## Abstract

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 m_{t}=174.3GeV, we find that 114GeV<m_{h}<127GeV and a peak in the tanβ distribution ≃55. We observe two distinct peaks in the distribution of m_{h} values, corresponding to two different regions of the CMSSM parameter space. Values of m_{h}<119GeV correspond to small values of the gaugino mass m_{1/2} 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 g_{μ}-2. On the other hand, values of m _{h}>119GeV may correspond to much larger values of m_{1/2} and A_{0}, lying in rapid-annihilation funnels. The favoured ranges of m_{h} vary with m_{t}, the two peaks being more clearly separated for m_{t}=178GeV and merging for m_{t}=172.7GeV. If the g_{μ}-2 constraint is imposed, the mode of the m_{h} distribution is quite stable, being ∼117GeV for all the studied values of m_{t}.

Original language | English (US) |
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Pages (from-to) | 583-590 |

Number of pages | 8 |

Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |

Volume | 633 |

Issue number | 4-5 |

DOIs | |

State | Published - 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.