TY - JOUR
T1 - Reconciling supersymmetric grand unification with αs(mZ)≈0.11
AU - Roszkowski, L.
AU - Shifman, M.
PY - 1996
Y1 - 1996
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevD.53.404
DO - 10.1103/PhysRevD.53.404
M3 - Article
AN - SCOPUS:0001532099
SN - 1550-7998
VL - 53
SP - 404
EP - 412
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 1
ER -