A New Gauge Mediation Theory

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dc.creatorAntoniadis, I.
dc.creatorBenakli, K.
dc.creatorDelgado, A.
dc.creatorQuiros, M.
dc.date2006-10-20
dc.date2007-03-22
dc.date.accessioned2026-07-07T11:58:53Z
dc.date.available2026-07-07T11:58:53Z
dc.descriptionWe propose a class of models with gauge mediation of supersymmetry breaking, inspired by simple brane constructions, where R-symmetry is very weakly broken. The gauge sector has an extended N=2 supersymmetry and the two electroweak Higgses form an N=2 hypermultiplet, while quarks and leptons remain in N=1 chiral multiplets. Supersymmetry is broken via the D-term expectation value of a secluded U(1) and it is transmitted to the Standard Model via gauge interactions of messengers in N=2 hypermultiplets: gauginos thus receive Dirac masses. The model has several distinct experimental signatures with respect to ordinary models of gauge or gravity mediation realizations of the Minimal Supersymmetric Standard Model (MSSM). First, it predicts extra states as a third chargino that can be observed at collider experiments. Second, the absence of a D-flat direction in the Higgs sector implies a lightest Higgs behaving exactly as the Standard Model one and thus a reduction of the `little' fine-tuning in the low tan(beta) region. This breaking of supersymmetry can be easily implemented in string theory models
dc.description23 pages, 3 figures, uses axodraw.sty. v2: a mistake in the radiative generation of the scalar masses is corrected. The main conclusions are unchanged
dc.identifierhttps://arxiv.org/abs/hep-ph/0610265
dc.identifierhttp://arxiv.org/abs/hep-ph/0610265
dc.identifierAdv.Stud.Theor.Phys.2:645-672,2008
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/206376
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Theory
dc.titleA New Gauge Mediation Theory
dc.typetext

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