On the Higgs mass in the CMSSM

John Ellis, Dimitri Nanopoulos, Keith A. Olive, Yudi Santoso

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We estimate the mass of the lightest neutral Higgs boson h in the minimal supersymmetric extension of the Standard Model with universal soft supersymmetry-breaking masses (CMSSM), subject to the available accelerator and astrophysical constraints. For mt=174.3GeV, we find that 114GeV<mh<127GeV and a peak in the tanβ distribution ≃55. We observe two distinct peaks in the distribution of mh values, corresponding to two different regions of the CMSSM parameter space. Values of mh<119GeV correspond to small values of the gaugino mass m1/2 and the soft trilinear supersymmetry-breaking parameter A 0, lying along coannihilation strips, and most of the allowed parameter sets are consistent with a supersymmetric interpretation of the possibly discrepancy in gμ-2. On the other hand, values of m h>119GeV may correspond to much larger values of m1/2 and A0, lying in rapid-annihilation funnels. The favoured ranges of mh vary with mt, the two peaks being more clearly separated for mt=178GeV and merging for mt=172.7GeV. If the gμ-2 constraint is imposed, the mode of the mh distribution is quite stable, being ∼117GeV for all the studied values of mt.

Original languageEnglish (US)
Pages (from-to)583-590
Number of pages8
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number4-5
StatePublished - Feb 16 2006

Bibliographical note

Funding Information:
The work of D.V.N. was supported in part by DOE grant DE-FG03-95-ER-40917. The work of K.A.O. was supported in part by DOE grant DE–FG02–94ER–40823. The work of Y.S. was supported in part by the NSERC of Canada, and Y.S. thanks the Perimeter Institute for its hospitality.


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