2010/04/30 by Sourav K. Mandal, Mihoko M. Nojiri, Mihoko Nojiri +2 · 1 citation
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark matter #Fermion #Gauge (firearms) #Gluino #Hierarchy problem #Higgs boson #Large Hadron Collider #Lepton #Nuclear physics #Parameter space #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Quark #Standard Model (mathematical formulation) #Statistics #Supersymmetry #Yukawa potential #hep-ph
paper · pdf · doi:10.1007/jhep01(2011)131
published as JHEP 1101:131,2011 · Corresponds to published version
openalex publication_date 2011/01/01 · arxiv created 2011/01/27 · arxiv updated 2015/03/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The hierarchy of the Yukawa couplings is an outstanding problem of the standard model. We present a class of models in which the first and second generation fermions are SUSY partners of pseudo-Nambu-Goldstone bosons that parameterize a non-compact Kähler manifold, explaining the small values of these fermion masses relative to those of the third generation. We also provide an example of such a model. We find that various regions of the parameter space in this scenario can give the correct dark matter abundance, and that nearly all of these regions evade other phenomenological constraints. We show that for m_g ~ 700 GeV, model points from these regions can be easily distinguished from other mSUGRA points at the LHC with only 7 fb−1 of integrated luminosity at 14 TeV. The most striking signatures are a dearth of b- and τ-jets, a great number of multi-lepton events, and either an “inverted” slepton mass hierarchy, narrowed slepton mass hierarchy, or characteristic small-μ spectrum.