2019:groups:bsm:rdm
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2019:groups:bsm:rdm [2019/06/24 13:55] andre.lessa |
2019:groups:bsm:rdm [2019/06/27 08:27] benjamin.fuks |
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| Project Acronym: RDM | 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 | + | 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, Cedric Delaunay, Adil Jueid. |
| [Feel free to add your name here and edit tasks!] | [Feel free to add your name here and edit tasks!] | ||
| - | Goal (ambitious): study the interplay between RD anomalies and Dark Matter. | + | Goal (pseudo-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. | Goal (concrete): use the S1 leptoquark model that solves RD and RD* and study the dark matter aspect. | ||
| - | Tasks: | + | Setup: Work in a model with 3 new particles (S1, chi1, chi0) and 3 couplings y^L_{3X}, y^{R}_{23} and y_D. S1 is a scalar leptoquark solving the RD anomalies, chi1 and chi0 are fermions, probably close in mass, with chi0 being a SM singlet, hence chi1 has the same SM gauge charges as S1. |
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| + | Tasks (updated, from 25.06.2019): | ||
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| + | 1- Expand existing UFO for dark matter: add yD coupling. Make it Micromegas friendly by including tildes for dark particles (see below for details on the model). In charge:JB, DS | ||
| + | |||
| + | **From Benj:** | ||
| + | * FeynRules implementation (v2) + toy mathematica notebook: {{ 2019:groups:bsm:lqdm.fr.v2.tgz | here}}. | ||
| + | * CalcHEP/UFO v2 files: {{ 2019:groups:bsm:lqdm.ch.v2.tgz | CH}} and {{ 2019:groups:bsm:lqdm.ufo.v2.tgz | UFO}}. | ||
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| + | 2- Check flavor constraints: how much can we relax y^L_{3X}, y^{R}_{23} / mS1^2 = 1/(4 TeV^2)? Interest is to lower mS1 and the couplings as much as possible without colliding with other flavor bounds coming from e.g: D-Dbar mixing (that would apply on combinations of couplings and masses, y^{R}_{23}^2 / mS1^2 ). Persons in charge: MN, JB, AB | ||
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| + | 3- Monojet bounds on chi1: Assuming that chi1 decays are soft an go undetected, there will be ***unavoidable*** direct bounds from monojets on the mchi1 mass [Note that in the simplified model chi1 decays 100% into chi0 + SM particles, so there is no branching ratio dillution here). Persons in charge: JZ, DS, AL | ||
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| + | 4- *** NEW ***: There will be constraints from gq -> l + S1 (also in principle gq -> LQ + q + l is possible, but this is suppressed by being a 2-> process instead of a 2->3 one). Persons in charge: GP, AL, JZ | ||
| + | |||
| + | 5- Relic density: We will in principle have two possible production freeze-out modes: either co-annihilation (CA) or conversion-driven (CD). Once #1 is solved, this can be investigated with micromegas (CA) or by private Jan's code (CD). Persons in charge: GB, AG, JMN, DS, JH | ||
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| + | 6- Direct-detection (1-loop induced): This is in principle implemented in Micromegas, so it should be easy to check. Person in charge: GB, AG, DS. | ||
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| + | ------------------------------------------------------------------ | ||
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| + | Tasks (from 20.06.2019 meeting): | ||
| 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. | 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. | ||
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| + | ** References ** | ||
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| + | [[https://arxiv.org/pdf/1902.01789.pdf|1902.01789]] | ||
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| + | [[https://arxiv.org/pdf/1808.08179.pdf|1808.0819]] | ||
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| + | [[https://arxiv.org/pdf/1704.05849.pdf|1704.05849]] | ||
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| + | [[https://arxiv.org/pdf/1608.07583.pdf|1608.07583]] | ||
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| + | [[https://arxiv.org/pdf/1811.10151.pdf|CMS-EXO-17-015]] | ||
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| + | [[https://indico.in2p3.fr/event/17790/sessions/10839/attachments/50940/65234/Stangl_1811_Arles_NP_models.pdf|Zoology of New Physics Models for the Flavour Anomalies]] | ||
2019/groups/bsm/rdm.txt · Last modified: 2019/06/27 17:19 by jose.zurita
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