ATLAS/CMS Dark Matter Forum Topic: Simplified models with Heavy Quarks

Task: finalize list of simplified models for searches with heavy flavor quarks, including direct searches for DM mediators

Timescale: needs completed by the end of January 2015

The Forum members working on this subject have the responsibility to choose a set of simplified models (matrix element) specific to signatures including heavy flavor quarks that should be agreed upon by both collaborations for Run-2 searches. They will discuss and work with those responsible for the full list and for other channels (see OverallListAndDocumentation page) and include other experts in the discussion if necessary.

Models List

1. Scalar and Pseudoscalar mediators: Main reference: arXiv:1410.6497, Details: ScalarModels
2. b-flavoured simplified models: Details: bFDM
3. Mono-top simplified models: Details: MonoTop

Sub-topics and questions

1. Choice of the mediator and DM mass range
2. Does the width impact the kinematic? Do we need to scan the coupling/width

Work log and plan

Relevant talks at the DM Forum:

• top-flavoured session: https://indico.cern.ch/event/369001/
• extra discussion on width: https://indico.cern.ch/event/371630/
• Final summary on width studies: https://indico.cern.ch/event/378495/contribution/10/material/slides/0.pdf

Suggested timeline and milestones

First ATLAS/CMS Dark Matter Forum meeting: 2nd week of January 2015

• Present a plan for convergence of the list of models
• Start communicating with Forum members working on the subject of the implementation

Second ATLAS/CMS Dark Matter Forum meeting: last week of January 2015

• Have a final list of selected models with HF to serve as Run-2 benchmarks
• Actively participate in decision of grid points and various implementations to be used

Third ATLAS/CMS Dark Matter Forum meeting: second week of February 2015

• Prepare documentation suitable both as a reference for the internal ATLAS and CMS audiences and as an explanation for theory and non-­‐collider readers.
• Share written documentation with Forum participants and reviewers

-- CaterinaDoglioni - 2014-12-11