Sparticle spectrum and phenomenology in split supersymmetry: some possibilities

Abstract

We investigate the split supersymmetry (SUSY) scenario recently proposed by Arkani-Hamed and Dimopoulos, where the scalars are heavy but the fermions are within the TeV range. We show that the sparticle spectrum in such a case crucially depends on the specific details of the mechanism underlying the SUSY breaking scheme, and the accelerator signals are also affected by it. In particular, we demonstrate in the context of a braneworld-inspired model, used as illustration in the original work, that a new fermion ${\psi }_X$, arising from the SUSY breaking sector, is shown to control low-energy phenomenology in several cases. Also, SUSY signals are characterised by the associated production of the light neutral Higgs. In an alternative scenario where the gauginos are assumed to propagate in the bulk, we find that gluinos can be heavy and short-lived, and the SUSY breaking scale can be free of cosmological constraints

arXiv comment8 pages,latex,revised and typos corrected, To appear in Physical Review D

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Cited by in corpus (23)

• Aspects of Split Supersymmetry
• Splitting Supersymmetry in String Theory
• Electric Dipole Moment in the Split Supersymmetry Models
• Hierarchically Split Supersymmetry with Fayet-Iliopoulos D-terms in String Theory
• The Higgs Boson Mass in Split Supersymmetry at Two-Loops
• Probing Split Supersymmetry with Cosmic Rays
• Split Supersymmetry from Anomalous U(1)
• Virtual effects of light gauginos and higgsinos: a precision electroweak analysis of split supersymmetry
• A Calculable Toy Model of the Landscape
• Neutrino Mass from R-parity Violation in Split Supersymmetry
• Solving the SUSY CP problem with flavor breaking F-terms
• Supersymmetry for Fermion Masses
• Structure of split supersymmetry and simple models
• Hunting long-lived gluinos at the Pierre Auger Observatory
• Distinguishing split supersymmetry in Higgs signals at the Large Hadron Collider
• Neutralino-nucleon interaction in the Split SUSY scenario of the Dark Matter
• Infrared fixed point of the top Yukawa coupling in split supersymmetry
• Vacuum Stability in Split Susy and Little Higgs Models
• Split Supersymmetry in Unified Models
• Split Supersymmetry in an Orbifold GUT
• Indian Contributions to LHC Theory
• Split supersymmetry and the role of a light fermion in a supergravity-based scenario
• Topics in Supergravity Phenomenology