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2015:groups:higgs:dmhiggs:eftdm [2015/06/14 17:53] daniel.schmeier |
2015:groups:higgs:dmhiggs:eftdm [2015/07/24 10:02] andreas.goudelis |
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**Chair:** Andreas Goudelis | **Chair:** Andreas Goudelis | ||
- | **Members:** Benjamin Fuks, Nishita Desai, Giacomo Polesello, Sanjoy Biswas, Suchita Kulkarni, Dipan Sengupta, Björn Herrmann, Daniel Schmeier, Daniele Barducci | + | **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 |
- | ** Ideas ** | + | ** Main idea: ** |
- | * Do existing EFT-versus-Model studies cover **all** interesting EFT operators? (What about t-channel, glu-glu-chi-chi) | + | 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. |
- | * Allow observed excesses in monoX studies at the LHC distinction of the underlying EFT 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: http://inspirehep.net/record/1341060?ln=en , 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. | ||
**Useful references** | **Useful references** | ||
- | * A simple comparison of Monojet qqXX vs Dijet qqqq and Dilepton qqll limits on purely effective contact interactions | ||
- | http://arxiv.org/abs/1303.3348 | ||
- | * A study of the complementarity among monojet and dilepton searches for a variety of Z' - mediated simplified models: | + | * Composite Dark Matter and LHC Interplay |
- | http://arxiv.org/abs/1401.0221 | + | http://arxiv.org/abs/1404.7419 |
- | * An EFT "cutting" method in order to obtain consistent constraints in EFT frameworks, that is likely to be adopted by ATLAS/CMS in their analyses: | + | |
- | http://arxiv.org/abs/1502.04701 | + | * Dark Matter Constraints on Composite Higgs Models |
- | * A study of the complementarity among monojet and dijet searches for a variety of Z' - mediated simplified models (so no couplings to leptons assumed): | + | http://arxiv.org/abs/1501.05957 |
- | http://arxiv.org/abs/1503.05916 | + | |
* A rather inclusive summary on signatures of various EFT DM models | * A rather inclusive summary on signatures of various EFT DM models | ||
http://arxiv.org/abs/1506.03116 | http://arxiv.org/abs/1506.03116 | ||
+ | |||
+ | * The ATLAS/CMS Dark Matter forum summary | ||
+ | http://arxiv.org/abs/1507.00966 | ||
+ | |||
+ | * A relevant MSc thesis from a student of Michele's (in French) | ||
+ | {{:2015:groups:higgs:dmhiggs:rapport.pdf|}} | ||
**Tools** | **Tools** | ||
* UFO model file for some s-channel simplified models: | * UFO model file for some s-channel simplified models: | ||
https://feynrules.irmp.ucl.ac.be/wiki/DMsimp | https://feynrules.irmp.ucl.ac.be/wiki/DMsimp | ||
+ | |||
+ | * FeynRules (with corresponding CalcHEP and UFO) model files for the singlet model, with an effective g-g-h vertex implemented for h production | ||
+ | {{:2015:groups:higgs:dmhiggs:compositedmleshouches.tar|}} | ||
+ | |||
+ | **Micromegas results** | ||
+ | {{:2015:groups:higgs:dmhiggs:scdm-micro.tar.gz|}} | ||