The MSSM parameter space with non-universal Higgs masses

John Ellis, Keith A. Olive, Yudi Santoso

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209 Scopus citations


Without assuming that Higgs masses have the same values as other scalar masses at the input GUT scale, we combine constraints on the minimal supersymmetric extension of the Standard Model (MSSM) coming from the cold dark matter density with the limits from direct searches at accelerators such as LEP, indirect measurements such as b → sγ decay and the anomalous magnetic moment of the muon. The requirement that Higgs masses-squared be positive at the GUT scale imposes important restrictions on the MSSM parameter space, as does the requirement that the LSP be neutral. We analyze the interplay of these constraints in the (μ, mA), (μ, m1/2), (m1/2, m0) and (mA, tan β) planes. These exhibit new features not seen in the corresponding planes in the constrained MSSM in which universality is extended to Higgs masses.

Original languageEnglish (US)
Pages (from-to)107-118
Number of pages12
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number1-2
StatePublished - Jul 11 2002

Bibliographical note

Funding Information:
We thank Toby Falk for many valuable discussions. The work of K.A.O. and Y.S. was supported partly by DOE grant DE-FG02-94ER-40823.

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