Les Houches
2021 Session
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Les Houches Themes
(Lyrics and Music)
(Lyrics and Music)
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 SMDM 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 dim6 operator coupling the Higgs doublet to the DM. A recent reference on this model: http://inspirehep.net/record/1341060?ln=en , see section 3.1.1, in particular eq.(3.3) for the HiggsDMDM 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 nonminimal models are available here: monojetpt.pdf
Useful references
http://arxiv.org/abs/1404.7419
http://arxiv.org/abs/1501.05957
http://arxiv.org/abs/1506.03116
http://arxiv.org/abs/1507.00966
Tools
https://feynrules.irmp.ucl.ac.be/wiki/DMsimp
Micromegas results scdmmicro.tar.gz