Les Houches

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Project Acronym: RDM

Interested people: Benj, Andreas Goudelis, Genevieve Belanger, Dipan Sengupta, Aoife Bharucha, José Zurita, Jose Miguel No, Jordan Bernigaud, Jan Heisig, Giacomo Polesello, Priscilla Pani, Biplob Bhattacherjee, Andre Lessa

[Feel free to add your name here and edit tasks!]

Goal (ambitious): study the interplay between RD anomalies and Dark Matter.

Goal (concrete): use the S1 leptoquark model that solves RD and RD* and study the dark matter aspect.

Tasks:

1- Get a working Lagrangian. From private communication with D. Marzocca we need to have both left handed and right handed couplings to S1. The dark sector includes a chi1 (coloured and charged) and a chi0 (singlet) field. The implementation include LQ couplings to lepton and quark doublets (bL-vL) and LQ couplings to the lepton and quark singlets (cR-tauR). The model finally includes a 3rd coupling (yDM) to the chi1-chi0 pair. Persons in charge: Benjamin, Dipan.

• A FeynRules implementation is now available and can be downlaoded from here. The tarball contains the SM implementation (sm.fr), the new physics sector implementation (lqdm.fr) and a toy mathematica notebook (use-LQDM.nb).
• The provided mathematica notebook has been used to generate UFO and CalcHep model files.
• Here is a note detailing what has been implemented. The TeX version is also available.
• Important message from Benj: The model still needs to be double-checked by an independent pair of eyes!

2- RD explained by mS1=2 TeV, and both lq couplings being 1. (From D. Marzocca). Anomaly explained by lambda_bv * lambda_ctau / mS1^2.

3- Study bounds from direct detection. These happen at the 1-loop level, expressions known in literature for the SUSY case. In charge: Genevieve, Andreas, Dipan, Jose Miguel.

4- look into CMS search for LQ + MET (motivated by the “Coannihilation Codex”) and for existing searches constraining chi1. In charge: Aoife, José.

5- study relic density (after 1-4 are done). Jan