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The coannihilation codex

Baker, Michael J.; Brod, Joachim; El Hedri, Sonia; Kaminska, Anna; Kopp, Joachim; Liu, Jia; Thamm, Andrea; Vries, Maikel de; Wang, Xiao-Ping; Yu, Felix; Zurita, José


We present a general classification of simplified models that lead to dark matter (DM) coannihilation processes of the form DM + X → SM1 + SM2, where X is a coannihilation partner for the DM particle and SM1, SM2 are Standard Model fields. Our classification also encompasses regular DM pair annihilation scenarios if DM and X are identical. Each coannhilation scenario motivates the introduction of a mediating particle M that can either belong to the Standard Model or be a new field, whereby the resulting interactions between the dark sector and the Standard Model are realized as tree-level and dimension-four couplings. We construct a basis of coannihilation models, classified by the SU(3)C x SU(2)L x U(1)Y quantum numbers of DM, X and M. Our main assumptions are that dark matter is an electrically neutral color singlet and that all new particles are either scalars, Dirac or Majorana fermions, or vectors. We illustrate how new scenarios arising from electroweak symmetry breaking e ects can be connected to our electroweak symmetric simplified models. We o
er a comprehensive discussion of the phenomenological features of our models, encompassing the physics of thermal freeze-out, direct and indirect detection constraints, and in particular searches at the Large Hadron Collider (LHC). ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000079442
Veröffentlicht am 13.03.2018
DOI: 10.1007/JHEP12(2015)120
Zitationen: 77
Web of Science
Zitationen: 78
Zitationen: 57
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Kernphysik (IKP)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 12.2015
Sprache Englisch
Identifikator ISSN: 1029-8479, 1126-6708
KITopen-ID: 1000079442
HGF-Programm 51.01.01 (POF III, LK 01) Teilchenphysik
Erschienen in Journal of high energy physics
Verlag Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Band 2015
Heft 12
Seiten 1–86
Vorab online veröffentlicht am 17.12.2015
Schlagwörter Phenomenological Models, Hadronic Colliders
Nachgewiesen in Scopus
Web of Science
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