Dark matter as a remnant of SQCD inflation

• Published in: The journal of high energy physics Vol. 2018; no. 10; pp. 1 - 33
• Main Authors: Bhattacharya, Subhaditya, Saha, Abhijit Kumar, Sil, Arunansu, Wudka, Jose
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.10.2018; Springer Nature B.V; SpringerOpen
• Subjects: Breaking; Classical and Quantum Gravitation; Cosmology of Theories beyond the SM; Dark matter; Elementary Particles; Energy theory; Gauge theory; High energy physics; Phenomenology; Physics; Physics and Astronomy; Quantum chromodynamics; Quantum Field Theories; Quantum Field Theory; Quantum Physics; Regular Article - Theoretical Physics; Relativity Theory; String Theory; Supersymmetric Standard Model; Supersymmetry; Symmetry; Supersymmetric Standard Model; Cosmology of Theories beyond the SM
• ISSN: 1029-8479; 1029-8479
• DOI: 10.1007/JHEP10(2018)124

A bstract We propose a strongly coupled supersymmetric gauge theory that can accommodate both the inflation (in the form of generalized hybrid inflation) and dark matter (DM). In this set-up, we identify the DM as the Goldstones associated with the breaking of a global symmetry (SU(4) × SU(4) → SU(4)) after inflation ends. Due to the non-abelian nature of this symmetry, the scenario provides with multiple DMs. We then construct a low energy theory which generates a Higgs portal like coupling of the DMs with Standard Model (SM), thus allowing them to thermally freeze out. While the scales involved in the inflation either have a dynamical origin or related to UV interpretation in terms of a heavy quark field in the supersymmetric QCD (SQCD) sector, the DM masses however are generated from explicit breaking of the chiral symmetry of the SQCD sector. We discuss DM phenomenology for both degenerate and non-degenerate cases, poised with DM-DM interactions and find allowed region of parameter space in terms of relic density and direct search constraints.