3-7 December 2015
Europe/Warsaw timezone
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SIMP model at NNLO in chiral perturbation theory

Presented by Mr. Kasper LANGæBLE


We investigate the phenomenological viability of a recently proposed class of composite dark matter models where the relic density is determined by 3→2 number-changing processes in the dark sector. Here the pions of the strongly interacting field theory constitute the dark matter particles. By performing a consistent next-to-leading- and next-to-next-to-leading-order chiral perturbative investigation we demonstrate that the leading-order analysis cannot be used to draw conclusions about the viability of the model. We further show that higher-order corrections substantially increase the tension with phenomenological constraints challenging the viability of the simplest realization of the strongly interacting massive particle paradigm.


Phys.Rev. D92 (2015) 075036 DOI: 10.1103/PhysRevD.92.075036 arXiv:1507.01590

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