Reconciling Supersymmetric Grand Unification with $\alpha_s(m_Z)\approx 0.11$
Abstract
We argue that supersymmetric grand unification of gauge couplings is not incompatible with small , even without large GUT-scale corrections, if one relaxes a usual universal gaugino mass assumption. A commonly assumed relation is in gross contradiction with . Instead, small favors . If this is indeed the case our observation casts doubt on another commonly used relation which originates from the same constraint of a common gaugino mass at the GUT scale. One firm prediction emerging within the small scenario with the unconstrained gaugino masses is the existence of a relatively light gluino below 200\gev.
Cite
@article{arxiv.hep-ph/9503358,
title = {Reconciling Supersymmetric Grand Unification with $\alpha_s(m_Z)\approx 0.11$},
author = {L. Roszkowski and M. Shifman},
journal= {arXiv preprint arXiv:hep-ph/9503358},
year = {2009}
}
Comments
18 pages, LaTex format for text; epsf.sty needed for including 3 Postscript figures in the text. CHANGES: Comments on dark matter and non-minimal supergravity (see end of Sec. 2.3) and several references added; also some minor corrections made.