Composite Higgsino
Abstract
Several supersymmetric models in which there is a (partially) composite Higgs boson arising from (coupled to) a strong sector have been proposed. Such strong dynamics would help to cause the electroweak symmetry breaking naturally. In this paper, we focus on the compositeness of the Higgsinos in such models. We show that such a Higgsino compositeness can induce the characteristic decay branching fraction of the neutralinos. In such scenarios, the decay branching fraction of the second lightest neutral Higgsino into the lightest neutral Higgsino with photon can be large due to a dipole interaction. We also discuss the Higgsino dark matter feature. The annihilation cross section into gamma Z can be large.
Cite
@article{arxiv.1311.6823,
title = {Composite Higgsino},
author = {Masaki Asano and Ryosuke Sato},
journal= {arXiv preprint arXiv:1311.6823},
year = {2015}
}
Comments
16 pages, 3 figures, v2: added references and comments, fixed typos and modified comments, in particular, the value of the annihilation cross section is modified and we explicitly describe the coeffeicient which depends on SUSY breaking and origin of the magnetic moment terms to avoid misunderstandings