s_spin0.nb : this is an example Mathematica notebook that loads the spin-0 model, calculates the Feynman rules and extract the model files within the UFO format.
    • DMsimp_s_spin1.nb : this is an example Mathematica notebook that loads the spin-1 model, calculates the Feynman rules and extract the model files within the UFO format.

(The old alpha version is available ​here.)

Version updates

  • spin-0
    • 2015.08.24 - v1.0: release version.
  • spin-1
    • 2015.08.24 - v1.0: release version.
    • 2016.09.23 - v2.0: included the Y1-lepton interactions (B.Zaldivar).
    • 2016.10.27 - v2.1 - included the monotop interactions (B. Fuks).

Sample commands for MadGraph5_aMC@NLO

NLO process samples for s-channel spin-1 mediators

  • Associated production with jets 
import model DMsimp_s_spin1
generate p p > xd xd~ j [QCD]
add process p p > xd xd~ j j [QCD]
  • Associated production with a Higgs 
import model DMsimp_s_spin1
generate p p > xd xd~ h [QCD]

NLO process samples for s-channel spin-0 mediators

  • Associated production with a top-quark pair 
import model DMsimp_s_spin0
generate p p > xd xd~ t t~ / a z w+ w- [QCD]
  • Associated production with a photon/Z/W 
import model DMsimp_s_spin0
generate p p > xd xd~ a [QCD]
generate p p > xd xd~ z [QCD]
generate p p > xd xd~ w+ [QCD]
generate p p > xd xd~ w- [QCD]

LO loop-induced process samples for s-channel mediators

  • mono-jet 
import model DMsimp_s_spin0
generate p p > xd xd~ j [QCD]
  • mono-Z 
import model DMsimp_s_spin0
generate p p > xd xd~ z / a z [QCD]
  • mono-photon (will be 0 for all couplings) 
import model DMsimp_s_spin0
generate p p > xd xd~ a / a z [QCD]
  • mono-Higgs 
import model DMsimp_s_spin0
generate p p > xd xd~ h / h [QCD]

Model files for tools for DM relic abundance and DM (in)direct detections

(The model keeps all the quark masses finite, and apply only to tree-level processes.)

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