DMsimp: Simplified dark matter models

Authors

• s-channel (spin-0 and spin-1)
  • Kentarou Mawatari (Iwate U.)
    • Emails: mawatari @ iwate-u.ac.jp
• s-channel (spin-0 and spin-1 electroweak)
  • Jian Wang (Johnnas Gutenberg University of Mainz) & Cen Zhang (IHEP, Beijing)
    • Emails: cenzhang @ ihep.ac.cn
• s-channel (spin-2)
  • Goutam Das (Saha Inst.), Celine Degrande (Université catholique de Louvain) & Kentarou Mawatari (Iwate U.)
    • Emails: goutam.das @ saha.ac.in, celine.degrande @ uclouvain.be, kentarou.mawatari @ het.phys.sci.osaka-u.ac.jp
• s-channel mixed spin-0
  • Chiara Arina & Jan Heisig (Université catholique de Louvain)
    • Emails: chiara.arina @ uclouvain.be

Description of the model

This is simplified dark matter models for NLO.

The mixed spin-0 mediator model is a LO model for MadDM with the inclusion of effective ggY and aaY couplings.

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.]

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" (EPJC75(2015)436).
• ​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" (EPJC75(2015)482).
• ​1509.05785 : M. Neubert, J. Wang, C. Zhang, "Higher-order QCD predictions for dark matter production in mono-Z searches at the LHC" (JHEP1602(2016)082).
• ​1605.09359 : G. Das, C. Degrande, V. Hirschi, F. Maltoni, H. Shao, "NLO predictions for the production of a spin-two particle at the LHC" (PLB770(2017)507).
• ​1701.07008 : S. Kraml, U. Laa, K. Mawatari, K. Yamashita, "Simplified dark matter models with a spin-2 mediator at the LHC" (EPJC77(2017)326).
• ​1703.05703 : LHCDMWG, "Comparing LHC searches for heavy mediators of dark matter production in visible and invisible decay channels" (Phys.Dark Univ.26(2019)100377).
• ​1703.08087 : C. Arina, M. Backovic, J. Heisig, M. Lucente, "Solar gamma rays as a complementary probe of dark matter" (PRD96(2017)063010).
• ​1811.08002 : Y. Afik, F. Maltoni, K. Mawatari, P. Pani, G. Polesello, Y. Rozen, M. Zaro, "DM+bb simulations with DMSimp: an update".

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.
  • dm_s_spin2.fr : the main model file for spin2 mediators.
  • Cabibbo.rst, DiagonalCKM.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.

• UFO files (for, e.g. MadGraph5_aMC@NLO)
  • DMsimp_s_spin0.zip : The model files for spin0 mediators.
  • DMsimp_s_spin0_5f_ybMSbar.zip : The model files for spin0 mediators, especially for bottom associated production (5FS).
  • DMsimp_s_spin0_4f_ybMSbar.zip : The model files for spin0 mediators, especially for bottom associated production (4FS).
  • DMsimp_s_spin1.zip : The model files for spin1 mediators.
  • DMsimp_s_spin2.zip : The model files for spin2 mediators.

(The old alpha version is available ​here.)

Version updates

• spin-0
  • 2015.08.24 - v1.0: release version.
    
  • 2018.11.28 (added the version with MSbar renormalisation for the bottom Yukawa coupling.)
    

• spin-0 mixed
  • 2018.03.25 - 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; see ​1703.05703).
    
  • 2016.10.27 - v2.1 - included the monotop interactions (B. Fuks; see ​1106.6199).
    

• spin-2
  • 2016.06.01 - v1.0: release version.
    
  • 2017.02.01 - v1.1: added Xc and Xv. (K. Mawatari)
    

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

• DMsimp_s_spin1_MD.zip : The model files for spin1 mediators in UFO format (for MadDM).
• DMsimp_s_spin0_MD.zip : The model files for spin0 mediators in UFO format (for MadDM).
• DMsimp_s_spin0_mixed_MD.zip : The model files for spin0 mediators in UFO format (for MadDM).
• DMsimp_s_spin1_MO.zip : The model files for spin1 mediators in CH format (for MicrOMEGAs).
• DMsimp_s_spin0_MO.zip : The model files for spin0 mediators in CH format (for MicrOMEGAs).

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