2009/02/28 by Partha Konar, Kyoungchul Kong, K. Matchev +2 · 2 citations
Physics and Astronomy · #Annihilation #Cosmology #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark energy #Dark matter #International Linear Collider #Massive particle #Pair production #Parameter space #Parametrization (atmospheric modeling) #Particle physics #Particle physics theoretical and experimental studies #Photon #Physics #Physics beyond the Standard Model #Quantum mechanics #Scalar field dark matter #Universal extra dimension #WIMP #Weakly interacting massive particles #hep-ph
paper · pdf · doi:10.1088/1367-2630/11/10/105004
published as New J.Phys.11:105004,2009 · 21 pages, 9 figures
arxiv created 2009/04/28 · openalex publication_date 2009/10/16 · arxiv updated 2010/04/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
A weakly interacting massive particle (WIMP) provides an attractive dark matter candidate, and should be within reach of the next generation of high-energy colliders. We consider the process of direct WIMP pair-production, accompanied by an initial-state radiation photon, in electron–positron collisions at the proposed International Linear Collider (ILC). We present a parametrization of the differential cross section for this process which conveniently separates the model-independent information provided by cosmology from the model-dependent inputs from particle physics. As an application, we consider two simple models, one supersymmetric and another of the 'universal extra dimensions' (UED) type. The discovery reach of the ILC and the expected precision of parameter measurements are studied in each model. In addition, for each of the two examples, we also investigate the ability of the ILC to distinguish between the two models through a shape-discrimination analysis of the photon energy spectrum. We show that with sufficient beam polarization the alternative model interpretation can be ruled out in a large part of the relevant parameter space.