Are heavy scalars natural in minimal supergravity?
High Energy Physics - Phenomenology
2009-10-09 v2
Abstract
It has been recently claimed that very large values of a universal soft mass term m_0 for sfermions and higgs bosons become natural when M_top is close to 175 GeV if tan\beta\approx 10. We show that very large values of m_0 require accidental cancellations not guaranteed by experimental data or theoretical assumptions, and consequently an unnatural fine-tuning of the parameters.
Cite
@article{arxiv.hep-ph/9912301,
title = {Are heavy scalars natural in minimal supergravity?},
author = {Andrea Romanino and Alessandro Strumia},
journal= {arXiv preprint arXiv:hep-ph/9912301},
year = {2009}
}
Comments
4 pages. v2: dicussion clarified, final version