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arXiv · 1208.5328

The Higgs boson mass in a natural MSSM with nonuniversal gaugino masses at the GUT scale

Hiroyuki Abe·Junichiro Kawamura·Hajime Otsuka
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Abstract

We identify a parameter region where the mass of the lightest CP-even Higgs boson resides in $124.4-126.8$ GeV, and at the same time the degree of tuning a Higgsino-mass parameter (so-called $\mu$-parameter) is relaxed above 10% in the minimal supersymmetric standard model (MSSM) with soft supersymmetry breaking terms, by solving the full set of one-loop renormalization group equations numerically. It is found that certain nonuniversal values of gaugino-mass parameters at the so-called grand unification theory (GUT) scale $\sim 10^{16}$ GeV are important ingredients for the MSSM to predict, without a severe fine-tuning, the Higgs boson mass $\sim 125$ GeV indicated by recent observations at the Large Hadron Collider. We also show a typical superparticle spectrum in this parameter region.

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Hiroyuki Abe, Junichiro Kawamura, Hajime Otsuka. 2012-08-27. The Higgs boson mass in a natural MSSM with nonuniversal gaugino masses at the GUT scale. https://doi.org/10.1093/ptep/pts041

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