Influence of Light and Heavy Thresholds on SUSY Unification

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dc.creatorBastero-Gil, M.
dc.creatorPerez-Mercader, J.
dc.date1993-10-04
dc.date.accessioned2026-07-07T12:03:08Z
dc.date.available2026-07-07T12:03:08Z
dc.descriptionIn this paper we study and compare susy unification using two different approaches in order to take into account the effect of light particle thresholds on the evolution of gauge couplings: the step--function approximation, on the one hand, and a mass dependent procedure, which gives a more accurate description of the dependence of the results on the masses, on the other. We also include the effect of heavy thresholds, when $SU(5)$ is chosen as the unifying group. We find that the mass--dependent procedure excludes scenarios where all susy masses are below $1\;TeV$, and favors a value of $α_3(m_Z)$ near its upper experimental bound, contrary to the results obtained with the step--function approximation. We underline the dependence of the results on the procedure chosen to deal with light thresholds.
dc.description18 pages,LAEFF-93/014,REVTEX-2.1, 5 figures not included, available upon request (include FAX number)#
dc.identifierhttps://arxiv.org/abs/hep-ph/9310215
dc.identifierhttp://arxiv.org/abs/hep-ph/9310215
dc.identifierPhys.Lett.B322:355-362,1994
dc.identifierdoi:10.1016/0370-2693(94)91165-7
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/207681
dc.subjectHigh Energy Physics - Phenomenology
dc.titleInfluence of Light and Heavy Thresholds on SUSY Unification
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