Abstract
Abstract
By extending a previously proposed conformal gauge mediation model, we construct a gauge-mediated SUSY breaking (GMSB) model where a SUSY-breaking scale, a messenger mass, the μ-parameter and the gravitino mass in a minimal supersymmetric (SUSY) Standard Model (MSSM) are all explained by a single mass scale, a R-symmetry breaking scale. We focus on a low scale SUSY-breaking scenario with the gravitino mass m3/2 = $$ \mathcal{O}(1)\mathrm{eV} $$
O
1
eV
, which is free from the cosmological gravitino problem and relaxes the fine-tuning of the cosmological constant. Both the messenger and SUSY-breaking sectors are subject to a hidden strong dynamics with the conformality above the messenger mass threshold (and hence the name of the model “strongly interacting conformal gauge mediation”). In our model, the Higgs B-term is suppressed and a large tan β is predicted, resulting in the relatively light second CP-even Higgs and the CP-odd Higgs with a sizable production cross section. These Higgs bosons can be tested at future LHC experiments.
Publisher
Springer Science and Business Media LLC
Subject
Nuclear and High Energy Physics
Reference49 articles.
1. M. Misiak, S. Pokorski and J. Rosiek, Supersymmetry and FCNC effects, Adv. Ser. Direct. High Energy Phys. 15 (1998) 795 [hep-ph/9703442] [INSPIRE].
2. M. Dine, Supersymmetry phenomenology (with a broad brush), in Theoretical Advanced Study Institute in Elementary Particle Physics (TASI 96): Fields, Strings, and Duality, (1996) [hep-ph/9612389] [INSPIRE].
3. F. Gabbiani, E. Gabrielli, A. Masiero and L. Silvestrini, A Complete analysis of FCNC and CP constraints in general SUSY extensions of the standard model, Nucl. Phys. B 477 (1996) 321 [hep-ph/9604387] [INSPIRE].
4. M. Dine and A. E. Nelson, Dynamical supersymmetry breaking at low-energies, Phys. Rev. D 48 (1993) 1277 [hep-ph/9303230] [INSPIRE].
5. M. Dine, A. E. Nelson and Y. Shirman, Low-energy dynamical supersymmetry breaking simplified, Phys. Rev. D 51 (1995) 1362 [hep-ph/9408384] [INSPIRE].