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arXiv · hep-ph/0302074

Robustness and Predictivity of 4 TeV Unification

Paul H. Frampton·Ryan M. Rohm·Tomo Takahashi
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Abstract

The stability of the predictions of two of the standard model parameters, $α_3(M_Z)$ and $\sin^2 θ(M_Z)$, in a $M_U \sim 4$ TeV unification model is examined. It is concluded that varying the unification scale between $M_U \simeq 2.5$ TeV and $M_U \simeq 5$ TeV leaves robust all predictions within reasonable bounds. Choosing $M_U = 3.8 \pm 0.4$ TeV gives, at lowest order, accurate predictions at $M_Z$. The impact of threshold effects on unification depends on the spectrum of states beyond the standard model.

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Paul H. Frampton, Ryan M. Rohm, Tomo Takahashi. 2003-06-21. Robustness and Predictivity of 4 TeV Unification. https://doi.org/10.1016/j.physletb.2003.07.024

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