{ "id": "1807.04240", "version": "v1", "published": "2018-07-11T16:45:31.000Z", "updated": "2018-07-11T16:45:31.000Z", "title": "Collider signatures for dark matter and long-lived particles with Pythia 8", "authors": [ "Nishita Desai" ], "comment": "11 pages, 4 figures", "categories": [ "hep-ph" ], "abstract": "We describe the implementation of four models for production of dark matter or as- sociated particles at the LHC based on the simplest extensions of the Standard Model. The first kind of models include dark matter production via s-channel mediators. This includes production in association with a jet for a vector boson (Z') or scalar (S) mediator as well as mono-higgs production via associated hZ' production. We implement the simplest t-channel mediator in the form of a scalar with leptonic quantum numbers and completely generic Yukawa couplings to the dark matter fermion and a right-handed SM lepton. Finally, we implement a generalised model of mixed dark matter where the dark matter is a mixture of an SU(2) singlet and N-plet. We find that the last two models are also ideally suited to study the production of a range of long-lived particle signatures. We illustrate this by reinterpreting the limits from CMS search for heavy charged particles for the t-channel case.", "revisions": [ { "version": "v1", "updated": "2018-07-11T16:45:31.000Z" } ], "analyses": { "keywords": [ "collider signatures", "dark matter production", "dark matter fermion", "generic yukawa couplings", "simplest t-channel mediator" ], "note": { "typesetting": "TeX", "pages": 11, "language": "en", "license": "arXiv", "status": "editable" } } }