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Les Houches

2019 Session

Wikis of Previous sessions

Les Houches Themes



Chair: Andreas Goudelis

Members: Benjamin Fuks, Nishita Desai, Giacomo Polesello, Sanjoy Biswas, Suchita Kulkarni, Dipan Sengupta, Björn Herrmann, Daniel Schmeier, Daniele Barducci, Michele Frigerio, Aoife Bharucha, Genevieve Belanger

Main idea: Would an observed excess of j+MET events allow for a distinction of the underlying model? Can the monojet pT distribution differentiate among different SM-DM couplings? An enhancement of the signal for large pT occurs if the coupling is proportional to the exchanged momentum; this happens for a derivative coupling, typically encountered, e.g., in compositeness models.

Simplest example: The SM plus one singlet scalar DM, including a dim-6 operator coupling the Higgs doublet to the DM. A recent reference on this model: , see section 3.1.1, in particular eq.(3.3) for the Higgs-DM-DM coupling, if somebody is interested to generate the related pT distribution…

A preliminary study of the monojet signature in this model was performed in the master thesis by Sylvain Lacroix (2013, in French): see section 3.9 for the case without derivative coupling, and section 4.3 for the addition of the derivative operator.

Notes by M.Frigerio including motivations, the simplest model, and two non-minimal models are available here: monojetpt.pdf

Useful references

  • Composite Dark Matter and LHC Interplay

  • Dark Matter Constraints on Composite Higgs Models

  • A rather inclusive summary on signatures of various EFT DM models

  • The ATLAS/CMS Dark Matter forum summary

  • A relevant MSc thesis from a student of Michele's (in French)



  • UFO model file for some s-channel simplified models:

  • FeynRules (with corresponding CalcHEP and UFO) model files for the singlet model, with an effective g-g-h vertex implemented for h production


Micromegas results scdm-micro.tar.gz

2015/groups/higgs/dmhiggs/eftdm.txt · Last modified: 2015/08/11 11:52 by michele.frigerio