Simplified dark matter model (Alpha version)

Model files

• DMsimp_UFO.zip: the s-channel model files in UFO format

NLO process samples for s-channel mediators

• spin-1 mediator + jets at NLO
  

import model DMsimp_UFO 
generate p p > xd xd~ j DMV=2 DMS=0 QCD=1 QED=0 [QCD]
generate p p > xd xd~ j j  DMV=2 DMS=0 QCD=2 QED=0 [QCD]

• spin-0 mediator + jets at NLO
  

import model DMsimp_UFO-full
generate p p > xd xd~ j DMV=0 DMS=2 QCD=1 QED=0 [QCD]
generate p p > xd xd~ j j  DMV=0 DMS=2 QCD=2 QED=0 [QCD]

• ttbar associated production with a spin-1 mediator at NLO
  

import model DMsimp_UFO 
generate p p > xd xd~ t t~ / y0 [QCD] 

• ttbar associated production with a spin-1 mediator coupling only to tops at NLO
  

import model DMsimp_UFO-onlytops
define p = p b b~
define j = p
generate p p > xd xd~ t t~ / y0 [QCD] 

• ttbar associated production with a spin-0 mediator coupling only to tops at NLO
  

import model DMsimp_UFO-onlytops
define p = p b b~
define j = p
generate p p > xd xd~ t t~ / y1 [QCD] 

• Z associated production with a spin-1 mediator Y1 coupling to light quarks (no coupling of a Z with Y1) at NLO
  

import model DMsimp_UFO
generate p p > xd xd~ z / y0 [QCD]

• W associated production with a spin-1 mediator Y1 coupling to light quarks (no coupling of a W with Y1) at NLO
  

import model DMsimp_UFO
define wpm = w+ w-
generate p p > xd xd~ wpm / y0 [QCD]

• photon associated production with a spin-1 mediator Y1 coupling to light quarks (no coupling of a photon with Y1) at NLO
  

import model DMsimp_UFO
generate p p > xd xd~ a / y0 [QCD]

Loop (top-quark) induced at LO

• loop-induced mono-jet with a spin-0 mediator at LO
  

import model DMsimp_UFO-onlytops  
generate p p > xd xd~ j DMV=0 [QCD]

• loop-induced monojet with a spin-1 mediator at LO
  

import model DMsimp_UFO-onlytops
generate p p > xd xd~ j DMS=0 [QCD]

• loop-induced mono-Higgs with a spin-0 mediator (no interaction between the h and the mediator) at LO
  

import model DMsimp_UFO-onlytops
generate p p > xd xd~ h DMS=2 DMV=0 [QCD]

• loop-induced mono-Higgs with a spin-1 mediator (no interaction between the h and the mediator) at LO
  

import model DMsimp_UFO-onlytops
generate p p > xd xd~ h DMV=2 DMS=0 [QCD]

• loop-induced mono-Z with a spin-0 mediator (no interaction between the Z and the mediator) at LO
  

import model DMsimp_UFO-onlytops
generate p p > xd xd~ z DMS=2 DMV=0 [QCD]

• loop-induced mono-Z with a spin-1 mediator (no interaction between the Z and the mediator) at LO
  

import model DMsimp_UFO-onlytops
generate p p > xd xd~ z DMV=2 DMS=0 [QCD]

• loop-induced mono-photon with a spin-0 mediator (no interaction between the photon and the mediator) at LO
  

import model DMsimp_UFO-onlytops
generate p p > xd xd~ a DMS=2 DMV=0 [QCD]

NOTE: this process gives zero because of C parity for both scalar and pseudoscalar mediators. It is here for reference.

• loop-induced mono-photon with a spin-1 mediator (no interaction between the photon and the mediator) at LO
  

import model DMsimp_UFO-onlytops
generate p p > xd xd~ a DMV=2 DMS=0 [QCD]

Version updates

*2015.06.11 - v0.1_alpha: alpha version.
*2015.06.16 - v0.2_alpha: alpha version : deleted “DMT” coupling (for spin-2 mediator model) from couplings_order.py. Added onlytops restriction to only allow vector and scalar mediators coupling to tops. (Thanks to Uli Haisch for testing).