Split Supersymmetry Breaking from Stuckelberg Mixing of Multiple U(1)'s
Abstract
We show that multiple Abelian sectors with Stuckelberg mass-mixing simply break supersymmetry via Fayet-Iliopoulos D-terms and straightforwardly mediate it to the other sectors. This mechanism naturally realizes a split supersymmetry spectrum for soft parameters. Scalar squared-masses (holomorphic and non-holomorphic) are induced through sizable portals and are not suppressed. Gaugino masses, a-terms and a mu-like term are generated by higher-dimensional operators and are suppressed. The hypercharge is mixed with extra U(1)'s, it's D-term in non-vanishing and supersymmetry is broken in the visible sector too. Scalar tachyonic directions are removed by unsuppressed interactions and hypercharge is preserved as supersymmetry is broken. Moreover, if a singlet chiral field is charged under additional 's proportional to its hypercharge, new interaction terms in the Kahler potential and the superpotential are added through Stuckelberg compensation. In this case supersymmetry is broken via F-terms or mixed F and D-terms.
Keywords
Cite
@article{arxiv.1810.06260,
title = {Split Supersymmetry Breaking from Stuckelberg Mixing of Multiple U(1)'s},
author = {Ghazaal Ghaffari and Mahdi Torabian},
journal= {arXiv preprint arXiv:1810.06260},
year = {2019}
}
Comments
6 pages, v2: typos corrected, references added, major corrections to section 3