TY - JOUR
T1 - New constraints on superpartner masses
AU - Falk, Toby
AU - Olive, Keith A.
AU - Roszkowski, Leszek
AU - Srednicki, Mark
PY - 1996/1/18
Y1 - 1996/1/18
N2 - We consider the Minimal Supersymmetric Standard Model (MSSM) without imposing relations on the superpartner masses that arise in grand unified theories. Given an arbitrary pattern of superpartner masses (consistent with experimental constraints), it may happen that the scalar potential is actually unstable, even though all scalar masses-squared are positive at the weak scale Mw. This is most likely to happen if the running mass-squared in a "flat" direction in field space becomes negative at some scale Q0 which is well below the GUT scale. In this case, either this pattern of masses is ruled out, or there must be new physics (beyond the MSSM) at or below the scale Q0.
AB - We consider the Minimal Supersymmetric Standard Model (MSSM) without imposing relations on the superpartner masses that arise in grand unified theories. Given an arbitrary pattern of superpartner masses (consistent with experimental constraints), it may happen that the scalar potential is actually unstable, even though all scalar masses-squared are positive at the weak scale Mw. This is most likely to happen if the running mass-squared in a "flat" direction in field space becomes negative at some scale Q0 which is well below the GUT scale. In this case, either this pattern of masses is ruled out, or there must be new physics (beyond the MSSM) at or below the scale Q0.
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U2 - 10.1016/0370-2693(95)01430-6
DO - 10.1016/0370-2693(95)01430-6
M3 - Article
AN - SCOPUS:0001489721
SN - 0370-2693
VL - 367
SP - 183
EP - 187
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 1-4
ER -