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Higgs boson mass from t-b-τ Yukawa unification

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Abstract

We employ the Yukawa coupling unification condition, y t = y b = y τ at M GUT, inspired by supersymmetric SO(10) models, to estimate the lightest Higgs boson mass as well as masses of the associated squarks and gluino. We employ non-universal soft masses, dictated by SO(10) symmetry, for the gauginos. Furthermore, the soft masses for the two scalar Higgs doublets are set equal at M GUT, and in some examples these are equal to the soft masses for scalars in the matter multiplets. For μ > 0, M 2  > 0, where M 2 denotes the SU(2) gaugino mass, essentially perfect t-b-τ Yukawa unification is possible, and it predicts a Higgs mass of 122-124 GeV with a theoretical uncertainty of about ±3 GeV. The corresponding gluino and the first two family squarks have masses ≳ 3 TeV. We present some LHC testable benchmark points which also show the presence of neutralino-stau coannihilation in this scenario. The well-known MSSM parameter tan β ≈ 47.

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  1. Bartol Research Institute, Department of Physics and Astronomy, University of Delaware, Newark, DE, 19716, U.S.A

    Ilia Gogoladze, Qaisar Shafi & Cem Salih Ün

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  1. Ilia Gogoladze
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  3. Cem Salih Ün
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Correspondence to Cem Salih Ün.

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ArXiv ePrint: 1112.2206

On leave of absence from: Andronikashvili Institute of Physics, 0177 Tbilisi, Georgia. (Ilia Gogoladze)

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Gogoladze, I., Shafi, Q. & Ün, C.S. Higgs boson mass from t-b-τ Yukawa unification. J. High Energ. Phys. 2012, 28 (2012). https://doi.org/10.1007/JHEP08(2012)028

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