1995/03/30 by Leszek Roszkowski, L. Roszkowski, M. Shifman +1
Mathematics · Physics and Astronomy · #Black Holes and Theoretical Physics #Combinatorics #Gaugino #Gluino #Grand Unified Theory #Mathematical physics #Mathematics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Supersymmetry #hep-ph
paper · pdf · doi:10.1103/physrevd.53.404
published as Phys.Rev. D53 (1996) 404-412 · 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.
arxiv created 1995/03/30 · openalex publication_date 1996/01/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We argue that supersymmetric grand unification of gauge couplings is not incompatible with small \mathrm\ensuremathαs, even without large GUT-scale corrections, if one relaxes a usual universal gaugino mass assumption. A commonly assumed relation M2\ensuremath≃m_g\mathrm\ifmmode \else \~\fi/3 is in gross contradiction with \mathrm\ensuremathαs\ensuremath\approxeq0.11. Instead, a small \mathrm\ensuremathαs favors M2\ensuremath≫m_g\mathrm\ifmmode\else\textasciimacron\fi. If this is indeed the case our observation casts doubt on another commonly used relation M1\ensuremath≃0.5M2 which originates from the same constraint of a common gaugino mass at the GUT scale. One firm prediction emerging within the small \mathrm\ensuremathαs scenario with the unconstrained gaugino masses is the existence of a relatively light gluino below \ensuremath∼200 GeV. \textcopyright 1995 The American Physical Society.