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Title: Correlating µ parameter and right-handed neutrino masses in N = 1 supergravity
Authors: Demir, Durmuş Ali
Farzan, Yasaman
Keywords: Supergravity models
Supersymmetry breaking
Supersymmetry phenomenology
Issue Date: Mar-2006
Publisher: Springer Verlag
Source: Demir, D. A., and Farzan, Y. (2006). Correlating μ parameter and right-handed neutrino masses in N = 1 supergravity. Journal of High Energy Physics, (3), 283-298. doi:10.1088/1126-6708/2006/03/010
Abstract: The minimal supersymmetric standard model, when extended to embed the seesaw mechanism, obtains two dimensionful parameters in its superpotential: the μ parameter and the right-handed neutrino mass MN. These mass parameters, belonging to the supersymmetric sector of the theory, pose serious naturalness problems as their scales are left completely undetermined. In fact, for correct phenomenology, μ must be stabilized at the electroweak scale while MN lies at an intermediate scale. In this work we construct an explicit model of the hidden sector of N ≤ 1 supergravity for inducing both μ and MN at their right scales. The model we build utilizes lepton number conservation and continuous R invariance as two fundamental global symmetries to forbid bare μ and MN appearing in the superpotential, and induces them at phenomenologically desired scales via spontaneous breakdown of the global symmetries and the supergravity. We discuss briefly various phenomenological implications of the model.
ISSN: 1029-8479
Appears in Collections:Physics / Fizik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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