Sneutrino Dark Matter via pseudoscalar X-funnel meets Inverse Seesaw · arXivDesk
1806.04468Jun 12, 201824 pages, 8 figures, and 2 tables. https://sarah.hepforge.org/trac/wiki/inverse-Seesaw-SUSY-EW, v2: correspond to published version
Sneutrino Dark Matter via pseudoscalar X-funnel meets Inverse Seesaw
In this paper we study sneutrino dark matter in a recently proposed supersymmetric electroweak-scale inverse seesaw model, in which the majority of the sneutrino dark matter particle is a mixture of the right-handed sneutrino N~c and the singlet field S~. The scalar field X
Nearby in the stack
responsible for the generation of neutrino masses can simultaneously play a crucial role for sneutrino annihilation in the early Universe via the pseudoscalar mediator
AX
into neutrinos. We focus here on the dominant annihilation channels and provide all the formulas together with analytic estimates in order to identify the relevant parameters. Furthermore, we show that the direct detection scattering cross section is many orders of magnitude below the current limits, and estimate the indirect detection annihilation rate, which is only a few orders of magnitude below the current limits.