Year: 2013
Type: article
Abstract: Lines in the energy spectrum of gamma rays are a fascinating experimental signal, which are often considered ''smoking gun" evidence of dark matter annihilation. The current generation of gamma ray observatories are currently closing in on parameter space of great interest in the context of dark matter which is a thermal relic. We consider theories in which the dark matter's primary connection to the Standard Model is via the top quark, realizing strong gamma ray lines consistent with a thermal relic through the forbidden channel mechanism proposed in the Higgs in Space Model. We consider realistic UV-completions of the Higgs in Space and related theories, and show that a rich structure of observable gamma ray lines is consistent with a thermal relic as well as constraints from dark matter searches and the LHC. Particular attention is paid to the one loop contributions to the continuum gamma rays, which can easily swamp the line signals in some cases, and have been largely overlooked in previous literature.
Authors: C.B Jackson, Géraldine Servant, Gabe Shaughnessy, Tim M.P Tait, Marco Taoso
Institutions: The University of Texas at Arlington, Institució Catalana de Recerca i Estudis Avançats, Universitat Autònoma de Barcelona, Institute for High Energy Physics, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Institut de Physique Théorique, European Organization for Nuclear Research, University of Wisconsin–Madison, University of California, Irvine, University of British Columbia
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2085141193