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The Constrained NMSSM with right-handed neutrinos
This item is licensed under:Creative Commons Attribution 4.0 International
| Title: | The Constrained NMSSM with right-handed neutrinos |
| Authors: | Cerdeno, David G. Browse this author | | De Romeri, Valentina Browse this author | | Martin-Lozano, Victor Browse this author | | Olive, Keith A. Browse this author | | Seto, Osamu Browse this author →KAKEN DB |
| Issue Date: | 9-Apr-2018 |
| Publisher: | Springer |
| Journal Title: | The European physical journal. C |
| Volume: | 78 |
| Issue: | 4 |
| Start Page: | 290 |
| Publisher DOI: | 10.1140/epjc/s10052-018-5689-0 |
| Abstract: | In this article, we demonstrate that the inclusion of right-handed neutrino superfields in the Next-to-Minimal Supersymmetric Standard Model (NMSSM) makes it possible to impose universality conditions on the soft supersymmetry-breaking parameters at the Grand Unification scale, alleviating many of the problems of the so-called Constrained NMSSM. We have studied the renormalization group equations of this model, showing that right-handed neutrinos greatly contribute to driving the singlet Higgs mass-squared parameter negative, which makes it considerably easier to satisfy the conditions for radiative electroweak symmetry breaking. The new fields also lead to larger values of the Standard Model Higgs mass, thus making it easier to reproduce the measured value. As a consequence, all bounds from colliders and low-energy observables can be fulfilled in wide areas of the parameter space. However, the relic density in these regions is generally too high requiring some form of late entropy production to dilute the density of the lightest supersymmetric particle. |
| Rights: | https://creativecommons.org/licenses/by/4.0/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/70536 |
| Appears in Collections: | 国際連携機構 (Institute for International Collaboration) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 瀬戸 治
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