تقرير
Toward the Natural and Realistic NMSSM with and without R-Parity
| العنوان: | Toward the Natural and Realistic NMSSM with and without R-Parity |
|---|---|
| المؤلفون: | Cheng, Taoli, Li, Jinmian, Li, Tianjun, Wan, Xia, Wang, You kai, Zhu, Shou-hua |
| سنة النشر: | 2012 |
| المجموعة: | High Energy Physics - Experiment High Energy Physics - Phenomenology |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology, High Energy Physics - Experiment |
| الوصف: | From the current ATLAS and CMS results on Higgs boson mass and decay rates, the NMSSM is obviously better than the MSSM. To explain the fine-tuning problems such as gauge hiearchy problem and strong CP problem in the SM, we point out that supersymmetry does not need to provide a dark matter candidate, i.e., R-parity can be violated. Thus, we consider three kinds of the NMSSM scenarios: in Scenarios I and II R-parity is conserved and the lightest neutralino relic density is respectively around and smaller than the observed value, while in Scenario III R-parity is violated. To fit all the experimental data, we consider the \chi^2 analyses, and find that the Higgs boson mass and decay rates can be explained very well in these Scenarios. Considering the small \chi^2 values and fine-tuning around 2-3.7% (or 1-2%), we obtain the viable parameter space with light (or relatively heavy) supersymmetric particle spectra only in Scenario III (or in Scenarios I and II). Because the singlino, Higgsinos, and light stop are relatively light in general, we can relax the LHC supersymmetry search constraints but the XENON100 experiment gives a strong constraint in Scenarios I and II. In all the viable parameter space, the anomalous magnetic moment of the muon (g_{\mu} - 2)/2 are generically small. With R-parity violation, we can increase (g_{\mu} - 2)/2, and avoid the contraints from the LHC supersymmetry searches and XENON100 experiment. Therefore, Scenario III with R-parity violation is more natural and realistic than Scenarios I and II. Comment: Revtex4, 25 pages, 4 figures, 6 tables, benchmark points and references added |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/1207.6392 |
| رقم الأكسشن: | edsarx.1207.6392 |
| قاعدة البيانات: | arXiv |
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