2020/03/31 by Bohdan Grzadkowski, Michal Iglicki, Krzysztof Mekala +1
Physics and Astronomy · #Atomic and Subatomic Physics Research #Boson #Collider #Cross section (physics) #Dark Matter and Cosmic Phenomena #Dark matter #Field (mathematics) #Higgs boson #Particle physics theoretical and experimental studies #Physics beyond the Standard Model #Standard Model (mathematical formulation) #hep-ph
paper · pdf · doi:10.1007/jhep08(2020)052
31 pages, 13 figures; v2: matches the version to appear in JHEP
openalex created_date 2020/03/23 · arxiv created 2020/08/10 · openalex publication_date 2020/08/12 · arxiv updated 2020/08/26 · openalex updated_date 2026/08/05
A bstract We discuss the possibility to detect spin 0, 1 and \raisebox1ex1 / \raisebox-1ex2. <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mfrac> <mml:mn>1</mml:mn> <mml:mn>2</mml:mn> </mml:mfrac> </mml:math> dark matter (DM) at future e + e − colliders. The models considered here are simple, consistent and renormalizable field theories that provide correct DM abundance and satisfy direct detection, indirect detection and collider constraints. The intention of this paper was to verify to what extent it might be possible to disentangle models of different DM spins by the measurement of the cross section for e + e − → Z + ⋯ at future e + e − colliders. We specialize to the case of the ILC operating at √(s) <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> </mml:math> = 250 GeV, however our results apply as well for the FCC-ee and the CEPC colliders. For each model the cross section maximized with respect to parameters was calculated and compared to the expected 95% CL cross-section limits estimated for the ILC. It turned out that near the 2 m DM ≃ m 1 , 2 resonances, where m 1 and m 2 are the SM Higgs boson and a non-standard Higgs boson masses, respectively, there exist substantial regions where the models are testable. A special attention has been payed to calculation of the cross section in the region where m 1 ≃ m 2 .