A Natural Solution to the MU Problem
| dc.creator | Casas, J. A. | |
| dc.creator | Munoz, C. | |
| dc.date | 1993-02-05 | |
| dc.date.accessioned | 2026-07-07T10:34:57Z | |
| dc.date.available | 2026-07-07T10:34:57Z | |
| dc.description | We propose a simple mechanism for solving the $μ$ problem in the context of minimal low--energy supergravity models. This is based on the appearance of non--renormalizable couplings in the superpotential. In particular, if $H_1H_2$ is an allowed operator by all the symmetries of the theory, it is natural to promote the usual renormalizable superpotential $W_o$ to $W_o+λW_o H_1H_2$, yielding an effective $μ$ parameter whose size is directly related to the gravitino mass once supersymmetry is broken (this result is maintained if $H_1H_2$ couples with different strengths to the various terms present in $W_o$). On the other hand, the $μ$ term must be absent from $W_o$, otherwise the natural scale for $μ$ would be $M_P$. Remarkably enough, this is entirely justified in the supergravity theories coming from superstrings, where mass terms for light fields are forbidden in the superpotential. We also analyse the $SU(2)\times U(1)$ breaking, finding that it takes place satisfactorily. Finally, we give a realistic example in which supersymmetry is broken by gaugino condensation, where the mechanism proposed for solving the $μ$ problem can be gracefully implemented. | |
| dc.description | 11 pages, CERN-TH.6764/92 | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9302227 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9302227 | |
| dc.identifier | Phys.Lett.B306:288-294,1993 | |
| dc.identifier | doi:10.1016/0370-2693(93)90081-R | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/179610 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | A Natural Solution to the MU Problem | |
| dc.type | text |