We argue that supersymmetric grand unification of gauge couplings is not incompatible with small αs, even without large GUT-scale corrections, if one relaxes a usual universal gaugino mass assumption. A commonly assumed relation M2 ≃ mgluino/3 is in gross contradiction with αs ≈ 0.11. Instead, a small αs favors M2 > mgluino. If this is indeed the case our observation casts doubt on another commonly used relation M1≃0.5M2 which originates from the same constraint of a common gaugino mass at the GUT scale. One firm prediction emerging within the small αs scenario with the unconstrained gaugino masses is the existence of a relatively light gluino below ∼200\GeV.
|Original language||English (US)|
|Number of pages||9|
|Journal||Physical Review D - Particles, Fields, Gravitation and Cosmology|
|State||Published - 1996|