Polychromatic Grand Unification

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The possibility of achieving a gauge coupling grand unification by increasing the QCD degrees of freedom at higher energies is investigated. When confronted with precision low-energy data, the generic weak-mixing angle relation sin^2(theta_W) = N/2(N+1) requires N=7 colors at the GUT scale M_U ~ 10^17 GeV. With the exclusive addition of light Higgs doublets to the standard model particle content, such a unification may also occur if N=5 at M_U ~ 10^16 GeV.
4 pages, 2 figures

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High Energy Physics - Phenomenology, High Energy Physics - Theory

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http://salesiana.dossiersoluciones.com/handle/123456789/42469

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/hep-ph/0305092
 http://arxiv.org/abs/hep-ph/0305092

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arXiv