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t − b − τ Yukawa unification for μ < 0 with a sub-TeV sparticle spectrum

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Abstract

We show compatibility with all known experimental constraints of t − b − τ Yukawa coupling unification in supersymmetric SU(4) c × SU(2) L × SU(2) R which has non-universal gaugino masses and the MSSM parameter μ < 0. In particular, the relic neutralino abundance satisfies the WMAP bounds and Δ(g − 2) μ is in good agreement with the observations. We identify benchmark points for the sparticle spectra which can be tested at the LHC, including those associated with gluino and stau coannihilation channels, mixed bino-Higgsino state and the A-funnel region. We also briefly discuss prospects for testing Yukawa unification with the ongoing and planned direct detection experiments.

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

    Ilia Gogoladze, Rizwan Khalid, Shabbar Raza & Qaisar Shafi

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  1. Ilia Gogoladze
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  2. Rizwan Khalid
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Correspondence to Ilia Gogoladze.

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

On study leave from: Centre for Advanced Mathematics & Physics of the National University of Sciences & Technology, H-12, Islamabad, Pakistan. (Rizwan Khalid)

On study leave from: Department of Physics, FUUAST, Islamabad, Pakistan. (Shabbar Raza)

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Gogoladze, I., Khalid, R., Raza, S. et al. t − b − τ Yukawa unification for μ < 0 with a sub-TeV sparticle spectrum. J. High Energ. Phys. 2010, 55 (2010). https://doi.org/10.1007/JHEP12(2010)055

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