2017/07/31 by Reuven Balkin, Gilad Perez, Andreas Weiler
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #Dark Matter and Cosmic Phenomena #Dark matter #Electroweak interaction #Elementary particle #Fermion #Higgs boson #Particle physics theoretical and experimental studies #Phenomenology (philosophy) #Quark #Technicolor #astro-ph.CO #hep-ph
paper · pdf · doi:10.1140/epjc/s10052-018-5552-3
published as Eur.Phys.J. C78 (2018) no.2, 104 · 27 pages + appendices and references, 7 figures
arxiv created 2017/07/31 · openalex created_date 2017/08/08 · openalex publication_date 2018/02/01 · arxiv updated 2018/02/13 · openalex updated_date 2026/08/05
We examine the dark matter phenomenology of a composite electroweak singlet state. This singlet belongs to the Goldstone sector of a well-motivated extension of the Littlest Higgs with T-parity. A viable parameter space, consistent with the observed dark matter relic abundance as well as with the various collider, electroweak precision and dark matter direct detection experimental constraints is found for this scenario. T-parity implies a rich LHC phenomenology, which forms an interesting interplay between conventional natural SUSY type of signals involving third generation quarks and missing energy, from stop-like particle production and decay, and composite Higgs type of signals involving third generation quarks associated with Higgs and electroweak gauge boson, from vector-like top-partners production and decay. The composite features of the dark matter phenomenology allows the composite singlet to produce the correct relic abundance while interacting weakly with the Higgs via the usual Higgs portal coupling λ _\text DM∼ O(1%) , thus evading direct detection.