Coloured coannihilations: dark matter phenomenology meets non-relativistic EFTsBiondini, S. & Vogl, S., 4-Feb-2019, In : Journal of High Energy Physics. 2, 33 p., 16.
Research output: Contribution to journal › Article › Academic › peer-review
We investigate the phenomenology of a simplified model with a Majorana fermion as dark matter candidate which interacts with Standard Model quarks via a colourcharged coannihilation partner. Recently it has been realized that non-perturbative dynamics, including the Sommerfeld effect, bound state formation/dissociation and thermal corrections, play an important role in coannihilations with coloured mediators. This calls for a careful analysis of thermal freeze-out and a new look at the experimental signatures expected for a thermal relic. We employ a state of the art calculation of the relic density which makes use of a non-relativistic effective theory framework and calculate the effective annihilation rates by solving a plasma-modified Schrodinger equation. We determine the cosmologically preferred parameter space and confront it with current experimental limits and future prospects for dark matter detection.
|Number of pages||33|
|Journal||Journal of High Energy Physics|
|Publication status||E-pub ahead of print - 4-Feb-2019|
- Beyond Standard Model, Cosmology of Theories beyond the SM, Effective Field Theories, Thermal Field Theory, AMPLITUDES, NRQCD