2019:groups:bsm:rdm
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2019:groups:bsm:rdm [2019/06/27 08:27] benjamin.fuks |
2019:groups:bsm:rdm [2019/06/27 16:45] jose.zurita a |
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| 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. | 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. | ||
| - | Tasks (updated, from 25.06.2019): | + | Tasks (updated from 27.06.2019) |
| - | 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 | + | 1- Existing UFO seems to work. AG wants to check the .fr file. |
| + | 2- Flavor constraints: Marco made a survey of existing bounds. To make a long story short | ||
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| + | a) D-Dbar mixing is suppressed by theta_C^3 and one chirality flip. Gives no meaningful bounds. | ||
| + | b) Bc -> tau nu, Z->tau tau (1-loop x EFT) give bounds (computed). | ||
| + | c) Sewing altogether the allowed region can be displayed in the yL23-yR33 plane, with the results that yL <= yR. The scaling with S1 mass is seemingly trivial (to be checked). Plot by Marco will come soon (from Davide). Ref point of mS1=1.5 TeV, yL=1=yR solves the RD anomalies | ||
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| + | 3) Relic density: from coannihilation, GB says that mchi1=890 and mchi0=800 with yd=1 gives the right relic. Ongoing work (Jan, André, Genevieve) on checking the CDFO. | ||
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| + | 4) Recasting collider searches: | ||
| + | i) Benj wants to set-up the recast of the LQ_res + MET search. | ||
| + | ii) Bounds on chi1 come from mono/multi-jet + MET. Some of these were recasted in Fig.7 of [[https://arxiv.org/pdf/1703.00452.pdf|External Link]] | ||
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| + | Tasks (updated, from 25.06.2019): | ||
| - | **From Benj:** | + | 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: Benj,JB, DS |
| * FeynRules implementation (v2) + toy mathematica notebook: {{ 2019:groups:bsm:lqdm.fr.v2.tgz | here}}. | * 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}}. | * CalcHEP/UFO v2 files: {{ 2019:groups:bsm:lqdm.ch.v2.tgz | CH}} and {{ 2019:groups:bsm:lqdm.ufo.v2.tgz | UFO}}. | ||
2019/groups/bsm/rdm.txt · Last modified: 2019/06/27 17:19 by jose.zurita
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